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Welcome Dr. R. Aymar

and CERN Delegation

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Welcome

Vice Minister Prof. Cheng Jinpei

Deputy DG Prof. Ma Yanhe

from MoST

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Welcome

Prof. Han Jianguo

DG of International Cooperation B

ureau of MoST

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Welcome

Prof. Lei

DG of International Cooperation B

ureau of MoE

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Welcome

Prof. Guo Huadong

Deputy Secretary General

Prof. Zhang Jie

DG of Basic Sciences Bureau

from CAS

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Hesheng ChenInstitute of High Energy Physics

Chinese Academy of Sciences

Beijing 100049, China

High Energy PhysicsHigh Energy Physics

in Chinain China

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Outline• HEP community in China

• Inst. of High Energy Physics

– Beijing Electron-Positron Collider

– Non-Accelerator physics

• Cooperation with CERN

• BEPCII

• Middle and Long term plan

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HEP Community in China• Inst. of High Energy Physics (IHEP)• Univ. of S&T of China (USTC)• Peking Univ.• Tsinghua Univ. • Shanghai Inst. of Applied Physics • Chinese Inst. of Atomic Energy (CIAE)• Shandong Univ.• Huazhong Normal Univ. • Nanjing Univ.• Shanghai Inst. of Ceramics (SIC)• Huazhong Univ. of S&T • ……

Many Univ. groups for PP and NP theories.

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Korea (4)

Korea Univ. Seoul National Univ.

Chonbuk National Univ.Gyeongsang Nat. Univ.

Japan (5)

Nikow Univ.Tokyo Inst. of Technology

Miyazaki Univ.KEK

U. Tokyo

USA (4)Univ. of Hawaii

Univ. of Texas at DallasColorado State Univ.

SLAC

UK (1)Queen Mary University

China (18)IHEP of CAS

Univ. of Sci. and Tech. of ChinaShandong Univ., Zhejiang Univ.

Huazhong Normal Univ. Shanghai Jiaotong Univ.

Peking Univ., CCAST Wuhan Univ., Nankai Univ.

Henan Normal Univ.Hunan Univ., Liaoning Univ.

Tsinghua Univ., Sichuan Univ. Guangxi Univ., Guangxi Normal Univ.

Jiangsu Normal Univ.

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International Collaborations

• CERN: – LHC: CMS, Atlas, LHCb, Alice– LEP: L3/L3C, ALEPH– AMS

• KEK: Belle • DESY: HERAb• BNL: RHIC/Star• FNAL; D0• SLAC: Babar• LNF: KLOE• Kamland, Dama…• ……

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Institute of High Energy PhysicsInstitute of High Energy Physics

Comprehensive and largest fundamental research center in China

For :For :– Particle physics: Exp. and TheoryParticle physics: Exp. and Theory– Accelerator technologies and applications Accelerator technologies and applications – Synchrotron radiation technologies and applicationsSynchrotron radiation technologies and applications1000 employees, ~ 650 physicists and engineers, 350 PhD Students and postdoctors

Established at 1950, and became an independent inEstablished at 1950, and became an independent institute at 1973 . stitute at 1973 .

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Research Divisions• Experimental Physics center: BES, BESIII, CMS, Atlas…

• Particle Astrophysics Center ： cosmic ray, astrophysics, neutrino physics, particle astrophysics…

• Theory Division: particle physics, nuclear physics, field theory, cosmology…

• Accelerator Center: BEPC, BEPCII, high power proton accelerator

• Beijing Synchrotron Radiation Lab.

• Nuclear Analysis Lab.

