Shielding calculation for the thickness of the SR facility safety shutter

SYNCHROTRON TECHNOLOGY AND APPLICATIONS

Shielding calculation for the thickness of the SR facility safety shutter

WEI Zhong-Yuan，

LUO Wen-Yun，

CHEN Tao

Nuclear Science and Techniques

Vol.17, No.4

pp.198-201

Published in print 20 Aug 2006

DOI：10.1016/S1001-8042(06)60037-7

CLC：TL594,TL71

40900

The safety shutter of the SR (synchrotron radiation) facility located at the front end of the facility is an indispensable component for radiation protection. Its thickness is decided by the gas bremsstrahlung produced in the SR facility storage ring by the interaction of electrons with the residual gas molecules in the vacuum chamber of the storage ring. In the calculation, the 3.5GeV, 300mA electron beam and a 15m long insertion-device straight section (0.133μPa) were taken into account, and the safety shutter was assumed to be located 12m away from the end of the straight section. The EGSnrc code based on the Monte-Carlo method and empirical formulas were used, respectively, to calculate the thickness to satisfy the shielding requirement of the safety shutter at the front end of the SR facility, and the results were compared and the availability of EGSnrc was proved.

SR facilitySafety shutterMonte-Carlo methodEGSnrc code

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