IInnddeexx

Welcome 2

Committees 4

Program 5

Sponsors and Exhibitors 9

Author Index 10

Presentations

Orals 14

Posters 43

AOFSRR Shuttle Bus 102

1

2

WWeellccoommee Welcome to the 4th AOFSRR workshop in Shanghai, China! It is our honor to host the fourth Asia Oceania Forum on Synchrotron Radiation Research. The workshop will be held along with the first Users Meeting of Shanghai Synchrotron Radiation Facility, which is to be held on November 28 and 29; therefore, you are also welcome to attend the users meeting. We would like to express our heartfelt appreciation to the council members and committees of AOFSRR, and all the sponsors for helping us to make a successful workshop. For this workshop, we will have the delegates from Japan, Korea, Australia, Singapore Taiwan Hongkong, India, Thailand, Malaysia, New Zealand, Vietnam and mainland China. We believe that it is a great opportunity for participants to exchange the latest developments, to discuss future directions for

synchrotron radiation research and to broaden the collaborations among facilities and regions. It is also a special opportunity for Shanghai Synchrotron Radiation Facility, which has just started its operation this year. The success of SSRF construction itself is a good example of international cooperation. We believe that the future of SSRF will still be benefited from the collaboration and we hope to contribute to the regional collaboration as well. We feel happy that you have chosen to join us for the workshop. We wish that your experiences at 4th AOFSRR will be beneficial to your research and wish you a very pleasant stay in Shanghai. Professor Hongjie Xu Director, Shanghai Synchrotron Radiation Facility

WWeellccoommee On behalf of the Council of AOFSRR, I would like to welcome all of you to the 2009 Workshop in Shanghai. As we all have witnessed, following the fast economic growth in the region in the last 20 years, many synchrotrons, ranging from first- to fourth-generation machines, have been built in the Asia-Oceania region. This makes synchrotron facilities among the most visible major scientific developments in the region. The AOFSRR was first established in November 2006 at KEK with eight members, each having synchrotron facilities Australia, China, India, Korea, Japan, Singapore, Taiwan, and Thailand. The charge of the organization is to

promote collaboration between the facilities and user communities in the Asia-Oceania region. At this years workshop, we are especially delighted to welcome New Zealand, Malaysia, and Vietnam to join as associate members. Through the workshop, we hope to achieve increase in inter-facility cooperation and scientific collaboration. We welcome you to Shanghai and wish for a very successful two-day meeting. Keng S. Liang Council President, AOFSRR

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Council committee President: Keng S. Liang Secretary-General:

Masaki Takata Vice president:

Moonhor Ree Past president:

Yoshiyuki Amemiya Treasurer: Robert Lamb Secretary-Treasure:

Richard Garrett Special Advisor of President:

Osamu Shimomura Member: Hongjie Xu Member: V.C.Sahni Member: Weerapong Pairswan Member: Herbert O. Moser Member: Masaharu Oshima

Organizing committee Chair: Hongjie Xu Secretaty: Renzhong Tai Member: Keng S. Liang Member: Moonhor Ree Member: Robert Lamb Member: Masaharu Oshima Member: V.C.Sahni Member: Weerapong Pairswan Member: Herber O. Moser Member: Xiaoming Jiang Member: Ziyu Wu Member: Masaki Takata Member: Richard Garrett Member: Osamu Shimomura Program committee Chair: Jianhua He Member: Keng S. Liang Member: Yaw-Wen Yang Member: Kyung Jin Kim Member: Jung Nam Hwang Member: Kilwon Cho Member: Masaki Takata Member: Ian Gentle Member: Caozheng Diao Member: Yangchao Tian Member: Nobuhiro Kosugi Member: Soichi Wakatsuki Member: Tiandou Hu

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The 4th AOFSRR Program (Nov. 30 Dec. 1, 2009)

NOV. 30, 2009

OPENING

9:00-9:40

Welcome Address

Chair: Hongjie Xu

The Vice President, Chinese Academy of Sciences, China

The Vice President, Prof. Wenqing Shen, National Natural Science Foundation of China (NSFC), China

The Vice director, Mr. Qianghua Shi, Science and Technology Commission of Shanghai Municipality, China

Mr. Hiroki Takaya Director, the office of Synchrotron Radiation Research, Ministry of Education, Culture, Sports, Science & Technology (MEXT), Japan

Prof. Zhentang Zhao Deputy Director of Shanghai Synchrotron Radiation Facility Director of Shanghai Institute of Applied Physics

9:40-12:20

I. Recent Progress and Future Plan of SR Activitiesin AO Region-I

Chair: Moonhor Ree

9:40-10:00 Overview of AOF Activities K. Liang, NSRRC

10:00-10:20 Current Status of SSRF Hongjie Xu, SINAP,CAS

10:20-10:40 Present Status of BSRF Yuhui Dong, IHEP, CAS 10:40-11:20 Group photo and coffee break

Chair: Jianhua He

11:20-11:40 NSRL and its applications facing the quantum control age Ziyu Wu, NSRL

11:40-12:00 Shanghai SXFEL Project Zhentang Zhao, SINAP, CAS

12:00-12:20 The Science Plan of TPS Di-Jing Huang, NSRRC

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12:20-14:00 Lunch & Poster Session

Scientific Poster; Facility Poster

14:00-16:50

II. Recent Progress in SR-based Science and Techniques-I

Chair: Di-Jing Huang

14:00-14:30 IR and THz Sciences at UVSOR-II Shinichi Kimura, UVSOR, Japan

14:30-15:00 Application of VUV Synchrotron Radiation in Chemical Dynamics Research Xueming Yang, Dalian Institute of Chemical Physics, CAS

15:00-15:30 Anisotropic electrical conductivity of PdCoO2 studied by angle-resolved photoemission spectroscopy Hyeong-Do Kim, PAL, Korea

15:30-15:50 Coffee Break

Chair: Renzhong Tai

15:50-16:20 Electronic structure of unusual charge and spin density waves Donglai Feng, Fudan University, China

16:20-16:50 Structure and Ferroelectric Behavior of BiFeO3 (001) Thin Film Ping Yang , Singapore Light Source, Singapore

16:50-17:50

III. Recent Progress and Future Plan of SR Facilities

in AO Region-II

Chair: Osamu Shimomura

16:50-17:10 XFEL project at SPring-8 Takashi Tanaka, RIKEN SPring-8 Center, Japan

17:10-17:30 Status of PLS-II Upgrade and Korean XFEL Kyung-Ryul Kim, PAL,Korea

17:30-17:50 Present Status of the Siam Photon Laboratory Prayoon Songsiriritthigul, SLRI ,Thailand

18:00 Banquet

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Dec. 1st

8:30-11:50

IV. Recent Progress in SR-based Science and Techniques-II

Chair: Yoshiyuki Amemiya

8:30-9:00 Synchrotron X-rays in quest of new horizons in the protein universe Soichi Wakatsuki ,PF, Japan

9:00-9:30 Structure and Mechanism of an Amino Acid Antiporter Yigong Shi, Qinghua University, China

9:30-10:00 The development of X-ray microscopy for biomedical applications Yeukuang Hwu, NSRRC

10:00-10:20 Coffee Break

Chair: Ian Gentle

10:20-10:50

The advanced SR structural materials science utilizing novel measuring and data analysis technique. - From nano science to pharmaceutical chemistry Makoto Sakata, Japan Science & Technology Agency

10:50-11:20 Megapixels per hour: fast fluorescence imaging at the Australian Synchrotron David Paterson, Australian Synchrotron

11:20-11:50 Fast switching of circular polarization using APPLE-II type undulators Kenta AmemiyaPFJapan

11:50-12:50 A Tour of SSRF

12:50-14:30 Lunch & Poster Session Scientific Poster, Facility Poster

14:30-15:30

V. Promotion of the SR Activities in AO Region-I

Chair: Richard Garrett The Activities in the Associate Members 1) New Zealand (15min.)

Richard Haverkamp, Massey University, New Zealand 2) Malaysia (15min.)

Swee Ping Chia, University of Malaya 3) Vietnam (15min.)

Tran Duc Thiep, Vietnam Academy of Science and Technology

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4) Discussion for alliance between the members (15min.) 15:30-15:50 Coffee Break

15:50-16:40

VI. Promotion of the SR Activities in AO Region-II

Chair: K. Liang

15:50-16:10 Inter-facility Cooperation. Richard Garrett, ANSTO, Australia

16:10-16:40

Cheiron School Report 1) Cheiron School 2009 (20min.)

Masaki Takata, JASRI/SPring-8, Japan 2) Students Reports (10min.)

