Cooling of double crystal monochromator with sagittal focus at SSRF

SYNCHROTRON SCIENCE AND TECHNOLOGY

Cooling of double crystal monochromator with sagittal focus at SSRF

WANG Naxiu，

LIU Shilei，

XU Zhongmin，

BIAN Fenggang

Nuclear Science and Techniques

Vol.21, No.2

pp.65-68

Published in print 20 Apr 2010

DOI：10.13538/j.1001-8042/nst.21.65-68

31401

In SSRF, the design of 1st crystal cooling geometry of double crystal monochromator with sagittal focus is mainly reported by China. Our simulation indicates that the broadening of the full width at half maximum of the rocking curve of the double crystal monochromator induced by the heat load is about 3.7 μrad, and is in agreement with the experimental value of 5 μrad. Our scheme showed that the photon flux is reliably linear with electron current of the storage ring, which is extracted from the monochromator.

Double crystal monochromatorDirect coolingThermal distortionRocking curveSimulation

References

[1]

Oversluizen T. Rev Sci Instum, 1989, 7: 1493-1500.

[2]

Bilderback D H, Freund A K, Knapp G S, et al. J. Syn-chrotron Rad, 2000, 7: 53-60.

[3]

Mochizuki T, Zhang X, Sugiyama H, et al. Rev Sci Instrum 1995, 66: 2167-2170.

[4]

Wang J.

SSRF test report of BL16B: Shanghai Institute of Applied Physics

, Shanghai, China, 2009. (in Chinese)

Baidu Scholar

Google Scholar

[5]

Release 11.0 Documentation for ANSYS: Swanson Analysis System Inc., Champain, Illinois, USA, 2007.

[6]

Artemev A, Artemiev N, Busseto E, et al. Nucl Instrum Meth Phys Res A, 467-468: 380-383.

[7]

ZHANG L, Lee W K, Michael W, et al. J Synchrotron Rad, 2003, 10: 313-319.

[8]

Lee W K, Fernandez P B, Khounsary A, et al. SPIE, 1997, 3151: 208-215.

[9]

Oberta P, Ac V, Hrdy J. J Synchrotron Rad, 2008, 15: 543-548.