Simulation of Thermal Distortion of DCM Crystal Indirectly Cooled by LN<SUB>2</SUB>

WANG Na-Xiu; ZHU Yi; FU Yuan

Chinese Physics C> 2006, Vol. 30> Issue(8) : 802-805

Simulation of Thermal Distortion of DCM Crystal Indirectly Cooled by LN₂

Shanghai Institute of Applied Physics, CAS, Shanghai 201800, China

Abstract
HTML
Reference
Related

PDF

Abstract：
The simulation result of thermal distortion of DCM crystal indirectly cooled by liquid nitrogen(LN₂) at Shanghai synchrotron radiation facility (SSRF) has been reported. The source is U27 undulator. The maximum of power density at 24m is 60W/mm². We give the correlation of the slope error of crystal surface vs. Bragg angle, the convection film coefficient, the bulk temperature of LN₂ and total power absorbed by the first crystal, respectively. The slope error is less than 3 arcsec when the Bragg angle is less than 30°, the thickness of crystal is larger than 30mm, the current of storage ring is up to 400mA and cooled by 78K LN₂.

References

[1]

. Donald H. Bilderback, Andreas K. Freund, Gordon S.Knapp et al. J. Synchrotron Rad., 2000, 7: 53-602. ZHANG Lin, Lee Wah-Keat. J. Synchrotron Rad., 2003,10: 313-3193. Lee Wah-Keat, Kamel Fezzaa, Patricia Fernandez et al. J.Synchrotron Rad., 2001, 8: 22-254. ZHANG Lin. Proc. SPIE 1993. 1997, 223-2355. WANG Na-Xiu et al. Nuclear Technique, 2002, 25(6):401-407(in Chinese)(王纳秀等.核技术,2002,25(6):401—407)

Access

Get Citation

WANG Na-Xiu, ZHU Yi and FU Yuan. Simulation of Thermal Distortion of DCM Crystal Indirectly Cooled by LN₂[J]. Chinese Physics C, 2006, 30(8): 802-805.

WANG Na-Xiu, ZHU Yi and FU Yuan. Simulation of Thermal Distortion of DCM Crystal Indirectly Cooled by LN₂[J]. Chinese Physics C, 2006, 30(8): 802-805. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2005-06-29
Revised: 2006-03-01

Article Metric

Article Views(4258)
PDF Downloads(646)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Simulation of Thermal Distortion of DCM Crystal Indirectly Cooled by LN₂

Corresponding author: WANG Na-Xiu,

Shanghai Institute of Applied Physics, CAS, Shanghai 201800, China

Received Date: 2005-06-29
Accepted Date: 2006-03-01
Available Online: 2006-08-05

Abstract: The simulation result of thermal distortion of DCM crystal indirectly cooled by liquid nitrogen(LN₂) at Shanghai synchrotron radiation facility (SSRF) has been reported. The source is U27 undulator. The maximum of power density at 24m is 60W/mm². We give the correlation of the slope error of crystal surface vs. Bragg angle, the convection film coefficient, the bulk temperature of LN₂ and total power absorbed by the first crystal, respectively. The slope error is less than 3 arcsec when the Bragg angle is less than 30°, the thickness of crystal is larger than 30mm, the current of storage ring is up to 400mA and cooled by 78K LN₂.