Jingyuan Ma, SSRF, China Somchai Tancharakorn, SLRI, Thailand

16:40-17:30

Remarks & Closing

Chair: Masaki Takata

16:40-17:00 Council Report & Discussion K. Liang, NSRRC

17:00-17:15 AOFSRR2010 Moonhor Ree, POSTECH, Korea

17:15-17:30 Closing Remarks Hongjie Xu, SINAP, CAS

17:40 Back to hotel

Dec. 2rd

Excursion to Suzhou

Detailed information is available on the webpage:

http://www.sinap.ac.cn/aof2009/

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AAuutthhoorr IInnddeexx Ahn, Byungcheol 54, 56, 57, 58, 59, 60, 61, 62, 63, 64, 66, 67, 71 Amemiya, Kenta 20 Bao, Liangman 74 Bian, Fenggang 53 Bian, Feng-Gang 37 Bottjer, David J. 72 Byun, Gwang-su 66 Cai, Zhonghou 70 Chang, Chien-Hung 45 Chang, Shih-Lin 45 Chang, Taihyun 62 Chen, Hsin-Lung 45 Chen, J. M. 55 Chen, Jiahua 48, 38 Chen, Jun-Yuan 72 Chen, Min 38, 48 Chen, Ming 43 Chen, Ming-Chou 69 Chen, Mingzhi 52 Chen, Rongchang 49 Chen, S. A. 55 Cheng, Yung-Chiuan 69 Chia, Swee-Ping 24 Cho, En-Jin 9 Choi, Junman 54, 56, 57, 58, 59, 60, 62, 63, 64, 66, 67, 71 Chou, T. L. 55 Chuang, W. T. 55 Chun, M. H. 27 Davidson, Eric H. 72 Deng, Biao 49 Dong, Yuhui 3 Du, Guohao 49, 73 Du, Yonghua 11 Duangnil, S. 14

Fan, Liang-Jen 69 Feng, Chao 32 Feng, Dong-Lai 10 Feng, Guangyao 34 Fu, Yuan 36, 51

Gao, Mei 47 Gao, Xiang 16 Garrett, Richard F. 21 Gong, Pei-rong 41, 42 Gu, Songqi 51 Guo, Zhi 48 Hadfield, Michael G. 72 Haverkamp, Richard 23 Hayakawa, Teruaki 54 He, Jianhua 52 He, Qing 47 Heo, Kyuyoung 58, 62, 64, 71 Hirai, Tomoyasu 54 Hiraoka, N. 55 Howarda, D. L. 19 Hsw, S. A. 55 Hu, Chun 39, 41 Hua, Wei 52 Huai, Ping 68 Huang, Chi-Yi 45 Huang, Di-Jing 6 Huang, Sheng 52 Huang, Wei 75 Huang, Yu-Shan 45 Huang, Yuying 51, 75 Hwang, Ilmoon 30 Hwu, Yeukuang 17, 70 Ishii, H. 55 Jeong, Jinhwan 9 Jeong, Jinwon 9 Jiang, Zheng 51, 75 Jin, Kyeong 71 Jin, Kyeong Sik 58, 62, 67 Jin, Sangwoo 54, 56, 57, 58, 59, 60, 61, 62, 63, 64, 66, 67, 71 Jongea, M. D. de 19 Jung, Jungwoon 54, 56, 57, 58, 59, 60, 61, 62, 63, 64, 66, 67, 71 Jung, Sungmin 54, 56, 57, 58, 59, 60, 62, 63, 64, 66, 67, 71 Kakizaki, Akito 46 Kawata, Hiroshi 26

Ke, Ming 40 Kim, D.T. 29 Kim, Dong Min 54, 56, 57, 58, 59, 60, 61, 62, 63, 64, 66, 67, 71 Kim, Gahee 64, 71 Kim, Hyeong-Do 9 Kim, J. M. 28 Kim, Jae-Hong 67 Kim, Jehan 62 Kim, Jin Chul 54, 56, 57, 58, 59, 60, 61, 62, 63, 64, 66, 67, 71 Kim, K. R. 27, 28, 29, 31 Kim, Kwang-Woo 62 Kim, Kyoo 9 Kim, Kyung-Ryul 13 Kim, Kyungtae 54, 56, 57, 58, 59, 60, 61, 63, 64, 66, 67, 71 Kim, Mihee 54, 56, 57, 58, 59, 60, 61, 62, 63, 64, 66, 67, 71 Kim, SikHyun Chul 71 Kim, Sung Baek 9 Kimura, Shin-ichi 7 Kirkhamb, R. 19 Klysubun, P. 14 Ko, Yong-Gi 54, 56, 57, 58, 59, 60, 61, 62, 63, 64, 66, 67, 71 Kwon, Wonsang 54, 56, 57, 58, 59, 60, 61, 62, 63, 64, 66, 67, 71 Lai, Barry 70 Lee, Chih-Hao 45 Lee, E.H. 2829 Lee, J. F. 55 Lee, J. M. 55 Lee, J. W. 27282931 Lee, Taek Joon 54565758596061626364666771 Li, A.G. 50 Li, Gang 72 Li, J. 50 Li, Jun 65 Li, Tingju 65 Li, weimin 34 Li, Xiaochun 16 Li, Xiuhong 53

Li, Yan 7074 Li, Yulan 70 LI, Zhong 39, 4147 Liang, Feng 70 Liang, Keng S. 1 Lin, C. M. 55 Lin, Jun 74 Lin, Tsang-Lang 45 Liu, Huajun 11 Liu, Ke 52 Liu, Ping 39 Liu, Shi-Lei 37 Liu, Wei 74 Liu, Yi 53 Lu, Feiran 16 Lu, Jie 33 Lu, K. T. 55 LU, Qipeng 38 Luo, Hongxin35 Ma, Jingyuan 25A51 Maeda, Rina 54 Mao, C.W. 50 Mi, Qingru 39 Min, B. I. 9 Nam, N. S. 31 Noh, Han-Jin 9 Okajima, Toshihiro 44 Oshima, Masaharu 46 Ozaki, Yukihiro 58 Pairsuwan, W. 14 Park, B.R. 27 Park, H. G. 31 Park, Joon Kyu 67 Park, S. J. 27282931 Park, Samdae 54565758596061626364666771 Paterson, D. 19

Peng, Wen-Yan 45 Peng, Zhongqi 38 Qing, Xiang-yun 41 Ree, Moonhor 5456575859606162636465666771 Rho, Yecheol 545657585960616263646771 Ryanb, C. G. 19

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Sakata, Makoto 18 Sato, Harumi 58 Shen, Da-Wei 10 Sheu, H.-S. 55 Shi, Yigong 16 Siddonsc, D. P. 19 Songsiriritthigul, P. 14 Sun, Bo 52 Sun, Peijian 68 Tafforeau, Paul 72 Tai, Renzhong 3848 Tan, Mingguang 70 Tanaka, Takashi 12 Tancharakorn, Somchai 25B Tang, Lin 52 Tang, Mau-Tsu 45 Thiep, Tran Duc 22 Tong, Yajun 49 Tsuei, K. D. 55 Wakatsuki, Soichi 15 Wang, Chia-Hsin 69 Wang, Hongfei 33, 50 Wang, Jiawei 16 Wang, Jie 355340 Wang, John 11 Wang, Lin 34 Wang, Mouhua 73 Wang, Na-Xiu 37 Wang, Qisheng 52 Wang, Sisheng 47 Wang, Tongmin 65 Wang, Yong 3848 Wang, Yu 52 Wang, Yuzhu 53 Wei, Xiangjun 51 Wei, Zhi-hua 41 Wen, Wen 47 Wu, Guanyuan 43 Wu, Guozhong 7375 Wu, Yanqing 3848 Wu, Yingfeng 39 Wu, Ziyu 434 Xia, Shaojian 51 Xian, Ding-Chang 72

Xiao, Tiqiao 3565, 73 Xiao, Xianghui 70 Xiao, Tiqiao 49 Xie, Honglan 49, 73 Xing, Zhe 73 Xu, Chunyan 52 Xu, Gongliang 34 Xu, Hongjie 24849515375 Xu, Jian 70

Xu, Jingjing 65 Xu, Zhong-Min 37 Xue, Bing 68 Xue, Song 363840, 48 Xue, Yanling 49 Yan, Chonghuai 70 Yan, F. 50 Yan, Rui 48 Yan, S. 50 Yang, K. 50 Yang, Le-Xian 10 Yang, P. 11 Yang, Xueming 8 Yang, Yaw-Wen 69 Yoon, J. C. 31 Yoon, Jinhwan 54586271 Yu, Chenghao 40 Yu, Feng 52 Yu, Xiaohan 50, 51 Zhang, Chuanfu 70 Zhang, Guilin 70 Zhang, Min 43 Zhang, Shuo 51 Zhang, Wei 3368 Zhang, Yan 10 Zhang, Zhao-hong 39, 41 Zhang, shancai 34 Zhao, Z. T. 5 Zhao, Zhentang 232 Zhen, Xiangjun 48 Zheng, Lifang 39 Zhou, Jian-ying 41 Zhou, Lijun 16 Zhou, Qiaogen 33 Zhou, Xiang 52

12

13

Zhou, Xingtai 47 Zhu, Wanqian 3649 Zhu, Z.X. 42 Zhu, Zhiyuan 68 Zou, Yang 5175

14

Orals

01 4th AOFSRR

Overview of AOF Activities

Keng S. Liang

NSRRC, Hsinchu, Taiwan

In view of the increased activities of synchrotron facility developments and synchrotron

radiation research in the Asia Oceania region, the Asia Oceania Forum of Synchrotron

Radiation Research was established in November 2006 at KEK under the initiation of

Japanese Society for Synchrotron Radiation Research (JASRR). Currently the AOFSRR

includes eight regional members with each having its own synchrotron facilities in operation

(Australia, China, India, Korea, Japan, Singapore, Taiwan, and Thailand) and three associate

members (New Zealand, Malaysia, and Vietnam). The AOFSRR has sponsored two major

annual events: the workshop and the Cheiron School. The first workshop was held in Tsukuba

in November 2006, followed by the second at Hsinchu in 2007, the third at Melbourne in

2008, and the 4th one of this meeting. The Cheiron School, starting with first one in

September 2007, has been held at SPring-8 each year for 10 days since. Each School was

attended by 60 to 70 students and young researchers from the region. Both the annual

workshop and the Cheiron School serve the purpose in promoting networking of synchrotron

researchers, the collaboration among synchrotron facilities, and the nurturing of young

generation of synchrotron users through out the region. In this talk, I will give a short history

and an overview of the AOFSRR activities of the last few years.