• Free Electron Laser Division

• Computer and Network Center

• Center of Hi-Tech R&D

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Bird’s Eye View of Bird’s Eye View of BEPCBEPC

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BEPC constructed in 1984 –1988 with beam energy: 1 – 2.8 GeV– Physics Run ： Luminosity 1031cm-2s-1 @ 1.89GeV, 5 month/year– Synchrotron Radiation Run ： 140mA @ 2.2 GeV, 3 month/year

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The Beijing-Electron Positron Collider The Beijing-Electron Positron Collider (BEPC)(BEPC)

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Main Physics Results from BESBES

• Precision measurement of mass: world average value changed by 3, ccuracy improved by factor of 10, lepton universality

• R Measurement at 2-5GeV: R/R 15-20% →6.6%• Higgs mass prediction from SM• g-2 experiment

• (Mz2) -1 : 128.890±0.090 → 128.936 ± 0.046

• Systematic study of (2S) and J/ decays.

• Obtain fDs from Ds pure leptonic decay.

• Measure Br(DS ) in model independent way

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World‘s largest J/ and data sample (10(1066))More interesting physics results are expected.

J/

0

10

20

30

40

50

60

MarkIII DM2 BESI BESII

0

2

4

6

8

10

12

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MARKI MarkII CrystalBall

BESI BES II

01.11-02.399.11-01.3

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New Resonance from J/pp (PRL 91, 022001 (2003))

P Pbar bond state? Multiple quark state?

M=1859 MeV/c2

< 30 MeV/c2 (90% CL)

J/pp

M(pp)-2mp (GeV)

0 0.1 0.2 0.3

3-body phase spaceacceptance

2/dof=56/56

fitted peak locationacceptance weighted BW +3 +5

10 25

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Other Major research fields in IHEPOther Major research fields in IHEP

1. Non-Accelerator physics experiment– L3 Cosmic ray measurement at CERN– Yangbajing - Argo RPC carpet project– Hard X ray modulated Telescope satellite – ray burst detector in the test flight of Chinese Ma

n-operate space-craft (Jan. - June 2001)– X-ray detector of Chinese Moon project.

2. Theoretical physics

– Particle physics and field theory– Intermediate and high energy nuclear physics– Particle-astrophysics and cosmology

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Yangbajing Intl. Cosmic Ray ObservatoryTibet, 90km from Lasha, a.s.l. 4300 m

IHEP-INFN RPC China-Japan Air Shower Array

15000m215000m2

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AMS01 permanent magnet and structure were built at Beijing, and became the first big magnet in space as payload of Discovery June 1998.

• Search for antimatter and dark matter • precision measurement of isotopes

Alpha Magnetic Spectrometer

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Hard X-ray Modulate Telescope Satellitescan sky for point sources

Charged particle shielding

Collimator

Crystals

PMTSupport structure

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3. Accelerator technology3. Accelerator technology– high luminosity e+e- collider– high power proton accelerator– application of low energy accelerators

4. Radiation technique and application4. Radiation technique and application– Synchrotron radiation – Free electron laser– Nuclear analysis techniques and its applications– Radiation protection

5. Nuclear detector and electronics5. Nuclear detector and electronics

Other Major research fields in IHEP Other Major research fields in IHEP

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BEPC

4w1

Diffuse ScatteringX-ray fluorescence

analysis

Topography

4B9

X-ray DiffractionSmall angle scattering

Photoemission SpectroscPopy

3B1

Lithography

3W1

Middle energy

4W1B

4W1A

4B9B

4B9A3B

1B

3B1A

3W1A

3W1B

4 wigglers and 13 beam lines. > 300 exp./year from > 100 institutions

Beijing Synchrotron Radiation Facility

140mA@2.2GeV

1W1A

XAFS1W1B

High-pressure diffraction

LIGA

VUV

Macromolecular

3B3

1w1

4w2

3B3

Soft X-ray Optics

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Structure of third type of light–harvester protein. The structure diffraction data taken at BSRF.

