In-vacuum X-ray helical undulator for high flux beamline at SPring-8

被引:22
作者
Hara, T
Tanaka, T
Seike, T
Bizen, T
Maréchal, X
Kohda, T
Inoue, K
Oka, T
Suzuki, T
Yagi, N
Kitamura, H
机构
[1] Inst Phys & Chem Res, SPring 8, Harima Inst, Mikazuki, Hyogo 6795148, Japan
[2] JASRI, SPring 8, Mikazuki, Hyogo 6795198, Japan
[3] SSMC, Osaka 6188555, Japan
关键词
insertion device; undulator; in-vacuum undulator; in-vacuum helical undulator; helical undulator;
D O I
10.1016/S0168-9002(01)00265-0
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
An in-vacuum X-ray helical undulator has been developed for a high flux beamline (BL40XU) of SPring-8. Since BL40XU is not equipped with a monochromator in order to provide high photon flux, on-axis fundamental radiation from the helical undulator is directly used for user experiments after being focused by horizontal and vertical mirrors. The energy resolution available at the beamline is determined by the undulator spectrum and the front end physical aperture. Compared to a conventional beamline of SPring-8 with a crystal monochromator, the available photon flux is higher by two orders. Since a specific polarization state is not requested from the user experiments, there is no phasing mechanics on the undulator. The magnet structure is newly designed to obtain better magnetic field performance. The measured spectral bandwidth shows a good agreement with the expected one. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:165 / 168
页数:4
相关论文
共 5 条
[1]   SPring-8 twin helical undulator [J].
Hara, T ;
Tanaka, T ;
Tanabe, T ;
Marechal, XM ;
Kumagai, K ;
Kitamura, H .
JOURNAL OF SYNCHROTRON RADIATION, 1998, 5 :426-427
[2]   SPring-8 in-vacuum undulator beam test at the ESRF [J].
Hara, T ;
Tanaka, T ;
Tanabe, T ;
Marechal, XM ;
Kitamura, H ;
Elleaume, P ;
Morrison, B ;
Chavanne, J ;
Van Vaerenbergh, P ;
Schmidt, D .
JOURNAL OF SYNCHROTRON RADIATION, 1998, 5 :406-408
[3]  
SUZUKI M, 2000, UNPUB J SYNCHROTR RA
[4]  
SUZUKI M, 1998, JPN J APPL PHYS, V37, P61488
[5]   Construction of a vortical undulator at SPring-8 [J].
Tanaka, T ;
Marechal, XM ;
Hara, T ;
Tanabe, T ;
Kitamura, H .
JOURNAL OF SYNCHROTRON RADIATION, 1998, 5 :414-416