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02 4th AOFSRR

Current Status of Shanghai Synchrotron Radiation Facility

Hongjie Xu and Zhentang Zhao Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese

Academy of Sciences, Shanghai 201800, China

The Shanghai Synchrotron Radiation Facility (SSRF) is a third generation light source of

3.5GeV electron energy, aimed at producing very brilliant X-ray and soft X-ray beams to

facilitate the researches in life science, material science, earth and environmental sciences,

and many other fields. The construction of SSRF started in December of 2004 and was

completed by the end of April 2009. During the commissioning stage, the technical

parameters of accelerators and beamlines were measured systematically with the conclusion

that all the design specifications have been met. The test user operation of SSRF started in

May of 2009 and more than 2000 hours user beamtime has been scheduled for this year.

At present, seven beamlines have been built on SSRF as the phase I beamlines and are all in

operation now:

Macromolecular Crystallography Beamline

X-ray Diffraction Beamline

X-ray Absorption Fine Structure Beamline

Hard X-ray Micro-focusing Beamline

X-ray Imaging and Biomedical Applications Beamline

Soft X-ray Spectromicroscopy Beamline

Small Angle X-ray Scattering Beamline

Two calls for user proposals were made in this year and about 570 proposals were received.

Hundreds of users have come to SSRF for experiments and lots of interesting results are

expected.

16

In this talk, an overview of the construction and the commissioning of SSRF will be

introduced. Some representative experimental results obtained since the operation will be

shown and the future beamline programs will be introduced as well.

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03 4th AOFSRR

Present Status of BSRF Yuhui Dong

Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences

19B Yuquan Road, Beijing 100049, China Email: dongyh@ihep.ac.cn

BSRF was in commissioning from 1991. After about 20 years of development, there are

14 beamlines and end-stations. Although the accelerator of BSRF is a parasitic machine,

BSRF still provide 2000 hours of beamtime; arrange 300 proposals and 1000 user for

expeiments per year.

The beamlines of BSRF cover the fields of condensed matter physics, chemistry, biology,

environment, geology, and materials sciences. Due to the huge numbers of research teams

around Beijing, many important and interesting researches archive great success in BSRF.

Due to the unexpectedly high speed of the growth in the numbers of research teams and

the funding from government in China in the recent years, BSRF will still keep the position

for supporting the frontier research of the scientists in China, especially around Beijing. Now

BSRF plans to improve the commissioning in order to provide more support for the research

teams around Beijing. These improvements include parasitic mode commissioning for more

beamtime, in situ experimental environment for real time studies, new experimental

techniques for frontier research. We believe BSRF, and also the other two synchrotron

radiation facilities in China, SSRF and NSRL, will provide better supporting for the scientific

research of all of the groups in China in the future.

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04 4th AOFSRR

NSRL and its Application -- Facing the Quantum Age Ziyu Wu

National Synchrotron Radiation Laboratory

University of Science and Technology of China

Email: wuzy@ustc.edu.cn

As the first dedicated VUV synchrotron radiation facility in China, the construction of the

National Synchrotron Radiation Laboratory (NSRL) started in 1984 and the Phase II Project

was carried out in the period 1999-2004. It recently celebrated its 20 anniversaries after the

first synchrotron radiation light observation and since then it hosted more then 2000 users.

NSRL is based on a 200 MeV Linac that is the injector, a transport line, an 800 MeV

electron storage ring hosting 14 beamlines and end-stations covering a wide energy range

from the infrared through the x-ray region. The domestic community performed hundreds of

experiments in many disciplines ranging from physics to chemistry, biology, life sciences,

material sciences, surface sciences, metrology, medicine, microscopy and imaging, detectors,

instrumentation, etc..

Nowadays, to face up new experimental demands and the coming of the quantum age,

NSRL is planning in the next three years an important upgrade project. After that, new

research opportunities for the investigations of quantum systems and in modern researches

regarding cell imaging, surface interactions and interfaces, combustion processes, energy and

environmental science, water, as well as the generation of coherent sources in the THz and IR

domain will be available thanks to the designed high brilliance and low emittance.

As a national user-oriented large-scale scientific infrastructure supported by the National

science foundations, NSRL enthusiastically welcome scientists from all disciplines interested

to carry out their state-of-the-art researches in our facility.

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05 4th AOFSRR

Shanghai Soft X-Ray Free Electron Laser Test Facility

Z. T. Zhao for the SXFEL Project Team

Shanghai Institute of Applied Physics, Chinese Academy of Sciences

As a development step towards constructing a hard X-ray FEL in China, a soft X-ray FEL

test facility (SXFEL) was proposed and will be constructed in Shanghai by a joint team of

Institute of High Energy Physics, Tsinghua University and Shanghai Institute of Applied

Physics. This test facility, based on an 840MeV S-band electron linear accelerator, aims at

generating 9nm FEL radiation with two-stage cascaded HGHG scheme. This presentation

reports the preliminary design of this Chinese soft X-ray test facility and the R&D progress of

the key FEL technologies in the SDUV-FEL test bench.

20

06 4th AOFSRR

The Science Plan of TPS Di-Jing Huang, NSRRC

21

07 4th AOFSRR

IR and THz Sciences at UVSOR-II

Shin-ichi Kimura UVSOR Facility, Institute for Molecular Science, Okazaki 444-8585, Japan

Synchrotron radiation is a powerful light source not only in the x-ray and VUV regions but

also in the IR and THz regions because of the high brilliance. At UVSOR, the IR/THz

beamline firstly dedicated to users in the world has been constructed about 25 years ago.

Recently, the IR/THz beamline was reconstructed and the acceptance angle was expanded to

215 (H) 90 (V) mrad2 by using a three-dimensional magic mirror, which is a perfect

focusing mirror for a circular trajectory [1]. Due to the improvement, unexplored IR and THz

spectroscopies, for instance THz spectroscopy under extreme conditions, became available. In

addition, intense coherent THz radiation and VUV coherent harmonic generation produced by

the interaction between the electron beam in the storage ring and a pulse laser are studied at

UVSOR-II. Since these lights originate from the same electron bunch, these lights are

perfectly synchronized with each other. The property is useful for pump probe experiments.

Then we plan to perform a THz pump PES probe experiment using the coherent THz and

VUV lights. In this talk, we discuss sciences using the present IR/THz beamline and prospects

using the intense coherent THz radiation.

References:

[1] S. Kimura, E. Nakamura, T. Nishi, Y. Sakurai, K. Hayashi, J. Yamazaki, and M. Katoh,

Infrared Phys. Tech. 49, 147 (2006).

22

08 4th AOFSRR

Application of VUV Synchrotron Radiation in Chemical

Dynamics Research

Xueming Yang State Key Laboratory of Molecular Reaction Dynamics

Dalian Institute of Chemical Physics, Chinese Academy of Sciences

In this talk, a brief overview of the VUV synchrotron applications in the chemical

dynamics research will be provided. Strong and tunable VUV light sources are very useful

in the detection of radical and exotic species in chemical processes. In the last ten years, we

have been involved in using VUV synchrotron radiation to investigate the dynamics of

molecular photodissociation and crossed beams reactions. New experimental tools have

been developed in this area. In this work, I will give a few examples to show the advantages

of using VUV light source to investigate the fundamental mechanisms of chemical reactions.

23

09 4th AOFSRR

Anisotropic electrical conductivity of PdCoO2 studied by

angle-resolved photoemission spectroscopy

Hyeong-Do Kim,1 Han-Jin Noh,2 Jinwon Jeong,2 Jinhwan Jeong,2

En-Jin Cho,2 Sung Baek Kim,2 Kyoo Kim,4 and B. I. Min4 1Pohang Accelerator Laboratory, POSTECH, Pohang 790-784, Korea

2Department of Physics, Chonnam National University, Gwangju 500-757, Korea 3Laboratory of Pohang Emergent Materials and Department of Physics, POSTECH,

Pohang 790-784, Korea 4Department of Physics, POSTECH, Pohang 790-784, Korea

An explicit connection between the electronic structure and the anisotropic high

conductivity of delafossite-type PdCoO2 has been established by angle-resolved

photoemission spectroscopy (ARPES), core-level x-ray photoemission spectroscopy, and

x-ray absorption spectroscopy. The ARPES spectra show that a large hexagonal electronlike

Fermi surface (FS) consists of very dispersive Pd 4d states. The carrier velocity and lifetime

are determined from the ARPES data, and the conductivity is calculated by a solution of the

Boltzmann equation, which demonstrates that the high anisotropic conductivity originates

from the high carrier velocity, the large two-dimensional FS, and the long lifetime of the

carriers.

24

10 4th AOFSRR

Electronic structure of unusual charge and spin density waves

Dong-Lai Feng, Yan Zhang, Le-Xian Yang, Da-Wei Shen

Department of Physics and Laboratory of Advanced Materials, Fudan University, Shanghai, 200433, P. R. China

Charge and spin density waves (CDW and SDW) are two basic forms of order in solids.

In our study of various density wave systems, we found their microscopic mechanisms are

often unconventional. In this talk I will give several examples about the rich and anomalous

density waves in complex materials.