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Beijing Free Beijing Free Electron Laser Electron Laser

• First in Asia at 1993

• Beam energy 30 MeV

• Infra-red FEL

• Applications

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Cooperation with CERN Promote Chinese HEP strongly

– Long history: first contact at 1958 – Many exchanges since earlier 70’– Join experiments since the end of 70’ – CAS-CERN cooperation agreement 1981– LEP: L3/L3C(HCAL, BGO,To) ALEPH– Computer link: remote login(1986), X25(1988)– MoST-CERN cooperation agreement 1991– CNSF-CERN CMS & Atlas MoU late 90’

Important piece of China-Europe S&T cooperation

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LHC ExperimentsLHC Experiments

1. CMS → talk of Prof. W.G. Li – 1/3 of CSC at muon end caps– HV boards for RPC – RPC of barrel muon (Beijing Univ.) – carts of magnet doors, floor 2. Atlas → talk of Prof. G.L. Tong – Drift Monitor chambers

3. LCG: → talk of Prof. G. Chen 4. Data analysis and Physics studies 5. LHCb: → talk of Prof. Y.N. Gao 6. Alice: → talk of Prof. D.C.Zhou

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LHC Cooperation Coordination Group

– advice to MoST and CNSF– coordination LHC cooperation efforts – contact with CERN– Supervise

• LCG working group • Physics Working group

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BEPC future development High Precision Frontier: precise measurement in charm energy region (2-4 GeV), and search for new phenomena. • Transition between continuum and resonance's, perturbative and non-perturbative QCD• Rich of resonance's, charmonium and charmed mesons. • New type of hadronic matter predicted in the region, e.g. glueball and hybrid ， pentquark, exotic particles…• Advantages at Threshold : large , low multiplicity, pure initial state, S/B optimum

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Future development: BEPCIIFuture development: BEPCII

•Upgrade BEPC into two ring collider, increasing luminosity by a factor 100, rebuild detector to adapt high event rate and reduce sys. errors.

•Cost: 77M US$. •Installation is under way, and will be finished the installa

tion by the end of next years. Physics run by Spring 2007•Comparison with CESRc:

– Lumi. of BEPCII is a factor of 3-7 higher– Beam energy spread of BEPCII is about half → BEPCII statistics is about one order of magnitude hi

gher than CLEOc– Detector performance similar

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2. BEPCII: High Lumi. Double–ring Collider

Build new ring inside existing ring . Two half new rings and two half old rings cross at two IR’s, forming a double ring collider.

BEPCII (→Report by Prof. Wang)

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Event statistics at BESIII

Physics

Channel

Energy

(GeV)

Luminosity

(1033 cm–2s –1)

Events/year

J/ 3.097 0.6 1.0×1010

3.67 1.0 1.2×107

’ 3.686 1.0 3.0 ×109

D 3.77 1.0 2.5×107

Ds 4.03 0.6 1.0×106

Ds 4.14 0.6 2.0×106

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MDC: small cell & He gas xy=130 m sp/p = 0.5% @1GeV dE/dx=6%

EMCAL: CsI crystal E/E = 2.2% @1 GeV z = 0.5 cm/E

TOF: T = 100 ps Barrel 110 ps Endcap

Magnet: 1 T Super conducting

Muon ID: 9 layer RPC

Trigger: Tracks & ShowersPipelined; Latency = 2.4 ms

Data Acquisition: Event rate = 3 kHz Thruput ~ 50 MB/s

BESIII detectorBESIII detector

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Clean RoomWiring Machine

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BESIII SC magnet: winding test coilBESIII SC magnet: winding test coil

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EMC: CsI(Tl) crystals• 6300 crystals, (5.2x 5.2 – 6.4 x 6.4) x 28cm3

• PD readout, noise ~1100 ENC

• Energy resolution: 2.5%@1GeV

• Position resolution: 5mm@1GeV

• Tiled angle: theta ~ 1-3o, phi ~ 1.5o

• Minimum materials between crystals

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Schedule • May – Nov. 04: Linac upgrade. BES removed √• Dec.04 – June 05: SR running • July 05 – May 06: Long shutdown

– Remove existing ring – Infrastructure upgrade– Install two rings: half unit – test devices, install control system, alignment – Cryogenics system ready for SC devices, field mapping.

