Proceedings of the4th Annual Meeting of Particle Accelerator Society of Japan and the 32nd Linear Accelerator Meeting in Japan (August 1-3, 2007, Wako Japan)

STATUS OF THE PXR INSTRUMENTATION AT LEBRA,NIHON UNIVERSITY ∗

Yasushi Hayakawa† , Ken Hayakawa, Manabu Inagaki, Takao Kuwada, Keisuke Nakao,Kyoko Nogami, Takeshi Sakai, Isamu Sato, Yumiko Takahashi, Toshinari Tanaka

Laboratory for Electron Beam Research and Application (LEBRA), Nihon University,Narashinodai 7-24-1, Funabashi, 274-8501

AbstractThe X-ray beamline based on parametric X-ray radiation (PXR) has satisfactorily worked since its commissioning

at the Laboratory for Electron Beam Research and Application (LEBRA), Nihon University. At the PXR beamline,diffraction-enhanced imaging and absorption spectroscopy are main applications because of the coherence and themonochromaticity. To improve the quality of experiments, the cooling-water systems for the linac and the PXRtarget crystal were replaced. As the results, the stability of the PXR beam was drastically improved. The electronbeam size on the target and the time structure of the PXR intensity were observed in order to investigate the PXRproperty in detail. These results suggest that the PXR performance is restricted by the distortion of the target crystal.

LEBRA-PXRLEBRA-PXRLEBRA-PXRLEBRA-PXRLEBRA-PXR

1 .(LEBRA: Laboratory

for Electron Beam Research and Application)

X (PXR: parametric X-rayradiation) X100 MeVX 2004

PXR

X (XAFS: X-ray absorption finestructure) PXR

XAFS(DXAFS)

(DEI: diffraction enhanced imaging)PXR

[1] DXAFS DEIPXR

DXAFS DEI PXR

XDEI

PXR

(OTR:optical transition radiation)

PXR∗ ( )

(H.17 – H.19)† E-mail: yahayak@lebra.nihon-u.ac.jp

PXRPXR

PXR

2 .

LEBRA-PXRPXR

PC CPU

PXR±0.02

0.02 /3PXR

±0.01 [2]PXR

1±10 % ±2 %

DEI

[3]

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Proceedings of the4th Annual Meeting of Particle Accelerator Society of Japan and the 32nd Linear Accelerator Meeting in Japan (August 1-3, 2007, Wako Japan)

0 1000 20000.9

1

1.1

Time [ s ]

Nor

mal

ized

PX

R in

tens

ity

1: PXR PXR

2

3 . OTRLEBRA-PXR DXAFS DEI

PXR

OTRCCD

OTR

50 cmOTR

PXROTR

( 2)

CCD

e-beam

OTR

OTRPXR

2: OTR

4 .PXR

1 DX-AFS

[4]

XX

PXR

3 IC X(17.5 keV) PXR

1/γ30 %

XX 30 %

IP

X

IC7.3m2.2m

OTR

PXR 2

17.5keV

3:

4: X (17.5 keV)X

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Proceedings of the4th Annual Meeting of Particle Accelerator Society of Japan and the 32nd Linear Accelerator Meeting in Japan (August 1-3, 2007, Wako Japan)

OTR4

( :1.0 mm; :2.1 mm)X 150 μm

( :2.5 mm; :1.0 mm)

PXR

5: 2 PXRX

51.2 ∼ 1.3 mm CCD

1 mmPXR

2 PXR

PXR[5] 5 2

PXR(A)

(B)X

(C)X

PXRX

5 . XPXR 125 μm

( )

PXR

XDEI

6 .PXR

OTRPXR

X

PXR

X

Acknowledgments( : 17760058,

17560046) ( : 04-019 & 05-029, TS)

[1] Y. Hayakawa et al., “Advanced applications of PXR at LE-BRA, Nihon University”, Proceedings of SPIE Vol. 6634(2007), DOI: 10.1117/12.741898.

[2] T. Sakai et al., “”, in these proceedings (2007) FP68.

[3] I. Sato et al., “ ”,in these proceedings (2007) FO01.

[4] M. Inagaki et al., “ PXR”, in these proceedings (2007) TP56.

[5] K. Nogami et al., “ LEBRA-PXR ”,in these proceedings (2007) TP57.

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