The transition metal dichalcogenides with 2H structure is the first system in which two

dimensional CDW was discovered. However it had puzzled people for nearly 30 years that it

cannot be explained by either the Fermi surface nesting scenario, or the saddle point scenario.

We measured the electronic structure of 2H-NaxTaS2 [1] and NbSe2 [2] and proved that the

CDW is not related to the Fermi surface but to the Fermi patch region all over the Brillion

zone. This new mechanism could explain the charge instability in many strongly coupled

systems.

Similar to the cuprate, both superconducting and magnetically ordered phases appear in the

phase diagram of the newly discovered iron pnictides. We find that the itinerant SDW order in

materials such as BaFe2As2 the SDW is caused by the band splitting [3], instead of Fermi

surface nesting; moreover the coexistence of superconductivity and SDW is discovered in

Sr0.82K0.18Fe2As2 [4].

References:

[1] D. W. Shen et al. Phys. Rev. Lett. 99, 216404 (2007),

[2] D. W. Shen et al. Phys. Rev. Lett. 101,226406 (2008),

[3] L. X. Yang et al. Phys. Rev. Lett. 102, 107002 (2009),

[4] Y. Zhang et al. Phys. Rev. Lett.102 (2009) 127003.

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11 4th AOFSRR

Structure and Ferroelectric Behavior of BiFeO3 (001) Thin Film

P. Yang Singapore Synchrotron Light Source (SSLS), National University of Singapore

5 Research Link, Singapore 117603

LIU Huajun and John Wang Department of Materials Science and Engineering, National University of Singapore

Singapore 117574

DU Yonghua Institute of Chemical and Engineering Sciences (ICES)

1 Pesek Road, Jurong Island, Singapore 627833

Bismuth ferrite (BiFeO3) is perhaps the only material that is both magnetic and strong

ferroelectric at room temperature. It has significant impact in the field of multiferroic

materials, which simultaneously shows ferroelectricity, ferromagnetism, and ferroelasticity,

with promising applications in data storage, the new generation of sensors and actuators, and

spintronic devices. Indeed, hundreds of papers have been published in this area in recent years

[1]. Especially, the mechanism of coexistence of ferroelectricity and magnetism has drawn

great attention from researchers, as it is different from traditional ferroelectric materials and it

will also show indications to design new multiferroic materials. Structure-correlated origin or

mechanism of ferro-electricity in Bismuth Ferrite (BiFeO3, BFO) films is studied using

high-resolution X-ray diffractometry (HR-XRD) and XAFS (X-ray Absorption Fine

Structure).

A twinning rotation structure is revealed by reciprocal space mappings (RSMs) obtained

from synchrotron radiation HR-XRD [2] for the epitaxial BFO thin film that was grown on

(001) SrTiO3 substrate. The lattice strain is not fully relaxed at a film thickness of 720 nm.

The structure is indexed as a monoclinic with lattice parameters a = 5.610 , b = 5.529 , c =

4.031 and = 89.34. The twinning rotation leads to an enhanced remanent polarization

(2Pr = 163.5C/cm2, 2Ec = 509.5 kV/cm) and greatly reduced leakage current density of 1.2

26

10-6 A/cm2 at 100 kV/cm [3].

XAFS offers the coordination info for local structures around the cations Bi and Fe.

Possible correlations between the microscopic distortion in crystal structure and macroscopic

remanent polarization would be established.

Besides, structure change on growth condition is outlined.

Based on the understanding of the ferroelectricity and magnetism in BFO, we would be

able to design a structure which could simultaneously enhance both of ferro-electricity and a

strong magneto-electric coupling.

References:

G. Catalan and J.F. Scott, Advanced Materials, 21, 2463, (2009)

P. Yang and H.O. Moser, Advances in Synchrotron Radiation, 1, 105, (2008).

Huajun Liu, P. Yang, Kui Yao and John Wang, Appl. Phys. Lett., submitted.

27

12 4th AOFSRR

XFEL project at SPring-8 Takashi Tanaka, RIKEN SPring-8 Center, Japan

An x-ray free electron laser (XFEL) facility is under construction at the SPring-8 site,

which aims at lasing in the angstrom region in 2011. The civil construction has been

completed in April this year and accelerator components such as C-band accelerator cavities,

electron beam monitors, power supplies, undulatos, are being installed. In this talk, an

overview of the facility and construction status are reported together with the results of the

prototype accelerator operated at the electron energy of 250 MeV and lasing wavelength from

50 nm to 60 nm.

28

13 4th AOFSRR

Status of PLS-II Upgrade and Korean XFEL Kyung-Ryul Kim, on behalf of PLS-II Project Teams of PAL

Pohang Accelerator Laboratory, POSTECH, Pohang Korea, 790-784

The 2.5 GeV Pohang Light Source (PLS) at the Pohang Accelerator Laboratory has been

successfully operated with a total of 27 beamlines installed and 3 beamlines under

construction, in which 6 insertion devices such as undulators and multipole wigglers have

been put into operation to produce special photon beams. Nowadays, Korea synchrotron

users community is demanding higher beam stability and photon energies through the

installation of more insertion devices in the PLS. The PLS-II upgrade program has been

formerly launched in January 2009, incorporating new achromatic version of Double Bend

Achromat (DBA) to allow almost twice as many straight sections of the current PLS with a

design goal of the relatively low emittance of 5.9 nmrad. In the PLS-II, the top-up injection

using full energy injector linac of 3.0 GeV beam energy is planned for much higher stable

beam as well, and thus the production of hard x-ray undulator radiation of 8 to 13 keV is

anticipated to allow for the successful research program namely Protein Crystallography. The

PLS-II machine components of storage ring, linear accelerator and photon beamlines will be

partly dismantled and reinstalled in an 6-months shutdown beginning January 2011, and then

be started the initial commissioning with a 100 mA beam current from July 2011. And PAL

has also proposed the Korean new light source of linac-based X-ray Free Electron Laser

(XFEL) to produce an intense X-ray pulse down to a 0.1 nm wavelength with a 100 fs rms

pulse length. The in-vacuum undulator with a 5.3 mm gap is employed in combination with

an S-band RF linear accelerator to produce a 10.053 GeV electron beam. In this report, the

PLS-II upgrade and XFEL status will be done with a focus on the basic design results and

project implementation plans.

29

14 4th AOFSRR

Present Status of the Siam Photon Laboratory

P. Songsiriritthigul1,2*, P. Klysubun1, S. Duangnil1 and W. Pairsuwan1

1 Synchrotron Light Research Institute, P.O. Box 93, Muang, Nakhon Ratchasima 30000, Thailand 2 School of Physics, Suranaree University of Technology, Muang, Nakhon Ratchasima 30000, Thailand

The current status and future plan of the Siam Photon Laboratory (SPL) will be reported. The

Siam Photon Source has been in routine operation since 2005. The light source has been

continuously upgraded. The energy of stored electrons upgraded from 1.0 GeV to 1.2 GeV. At

present, the beam lifetime is 23 hours at 100 mA. A plannar undulator has been installed and

being commissioned. A 6.4-T WLS will be installed in the beginning of 2009. The light

source has 8 beam channels. Two beamlines for XAS and deep X-ray lithography are in

operation. Two more beamlines for spectromicroscopy/PEEM and SAXS beamlines are in the

commissioning phase. A WLS beamline for macromolecule crystallography is being installed.

An IR microspectrocopy beamline and an additional XAS beamline are in the design phase.

Recently, an energy dispersive monochromator beamline and a normal-incidence

monochromator beamline were relocated from the University of Bonn, Germany, to be

installed at SPL soon. This report will include the development of in-house technical

capabilities and the utilities improvement at the facility.

Keywords: synchrotron light source, beamline

Corresponding author: Prayoon Songsiriritthigul

prayoon@slri.or.th

30

15 4th AOFSRR

Synchrotron X-rays in quest of new horizons in the protein

universe Soichi Wakatsuki, Photon Factory, IMSS, KEK, Tsukuba, Japan

X-ray protein crystallography with high brilliance and tuneability of synchrotron

radiation X-ray beams has been a method of choice for structural biology for the last two

decades. A number of new synchrotron sources, medium to large scales with low emittance

have been constructed and are being constructed while well established SR sources have gone

through or have plans for refurbishment programs to best utilize insertion devices for the next

decades. One remarkable example is PETRA-III which uses the high energy ring with large

circumference for producing low emittance beam. Another project is being proposed as

KEK-X where the 3 km-circumference KEK-B rings with 2000 to 3700 mA of currents will

be used to produce extremely high brilliance beams.

With all these advancements, what kind of biology do we aim to explore? There are three

frontiers: (1) ultimate protein crystallography for large macromolecular complexes and

extremely small crystals (1 micron scale) of flexible molecules, (2) X-ray solution scattering

for medium resolution structures of uncrystallizable complexes and dynamics of

protein-protein interactions and (3) 3D cell imaging with nm-level spatial resolution to

investigate cellular localization and transport of protein complexes in response to various

signals. The need for such hierarchical understanding of biological systems will be discussed

using a rapidly expanding and extremely competitive biological theme of novel ubiquitin

chains. Ubiquitin, a small protein with 76 residues, is involved in almost all biological

phenomena. It is covalently attached to proteins providing a complex pattern of polyubiquitin

chains. These posttranslational modifications provide basis for a plethora of signaling

cascades including immunity, cancer, protein trafficking, DNA repair to name but a few. Due

to the flexibility of the polyubiquitin chains, it is extremely difficult to crystallize them in

complex with their cognate proteins, hence the need for the ultimate protein crystallography.

