Study of shielding design for SANS at CSNS

LIANG Tai-Ran; SHEN Fei; YIN Wen; YU Quan-Zhi; YU Chun-Xu; TAO Ju-Zhou; LIANG Tian-Jiao

doi:10.1088/1674-1137/38/7/078202

Chinese Physics C> 2014, Vol. 38> Issue(7) : 078202 DOI: 10.1088/1674-1137/38/7/078202

Study of shielding design for SANS at CSNS

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Abstract：
The small angle neutron scattering (SANS) instrument is presently being constructed at Chinese Spallation Neutron Source (CSNS) in China, and the biological shielding design is needed to prevent the instrument from causing excessive dose rates in accessible locations. In this paper, the study of shielding design for SANS that relies on Monte Carlo simulation is introduced. Beam line shielding calculations are performed considering both scenarios of closed versus open T0 chopper. The basic design scheme of the beam stop is discussed. The size of the T0 chopper rotor is also estimated.

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LIANG Tai-Ran, SHEN Fei, YIN Wen, YU Quan-Zhi, YU Chun-Xu, TAO Ju-Zhou and LIANG Tian-Jiao. Study of shielding design for SANS at CSNS[J]. Chinese Physics C, 2014, 38(7): 078202. doi: 10.1088/1674-1137/38/7/078202

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Received: 2013-12-09
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Study of shielding design for SANS at CSNS

Corresponding author: YIN Wen,

Received Date: 2013-12-09
Accepted Date: 1900-01-01
Available Online: 2014-07-05

Abstract: The small angle neutron scattering (SANS) instrument is presently being constructed at Chinese Spallation Neutron Source (CSNS) in China, and the biological shielding design is needed to prevent the instrument from causing excessive dose rates in accessible locations. In this paper, the study of shielding design for SANS that relies on Monte Carlo simulation is introduced. Beam line shielding calculations are performed considering both scenarios of closed versus open T0 chopper. The basic design scheme of the beam stop is discussed. The size of the T0 chopper rotor is also estimated.