• June - Nov. 06: Tuning of machine + SR running • Dec.. 06 : BESIII detector moved into beam line• Jan. 06 – April 07 : Machine-detector tuning. • Physics run by May 2007

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Middle and Long Term Plan of IHEPMiddle and Long Term Plan of IHEP Chinese Government organizes a national wide effort to

make middle and long term plan for Science and technology.

IHEP is interested in several fields, specially for• Particle physics, • Particle Astrophysics• Accelerator technology• Synchrotron Radiation and applications• Big science facility Taking the advantage of BSRF and other facilities, IHE

P should extent research fields to protein structure, nano-science , material science…

→ Multiple Sciences Research Center

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Possible projects for Middle term Possible projects for Middle term • Charm physics @ BEPCII • Modulated hard X-ray telescope satellite• Neutrino experiments:

– Reactor neutrino to measure sin2213 – National underground Lab.– Very LBL oscillation experiment: J-Prac→ Beijing

• High power proton Accelerator: – Chinese Spallation Neutron Source 100KW→200 KW– Accelerator Driven Subcritical system

• Hard X-ray FEL• Convert BEPC into dedicated SR source after

BEPCII finished physics running• Intl. collaboration

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Experiment to measure sin2213 using Daya Bay reactor neutrino

• Daya Bay NPS is the best site in the world: – 60 km from Hong Kong, – 12GW now, 18 GW @ 2008– good mountain near NPP for near and far detectors.

• Near (300-500m) and Far detectors (1.5-1.8 km), modular, expect accuracy of 1% in sin2213 • Site study and tunnel design are underway • Conceptual design of civil construction is finished.• Optimize the selection of near/far cites• Detector R&D and MC simulation started•

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Daya Bay Power Plant: Best Site• 4 reactors in 2 clusters, 2.9 GW each, total: 11.6 GW• Two more cores with 5.8 GW expected by 2010

Daya Bay

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Daya BayNPP

Ling AoNPP

Daya Bay Near:D: 500 mOverburden: ~300 m.w.e.

Ling Ao Near:D: 500 mOverburden: ~220 m.w.e.

Far site:DDB: ~2200 mDLA: ~1800 mOverburden: ~1000 m.w.e.

Ling Dong NPP(under const.)

Total length of tunnel = 3422.5 m

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VLBL Experiment of J-PARC to Beijing

• V LBL experiment with 2000 - 4000 km is very interesting to study many important physics:– Sign of the difference of mass square– τappearance – CP violation of

• V LBL experiment from JHF to Beijing– Good tunnel: 20 km north of Beijing, near highway

to Great Wall – The tunnel is 560 m long, 34 meter wide, 13 meter

height , 150 m rock on top– Good infrastructure available– 2200 km to JHF with 9.5o dip angle

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CSNS: Next big Science FacilityCSNS: Next big Science Facility→ → RReport by Prof. Fueport by Prof. Fu

75keV 3.5 MeV 35MeV 70MeV (100μA) H- I.S. RFQ DTL Linac Separated DTL Linac

352MHz 352MHz

RFQ20mA

RCS

MEBT SDTL

Target and Experiment Area

LEBT

1.6 GeV, 25Hz62.5 μA →250μA

H- DTL

PB= 100kW

→ 400kW

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International Collaboration

Chinese Government supports Chinese HE physicists to work for HEP international collaborations

• LHC: • Linear Collider

– Accelerator: IHEP, Peking Univ., Tsinghua Univ. → Report by Prof. Gao

– Physics and detector :

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Remark

• China - CERN cooperation promotes Chinese HEP strongly.

• LHC exp. collaborations open new page in China-CERN cooperation.

• This workshop provides an unique opportunity for CERN, Chinese Funding agencies and physicists to discuss future program and interests in both sides.

• Many common interests in the future program in both sides → more active and close cooperation's.

Thanks !