31

Very often these complexes undergo drastic structural changes during their signal cascades.

X-ray solution scattering is well suited for providing vital information on dynamics of these

protein complexes. Signal cascades involve detection and amplification of external signals,

and transport of signaling molecules from one place to another in the cell, hence the need for

higher resolution (ideally several nm) 3D imaging for understanding their dynamic behavior.

Finally, the combination of these three frontiers will lead to faster and reliable design

strategies for novel drugs with lower side effects against cancer, rheumatoid and immune

responses.

32

16 4th AOFSRR

Structure and Mechanism of An Amino Acid Antiporter

Xiang Gao1,2,4, Feiran Lu1,2,4, Lijun Zhou1,2,4, Xiaochun Li1,2,4, Jiawei Wang1,2, and Yigong Shi2,3,5

1State Key Laboratory of Bio-membrane and Membrane Biotechnology, 2Center for Structural Biology, Department of Biological Sciences & Biotechnology, 3School of Medicine, Tsinghua University, Beijing 100084, China 4These authors contributed equally to this work. 5To whom correspondence should be addressed. E-mail: shi-lab@tsinghua.edu.cn

Virulent enteric pathogens such as Escherichia coli strain O157:H7 rely on acid

resistance (AR) systems to survive the acidic environment in the stomach. A major component

of AR is an arginine-dependent arginine:agmatine antiporter that expels intracellular protons.

Here we report the crystal structure of AdiC, the arginine:agmatine antiporter from E. coli

O157:H7 and a representative member of the amino acid/polyamine/organocation (APC)

superfamily of transporters. AdiC contains 12 transmembrane segments, forms a homodimer,

and exists in an outward conformation in the crystals. A conserved, acidic pocket opens to the

periplasm and is poised to associate with extracellular arginine. Structural and biochemical

analysis reveals the essential ligand-binding residues, defines the transport route, and suggests

a conserved mechanism for the antiporter activity.

mailto:shi-lab@tsinghua.edu.cn

33

17 4th AOFSRR

The development of X-ray microscopy for biomedical applications

Yeukuang Hwu, NSRRC

34

18 4th AOFSRR

The advanced SR structural materials science utilizing novel

measuring and data analysis technique. - From nano science to

pharmaceutical chemistry

Makoto Sakata, Japan Science & Technology Agency

35

19 4th AOFSRR

Megapixels per hour: fast fluorescence imaging at the Australian

Synchrotron.

D. Patersona*, M. D. de Jongea, D. L. Howarda, C. G. Ryanb, D. P. Siddonsc, and R. Kirkhamb

a Australian Synchrotron, Clayton VIC 3168, Australia

b CSIRO, Clayton VIC 3168, Australia c National Synchrotron Light Source, Brookhaven National Laboratory, NY, USA

* E-mail: david.paterson@synchrotron.org.au

A hard x-ray micro-nanoprobe has been constructed at the Australian Synchrotron [1] to

provide microspectroscopy across an incident energy range of 425 keV. Two probes are

used to collect -XRF and -XANES for elemental and chemical microanalysis: a

Kirkpatrick-Baez mirror microprobe for micron resolution studies; and a Fresnel zone plate

nanoprobe with laser interferometry capable of 60 nm resolution. An advanced fluorescence

detector developed by BNL [2] and CSIRO [3] featuring a large solid-angle, 384-element

planar silicon array that will accept count rates greater than 107/s with real-time elemental

deconvolution and image projection has been commissioned for the X-ray Fluorescence

Microprobe beamline. On-the-fly scanning combined with event mode data acquisition

enables sub-ms/pixel dwell. Tests of a 96-element prototype with the KB microprobe have

demonstrated high definition elemental images of over 100 megapixels on a range of

geological and biological samples in practical time frames. Dwell times down to 50 s/pixel

have been realised. Ultrafast XRF acquisition will enable high definition elemental mapping,

the possibility of fluorescence tomography and practical XANES imaging.

[1] D. Paterson, et al., AIP Conf. Proc., 879, 864, (2007).

[2] P. Siddons, et al., AIP Conf. Proc., 705 (953) (2004).

[3] C. Ryan, et al., Nucl. Instr. Meth. B, 260, 1 (2007).

36

20 4th AOFSRR

Fast switching of circular polarization using APPLE-II type

undulator

Kenta Amemiya

Institute of Materials Structure Science, High Energy Accelerator Research Organization

Photon Factory BL-16A is a variable-polarization soft X-ray (200-1500 eV) undulator

beamline, which provides right/left handed circular and horizontal/vertical linear polarizations.

Fast polarization switching using two APPLE-II type undulators in a tandem configuration [1]

is planned at BL-16A. The different polarizations from the two undulators are alternately led

to the beamline optics by modulating the electron orbit through the undulators. The upstream

undulator was installed first, in March 2008, and the circular, linear and elliptical polarization

modes are available at present. The second undulator for fast polarization switching will be

installed in 2010, with financial support from the Quantum Beam Technology Program by

Ministry of Education, Culture, Sports, Science and Technology, Japan. The feasibility of this

technique has been checked prior to the installation of the second undulator, by modulating

the electron orbit at 10 Hz and monitoring the beam intensity. The modulation in the X-ray

intensity agrees well with the expected modulation estimated from an X-ray tracing

simulation. Moreover, a novel optics will be installed in order to match the energy, resolution

and photon flux for the two undulators.

[1] T. Muro et al., J. Electron Spectrosc. Relat. Phenom. 144-147 (2005) 1101; AIP Conf. Proc.

879 (2007) 571; AIP Conf. Proc. 879 (2007) 1051.

37

21 4th AOFSRR

Inter-facility Cooperation

Richard F. Garrett ANSTO, Private Mail Bag 1, Menai, NSW, 2234 Australia

The Asia-Oceania region has a comprehensive suite of synchrotron light source facilities,

which are at least the equal to the Europe and North America. Developments in the region

continue at a rapid pace in all aspects of synchrotron radiation research and instrumentation.

The AOFSRR is an important forum for high level networking between the regions facilities

and user communities, but it also presents many opportunities for collaboration and

cooperation. The regions facilities are faced with similar challenges in both technology (eg

advancements in sources, beamlines and detectors) in serving their respective user

communities, in engaging with industry and in communicating the value of synchrotron based

research to the general public. Some examples of inter-facility cooperation, and the benefits

they bring to each side, will be presented and opportunities for enhanced future collaboration

will be discussed.

38

22 4th AOFSRR

ACCELERATOR BASED PHYSICS RESEARCH AND

PROMOTION OF THE SYNCHROTRON ACTIVITY

IN VIETNAM

Tran Duc Thiep

Institute of Physics, Vietnam Academy of Science and Technology

In this report we will present the accelerator based physics research in Vietnam in

different directions of Nuclear Physics both fundamental and applied investigations as the

study of photofission, photonuclear reactions in the giant dipole resonance region; nuclear

reaction with 14 MeV neutron; study of nuclear reactions and nuclear data at electron

accelerator in the energy range from 15 MeV to 2.5 GeV; study of possibility for producing

intense neutron beam at electron accelerators; study of charge exchange reaction at

accelerator; study of decay of neutron rich nuclei; study of nuclear reaction with heavy ion

and development and application of nuclear methods as photon and neutron activation

analysis and X-ray fluorscence method.

In the report we also discuss about possibility for development and application of

synchrotron radiation in Vietnam in the framework of the collaborations between countries in

Asian Ocean region.

39

23 4th AOFSRR

Synchrotron Participation by New Zealand Researchers

Professor Richard Haverkamp,

Massey University, Palmerston North, New Zealand

With the construction of the Australian Synchrotron, participation by New Zealand researchers in

synchrotron science has been growing at a rapid rate. The New Zealand Government and 11 universities

and government research organisations became founding partners in the new synchrotron and contributed

towards the construction cost and ongoing operational costs. This has been a golden opportunity for New

Zealand science, particularly for young researchers, to extend their scientific research into the realm of

synchrotron science. The very positive impact on NZ science is beginning to be felt.

40

24 4th AOFSRR

Status of Synchrotron Radiation Related Activities in Malaysia

Swee-Ping Chia Physics Department, University of Malaya

50603 Kuala Lumpur, Malaysia E-mail: spchia@um.edu.my

Malaysia does not have a synchrotron radiation facility. Research utilizing

synchrotron radiation is also scarce. Nevertheless, there are some research activities

utilizing the light sources at synchrotron radiation facilities in other countries. Such

researches are usually in the area of condensed matter physics and crystallography. In

the area of nuclear medicine, cyclotron is utilized in positron emission tomography

(PET) scan. Here, the 5.11 keV -ray is used for imaging. In another area, soft X-ray

from plasma sources is also an important tool in physics research.

There is a need to encourage research in Malaysia that utilizes synchrotron

radiation. In order to achieve this, we would like to call upon countries having

synchrotron radiation facilities in the neighbourhood of Malaysia to open up their

facilities to researchers from Malaysia. Once there are sufficient users of synchrotron

radiation, it would be easier to persuade the Government to have one such facility in

Malaysia.

mailto:spchia@um.edu.my

41

25 4th AOFSRR

Cheiron School Students Report Session (A)

Jingyuan Ma Shanghai Synchrotron Radiation Facility/SINAP, CAS, China

In this short presentation, a very brief introduction of the experience and gains in 3rd

Cheiron School will be represented from a postgraduate students point of view. It concludes

couples of valuable things for me during the whole school course: the knowledge learned

from the effective lectures, the views enlarged by taking site tours in Spring-8, the inspiration

get from having conversation with experts, the exercise obtained through practicing at

beamlines, and the friendship knitted up with classmates as well. All of these give me

personal realization about the importance of running Cheiron School and certain

understanding on the role of AOFSRR in the international SR community. Whats more, Id

like to show my gratitude to all the people who give me guide and help in all my experience

dealing with synchrotron radiation knowledge and technology.

