McStas and Scatter Logger driven calculations of prompt gamma shielding for neutron guides
Peer reviewed, Journal article
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Original versionJournal of Neutron Research. 2019, 21 (3-4), 79-85. 10.3233/JNR-190123
McStas ScatterLogger component bundle was adapted for evaluating a contribution to dose rate around neutron guides arising from prompt gamma radiation accompanying neutron capture in the supermirror guide coating upon specular reflection. Thickness of typical shielding materials needed to reduce this contribution to the desired level can be now evaluated directly from running a ray-tracing simulation of the instrument in McStas. An overview of the corresponding modifications to the existing McStas components and description of the newly written supplementary ones is given together with examples and use instructions.