(B) Somchai Tancharakorn

Research & Academic Division, Synchrotron Light Research Institute, 111 University avenue, Muang district, Nakhon ratchasima, 30000 Thailand

During November, 2nd 11th 2009, the third AOFSRR (Asian Oceania Forum on

Synchrotron Radiation Research) school or the Cheiron School 2009 was once again held at

SPring-8, Japan. In this year, seven Thai researchers/students from different institutes had

joined others from countries in Asian-Pacific region in this training.

I, on behalf of Thai participants of this school, would like to express my deep gratitude

to AOFSRR for organizing the Cheiron School. During the training, he students learned

different techniques and theories varied from synchrotron radiation to advanced technology

such as X-ray free electron laser (XFEL), the program started with the lecture session in

which basic and complicated theories were clearly illustrated. In the meet the expert session,

students had opportunities to discuss in more details of specific techniques and in the last

42

session: the beamline practical, the students gain their better understanding of synchrotron

techniques by conducting experiments themselves.

It is clear that the Cheiron School project has succeeded its aims by providing basic

knowledge and perspectives of synchrotron radiation science and technology for students.

Moreover, giving the circumstance of the well-equipped facilities and the remarkable research

environment, the project has assisted in the future research networks and collaborations

between researchers who will be the major drive for the advancement of synchrotron

researches in Asia-Pacific regions in the near future.

43

Posters

26 4th AOFSRR

Present status of ERL project in Japan

Hiroshi Kawata ERL Project Office, High Energy Accelerator Research Organization, KEK,

Oho 1-1, Tsukuba, Ibaraki, 305-0801, Japan

The Energy Recovery Linac (ERL) project is progressing at KEK in Japan as a future light

source to progress the new synchrotron radiation activities such as nm-scale imaging,

femto-second science, local-structure analyses, and material sciences under extreme

conditions, in addition to the straightforward extensions of the present researches.

Furthermore, as an option for ERL, an X-ray free-electron laser (FEL) with an oscillator

configuration, X-FELO, has been proposed very recently[1] and collects much attention. To

realize the ERL, the development of the accelerator components is in progress. After the fiscal

year of 2008, several accelerator componentsa DC photo-cathode electron gun,

superconducting cavities for the injector and main accelerator, high power RF sources,

etc.were fabricated and tested. One of the big events in 2008 was that the development of

the infrastructure for the compact ERL has been approved. Thus, the year of 2008 can be

regarded as the starting point for the construction. I would like to present the present status of

the ERL project.

References:

[1] K.-J. Kim, Y. Shvydko, S. Reiche, PRL. 100, 244802 (2008)

44

27 4th AOFSRR

Status of Timing System and Its Upgrade for PLSII

B.R. Park, M.H. Chun, J.W. Lee, S.J. Park and K.R. Kim Pohang Accelerator Laboratory, POSTECH, Pohang, 790-784, Korea

The timing system for the Pohang Light Source(PLS) consists of a synchronous universal

counter, AND gate, delay generators and other commercial modules. All the timing modules

are installed in the NIM crate and controlled by EPICS with VME system for the better

operation of timing system. The timing system has been operated very well for PLS decay

operation mode. But that should be upgraded for the top-up operation of PLS to increase the

beam injection efficiency, to decrease the beam loss, and to supply the injection timing signals

for beam line users. Therefore we are improving synchronization LINAC RF and SR RF now.

Also we are going to develop event system for PLSII.

45

28 4th AOFSRR STATUS OF PLS-II HIGH-LEVEL CONTROL SYSTEM UPGRADE

E.H. Lee, J.M. Kim, J.W. Lee, S.J. Park, and K.R. Kim

Pohang Accelerator Laboratory, San 31, Hyoja-dong, Nam-gu, Pohang, Kyeongbuk, Korea

The PLS(Pohang Light Source) is 2.5 GeV synchrotron radiation source. The current

PLS high-level control system including control room will be totally upgraded for the PLS-II.

The PLS-II high-level control system consists of operation system, surveillance system, and

data management system. Operation system does machine control and monitoring through a

large LCD display wall, OPI(Operator Interface) system, and monitoring system. Surveillance

system does IOC server monitoring, PV status monitoring, and PV range checking. The data

management system provides data managing servers such database server, web server,

gateway server, NFS server, and back-up server

46

29 4th AOFSRR STATUS OF PLS-II BPM CONTROL SYSTEM UPGRADE

J.W. Lee, E.H. Lee, D.T. Kim, S.J. Park, and K.R. Kim

Pohang Accelerator Laboratory, San 31, Hyoja-dong, Nam-gu, Pohang, Kyeongbuk, Korea

The PLS(Pohang Light Source) is 2.5 GeV synchrotron radiation source. The number of

beam position monitors (BPMs) around the PLS storage ring chamber is 108. The 108

analog-type Bergoz BPM modules are used to process the BPM pick-up signals. There are 12

EPICS IOCs in the field to process the signals from the BPM modules. The PLS-II storage

ring has 96 BPMs around the storage ring chamber. For the PLS-II upgrade, we are going to

partially replace current analog-type Bergoz BPM modules with the state-of-art digital-type

BPM modules. The digital-type BPM module will provide advanced beam position

monitoring features such as slow acquisition (10Hz), turn-by-turn (TBT), first-turns (FT), and

fast acquisition (10KHz). The current 12 EPICS IOCs of the PLS will be recycled for the

PLS-II.

The PLS(Pohang Light Source) is 2.5 GeV Synchrotron Radiation Source and started

its operation in1995. The PLS storage ring is equipped with 108 BPMs for beam position

monitoring.

The current PLS BPM system uses analog BPM electronic modules for pick-up signal

processing. There are 12 VME/VxWorks-based EPICS IOCs for data acquisition and

processing from these BPM modules.

The PLS-II storage ring will have 96 BPMs. Current analog BPM modules will be partially

replaced with the state-of-art digital BPM modules for

pick-up signal processing. Digital BPM modules can provide advanced beam diagnostic

capabilities such as Turn-by-Turn measurement, First-Turns measurement, Fast

Acquisition (10KHz), and slow Acquisition (10Hz).

References:

1 Burns G, Dacol F H. Solid State Commun, 1982, 42: 9-12

47

30 4th AOFSRR

The status of Pohang Light Source Ilmoon Hwang, pohang Accelerator Laboratory, Pohang, Korea

Activities for performance improvement have been carrying out in PLS storage ring.Major activities for performance improvement are Matlab Middle Layer implementation, LOCO application and orbit feedforward along ID gap. In this presentation, we will describethe status of performance improvement in PLS storage ring.

48

31 4th AOFSRR

Improvement SR RF Control System and Control status of PLS-II

MPS/RF Control System for PLS

J. C. Yoon, H. G. Park, J. W. Lee, S. J. Park, K. R. Kim, N. S. Nam(PAL) Pohang Accelerator Laboratory, POSTECH, Pohang 790-784, Korea

PLS SR RF control system of accelerator storage ring in operation experienced

performance improved control system in summer shutdown 2009. As the RF number 5 cavity

install is completed, existing RF VME control system's improvement was required for

enhancing RF function in PLS. Improvement required existing system operated as a RF

control system was applied to hardware and application program. The PLS-II MPS/RF control

system can be designed and upgraded in some ways. The magnetic power supply (MPS)

control system will be consist of the VME based IOC and the Embedded IOC. The VME

system of the PLS will be used for the Bipolar power supply control system. The Embedded

IOCs will be used for the new Bipolar MPS and Unipolar MPS control system. According to

design status of the RF cavity type such as adding NC cavities or new super conductivity(SC)

RF cavities, the high power RF system will be different and adding some high power sources

from present status. We described design status of PLS-II MPS/RF control system using

Embedded IOC, VME IOC, an EPICS development environment, and OPI Extension

software.

49

32 4th AOFSRR

Coherent Hard x-ray free-electron laser based on Echo-enabled

Staged Harmonic Generation scheme

FENG Chao1,2 & ZHAO ZhenTang1

1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China 2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China

A novel approach to producing coherent hard x-ray based on the echo-enabled staged

harmonic generation (EESHG) free-electron laser scheme is proposed. This scheme is not a

simple cascaded echo-enabled harmonic generation (EEHG), but consists of an EEHG, a

beam shifter and a conventional high-gain harmonic generation (HGHG) like configuration,

which also works in the EEHG principle. In the first stage, all over the whole electron beam is

energy modulated by a laser beam in the first modulator and then converts into separate

energy bands by a very strong dispersion section. In the second modulator, the seed laser is

adjusted so that only the tail half part of the e-beam is energy modulated, then this beam is

sent through the second dispersion section which converts the energy modulated part into a

density modulation. The radiation from the first stage serves as the seed laser of the second

stage, the beam shifter between two stages is so tuned that the head part of the electron beam

which has already been modulated and shredded to energy beamlets can exactly interact with

the radiation from the first stage in the modulator of the second stage, so the total harmonic

number of this two stage structure will be over one thousand. It is shown that fully coherent

hard x-ray radiation can be obtained directly from a conventional VUV seed laser with

reduced size and cost in comparison with the self-amplified spontaneous emission (SASE)

based hard x-ray facilities.

50

33 4th AOFSRR

MAGNETIC MEASUREMENT AND SHIMMING FOR EPU100 OF

SSRF Wei Zhang, Jie Lu, Qiaogen Zhou, Hongfei Wang

Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China

An elliptically polarizing undulator EPU100 has been built in Shanghai Light Source

(SSRF) recently. This undulator with APPLE-II type magnet structure has a total length 4.3 m

with a period of 100 mm. It was designed to provide four polarization operation modes:

circular, elliptical, horizontal and vertical. The magnetic measurement has been finished by

using the 3-dimensional Hall probes and flipping coil system. This paper details the method of

the magnetic measurement and magnetic shimming for EPU100. The maximum R.M.S. phase

errors 3.8 and 2.2 are calculated from the measured magnetic fields respectively in the

horizontal polarization mode and vertical polarization mode.

51

34 4th AOFSRR

The upgrade project of Hefei Light Source

Li weimin, Wang Lin, Xu Gongliang, Feng Guangyao, Zhangshancai, Wu Ziyu

National Synchrotron Radiation Laboratory of University of Science and Technology of China, Hefei 230029, China

Hefei Light Source is composed of 800 MeV storage ring, 200 MeV electron linac and

transfer line, which is designed and constructed twenty years ago. Several factors limit the

performance of HLS, for examples, less number of insertion devices and large beam

emittance. To meet the requirements of synchrotron radiation users, an upgrade project of

HLS would be carried out in the next two years. Several sub-systems will be renewed, such as

magnet system, power supply, beam diagnostics, vacuum system, etc. The upgrade scheme is

described in this paper, including magnet lattice design, nonlinear performance, collective

effects, beam injection, orbit detection and correction, injector, etc.

52

35 4th AOFSRR

Optical metrology at SSRF

Luo Hongxin, Wang jie, Xiao tiqiao

Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China

Mirrors used in SSRF are typically segments of far-off axis aspherics, such as cylinders,

ellipsoids, and toroid with radii of curvature from tens of millimeters to hundreds of

kilometers. Surface quality for these mirrors is generally represented by slope errors(rms) and

micro-roughness. Typical tolerances for these mirrors used in SSRF are 3rad for rms slope

error and 0.3nm for rms micro-roughness. Measuring the mirrors used in SSRF before setup

in beamline with high precision is very important. Optical metrology methods such as LTP,

interferometry and 3D profilometer used at SSRF are introduced in this paper.

Optical group of Shanghai Synchrotron Radiation Facility does its best to build a

comprehensive and reliable optical testing laboratory. Through the optical testing laboratory's

work, all staff of the beamlines are aware of the various surface parameters of their optical

elements used in their beamline and know how to maintain the normal operation of optical

elements. Moreover, our work helps them to communicate with the optical components

manufacturer effectively in order to making their products to meet better the requirements of

Shanghai Synchrotron Radiation Facility beamline construction.

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The development of Bending Machines at SSRF

Song XUE, Yuan FU, Wanqian ZHU Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China

Bending machines have important effects on beamlines. There are fives sets of big

dimension bending machines including collimator mirrors and focusing mirrors used in the

seven beamlines of SSRF. The bending machines main functions are reflecting beam,

collimating beam, focusing beam and cut-off energy. The third generation synchrotron source

requires the bending machines have high precision slope error and high stability. The mirrors

length is 1000mm. The bending machines bender type is four-cylinder bender and bender

driver is jack mode. SSRF developed the five sets of big dimension bending mirrors with the

cooperation with PAL. The bending machines consist of mirror bending system, movement

system, gravity system, cooling system, vacuum system, adjustment system and control

system. Based on the design targets, the minimum bending radius is 2 km and the radius

resolution is 50mm, the mirrors tangential slope errors are less than 3rad, the vacuum of

bending machines is better than 510-7Pa. The mirror pose adjustment mechanism can make

the 5-dimensions adjustment including X direction, Y direction, pitch angle, roll angle and

yaw angle. The key technologies of bending machines including dynamic simulation

calculation, slope error calculation and gravity compensation, mirror tangential radius and

slope error off-line test. In the final test the slope errors are less than 2 rad and targets such

as mirror adjustment range, resolution and repeatability are all better than the design targets.

The five sets of bending machines all operate in good condition.

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Present status of crystal cooling of SSRF DCM with sagittal focus

WANG Na-Xiu, LIU Shi-Lei, XU Zhong-Min, BIAN Feng-Gang Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China

Design of 1st crystal cooling geometry of SSRF DCM with sagittal focus, which is made in

China, is mainly reported. Simulation indicates that the broadening of the FWHM of Si(111)

rocking curve induced by the heat load is about 3.7 rad RMS, which is fairly good

agreement to the experimental value of 5 rad. Meanwhile according to the linearity between

the photon flux extracted from the monochromator and electron current of the storage ring, it

had been proven that this scheme is reliable.

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The variable included angle plane grating monochromator

Song XUE 1 , Jiahua CHEN 1 , Renzhong TAI 1 , Yong WANG 1 , Yanqing WU 1 , Min CHEN 1 Qipeng LU 2 , Zhongqi PENG 2

1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China 2. Changchun Institute Of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences,

Changchun 130000, China

This article discusses the variable included angle plane grating monochromator on the

soft X-ray spectromicroscopy beam-line at Shanghai Synchrotron Radiation Facility(SSRF).

Operated in collimated light, the variable included angle plane grating monochromator

changes the variable included angle to select photon energy by combining simultaneous

rotation and translation of the plane mirror. The variable included angle plane grating

monochromator consists of plane mirror, plane grating, sin-bar scanning mechanism, linear

driving mechanism, grating exchange mechanism, position adjusting mechanism, water

cooling system, vacuum chamber, UHV system, driving control system. Moreover, there are

two different groove density plane gratings, installed abreast on the substrate, can be

interchanged under vacuum to meet different experiment requirements. We resolved high

precision repeatability of mechanical transmission system and effective water cooling system

of optical elements with high heat load in UHV, and set up the high precision demarcating and

detecting system. The energy range, energy resolution and energy repeatability, designed as

250eV-2000eV, 4500@244eV and 20meV@244eV respectively, are the main capacities of the

variable included angle plane grating monochromator, and the corresponding test results are

192-2182eV,17900@244eV and 4.3meV@244eV (RMS), 11meV@244eV (MAX)

respectively, measured by photodiode and measuring the Ar shell excitation spectra.

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The Motion Control System in SSRF beamlines

Zheng Lifang, Liu Ping, Zhang Zhaohong, Hu Chun, Wu Yingfeng, Mi Qingru, Li Zhong

Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China

SSRF beamline control system takes three kinds of responsibilities: motion control

system, beamline status monitor and protection system, the beam position acquiring and

diagnosing system. The motion control is the essential one. It provides the required beam in

energy, size and flux by controlling the Monochromator, mirror chamber, slits and other

optical components. There are two kinds of hardware for motion control system: VME-based

MAXv controller and SLS drivers, RS232-based controller. The control software is developed

under EPICS.

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BEAMLINE SURVEY AND ALIGNMENT IN SSRF

Ming Ke, Song Xue, Jie Wang, Chenghao Yu Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China

Shanghai Synchrotron Radiation Facility, SSRF, is a 3.5 GeV third-generation

synchrotron radiation light source with a tight alignment requirement of better than 0.25 mm

relative to the light emission point for key beamline components. This defines that all the

devices, instruments and components are adjustable; the theoretical and actual axis of all the

optical components should be in coincidence with beam line axis; the position and rotation

angle of key optical components should be accurately recorded and could be adjusted to

decrease its deviation.

During the installation stage of the first 7 beamlines, state-of-the-art techniques have

been employed. One significant high-profile is the establishment of hierarchical control

network system scattered among the experimental hall and protection hutches, which provides

a unified coordinate system and sufficient monuments for components installation and

alignment. The local control network for each beamline itself has a relative accuracy of better

than 0.12 mm among adjacent monuments by taking advantage of optimal observation

scheme and least square adjustment algorithm. It can be updated timely to reflect the

historical changes due to slab subsidence and other sources of instability; hence it delivers the

spatial information, which is really reliable and accurate. Other advanced techniques have

been used including the fiducialization of small optical components by articulated arm and

CMM etc, the rapid on site adjustment and positioning manner via laser tracker, and unique

cross check approach incorporated with precise level, theodolite, and alignment laser etc.

Except for the resourceful instrumentation and method, the survey and alignment

preparation and implementation for all the beamlines are very effective and have been

organized in a streamline way, which assured the installation has been carried out smoothly

and on schedule. According to actual alignment data, 0.2 mm positioning accuracy has been

achieved for all the key components and it has been corroborated by beam line

commissioning. Partially thanks to the high quality of survey and alignment work, all the

58

beamlines have achieved the important milestone, acquiring synchrotron radiation light at

monochromator, in less than three days.

Relative to traditional beamline survey and alignment method that exploits theodolite

and level, the 3D survey technique adopted in SSRF is more credible, effective and precise,

which has a promise perspective for the future SSRF beam line project.

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X-RAY BEAM POSITION MONITOR SYSTEM FOR SSRF Zhong LI*, Jian-ying ZHOU, Xiang-yun QING, Zhao-hong ZHANG, Chun HU, Zhi-hua WEI, Pei-rong

GONG Devision for Beamline Engineering,

Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China ail: *Em .cn lizhong@sinap.ac

X-ray beam position monitor (XBPM) is an eye to find the position of the X-ray beam in

synchrotron radiation facility. It is helpful for storage ring and beamline commissioning.

An X-ray position monitor system for primary seven beamlines in Shanghai Synchrotron

Radiation Facility (SSRF) is home developed. The system includes monitor, data acquirement

system, data transfer net and personal-operation-interface (POI). Quad-blade beam position

monitor (BBPM) with CVD diamond blades, fluorescent screen based on CVD diamond, and

wire-scanning beam position monitor (WBPM) are designed for beamlines with different light

source. The signal from BBPM or WBPM is amplified by a current amplifier and then

converted to digital signal which is transferred to SSRF beamline control net. POIs integrated

in a beamline control interface for each beamline and in a summary interface in the central

control room can give the value and curve depended on time for each X-ray beam position

monitor.

mailto:lizhong@sinap.ac.cn

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SSRF BEAMLINE INTERLOCK SYSTEM P.R.Gong, Z.X.Zhu

Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China

SSRF beamline interlock system includes Personal Safety System (PSS) and Equipment

Protection System (EPS). The PSS is to set up a logical action by using the searching buttons,

door switches, emergency buttons etc. to interlock the photon shutters and to keep the

experimenters from the unexpected radiation hazard. The EPS is to monitor all working

parameters such as temperature, vacuum, water flow to protect devices from the possible

damage while the parameters are over the pre-set threshold. Both systems are based on PLC

and communicate smoothly with measured devices and other interlock systems. The beamline

interlock system has been put into run in SSRF from the middle of 2008 and works well up to

now.

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INTRODUCTION OF THE FRONT ENDS AT SSRF WU Guanyuan, ZHANG Min, CHEN Ming

Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China

In the first phase of construction, seven front ends have been constructed, that 2 from

bending magnet (BM) and 5 from insertion device (ID). The power density and total power

are 37kW/mrad2 and 10kW for in-vacuum Undulator and multi-poles Wiggler respectively.

SSRF front end is designed to confine the photon beam, absorb the unwanted heat, monitor

the beam positionprotect personnel and equipment safety. The standardization, reliable

technology, ease in installation and maintenance are design philosophy of the SSRF front

ends. With operate for two years, the front ends show that pressure has no any turbulent to the

electron orbit and its interlock system can provide a quick vacuum protection for the storage

ring in the case of a vacuum failure in the beamline, all components impinged by SR work

well, and the radiation of background level can be obtained in optical hutch when the safe

shutter closed. Here we will introduce the general design, installation and operation of these

front ends.

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Present Status of Public Beamlines at SAGA-LS

Toshihiro Okajima Kyushu Synchrotron Light Research Center, Yayoigaoka, Tosu, Saga 841-0005, Japan

SAGA-LS has been operated well since February 17th, 2006. Four beamlines, BL06, BL10,

BL11 and BL18, were newly built in the fiscal year of 2008. Nine beamlines are now

operating adding these four beamlines. Beamlines, BL10 and BL11, are public beamlines

newly built by the local government of Saga Prefecture for public users. BL11 is standard

hard X-ray beamline using a Si(111) double crystal monochromator. BL10 is a new soft X-ray

beamline using an APPLE- type undulator as a light source. The undulator supplies the

tunable polarization of the light to us. The experimental instruments for photoelectron

emission microscopy (PEEM) and high resolution angle-resolved photoemission spectroscopy

(ARPES) were prepared. Beamlines BL06 and BL18 are contract beamlines built by Kyushu

University and Nikon Corporation, respectively. Three contract beamlines are also operating

now adding these two beamlines. The new hard X-ray beamline, BL07, is also under

construction as a public beamline. The beamline was designed for using wide energy range

from 4 to 30 keV X-ray generated by the newly designed superconducting wiggler. The

X-rays will be supplied for the several experiments: e.g. XAFS, X-ray fluorescence analysis,

X-ray imaging and protein crystallography.

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Preliminary Design of Coherent Hard X-Ray Beamline

at the Taiwan Photon Source

Yu-Shan Huang*1, Chi-Yi Huang1, Chien-Hung Chang1, Mau-Tsu Tang1, Wen-Yan Peng1, Tsang-Lang Lin2, Shih-Lin Chang2, Hsin-Lung Chen2, and Chih-Hao Lee2

1 National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan 2 National Tsing Hua University, Hsinchu 30013, Taiwan

The coherent hard X-ray beamline is one of the initial phase of beamlines designed for the

Taiwan Photon Source (TPS), a new 3 GeV ring under construction at the National

Synchrotron Radiation Research Center (NSRRC). With an in-vacuum undulator, this

beamline will provide highly coherent beam mainly for X-ray photon correlation

spectroscopy (XPCS), small Q coherent diffractive imaging (CDI) and small angle X-ray

scattering (SAXS) experiments. The beamline is designed to operate in the energy range 5-20

keV, suitable for most conventional SAXS, including anomalous measurements. A vertical

focusing mirror collimates the beam to preserve the coherent photons with compatible

coherent lengths in vertical and horizontal directions. The horizontal coherence is

nevertheless filtered by pairs of well polished slits for coherent experiments. An optional

horizontal mirror focuses the incoherent beam horizontally for conventional SAXS

experiments.

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Niversity-of-Tokyo SR Outstation BL07LSU at SPring-8

Masaharu Oshima1,2 and Akito Kakizaki1),3) Synchrotron Radiation Research Organization1), University of

Tokyo School of Engineering2), Institute for Solid State Physics3) 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

We have constructed a new soft X-ray (SX) 27m-long undulator beamline for materials

science, University-of-Tokyo SR Outstation at SPring-8 BL07LSU. Eight figure-8-type

undulators can provide us with polarization-controlled SX with photon energy ranging from

250 eV to 2 keV.

At this beamline, mainly three kinds of experiments will be performed from autumn in

2009. The first project is 3DnanoESCA where angle-resolved photoelectrons are detected

from the sample irradiated by about 50 nm size SX beam for pin-point in-depth profiles in

nano-devices. The second project is SX emission spectroscopy for biomaterials and operating

polymer electrolyte fuel cells. The third project is time-resolved photoemission spectroscopy

for photo-induced phase transition and photo-catalytic reactions.

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XRD Beamline and Endstation

Zhong LI, Qing HE, Sisheng WANG, Wen WEN, Mei GAO, Xingtai ZHOU

Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China

BL14B1, X-ray diffraction beamline (XRD), one of the seven beamlines in the primary

phase of Shanghai Synchrotron Radiation Facility (SSRF), aims at the research in material

sciences, condensed physics, crystallography, and chemistry etc.. This beamline is based on a

bending magnet light source. The kernel optical devices include a pre-collimating mirror, a

sagittal double crystal monochromator (DCM) and a post-focusing mirror. The

pre-collimating mirror is a bended silicon crystal with Rhodium coating to collimate the

X-ray beam entering DCM in order to enhance the energy resolution. The DCM is a water

cooled double Si (111) crystal monochromator with a bendable second crystal for sagittal

focusing. The energy range is from 4keV to 22keV. The post-focusing mirror has two

reflection surfaces, with or without Rhodium coating, to suppress the harmonics in low energy

range. It can work at high brightness mode or high resolution mode depending on whether the

mirror is bended or not in meridional. The experimental station is equipped with a Huber

5021 diffractometer and SPEC of data acquirement software.

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SSRF SOFT X-RAY SPECTROMICROSCOPY

Renzhong TAI, Yong WANG, Zhi GUO, Rui YANXiangjun ZHEN,

Min CHEN, Yanqing WU, Jiahua CHEN, Song XUE, Hongjie XU Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China

As one of the only soft x-ray beamline in the first-phase beamlines at SSRF, this

beamline provides broad energy varies from 250 to 2000eV, covering the K-edge of C, N, O,

F, Na, Mg, Al, Si, and L edges of P, S, Cl, K, Ca, Fe, Cu, Zn, etc. Therefore, it is expected to

have wide application in biological science, environmental science, polymer, and material

science, etc. Besides, as it selected an elliptical polarized undulator as light source, it could

even be used to study x-ray-polarization-dependent materials. So far, preliminary qualitative

characterization for circular polarization has been conducted for this EPU source. More

quantitative one will be done soon.

For the beamline, a varied-included-angle plane grating monochromator was used. This

PGM was operated in a collimated mode, with its Cff value adjustable from 1.8 to 2.5,

designed and fabricated by domestic collaboration. Argon gas ionization spectrum proved the

energy resolving power is better than 18000 at photon energy of 244eV.

A scheme of a scanning transmission x-ray microscopy (STXM) was adopted at

end-station. So far, spatial resolution of better than 30 nm has been demonstrated. Therefore,

by tuning photon energy, a serious of transmitted 2D imaging including NEXAFS information

can be recorded. Moreover, 3D imaging and Total Electron Yield (TEY) functions are

preservedthough have not been tested so far.

The commissioning of the soft x-ray Spectromicroscopy beamline was formally started

from last December. The performances of the beamline have reached or surpassed the

designing goals according to the actual measurements made by domestic experts. So far, tens

of experiments have been conducted and some exciting preliminary results have been

obtained, demonstrating its conspicuous advantage as a novel experimental method, since its

first operation to users from this May 6.

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X-RAY IMAGING AND BIOMEDICAL APPLICATION BEAMLINE

AT SSRF

Tiqiao Xiao*, H