Simulation of the response of the Solid State Neutron Detector for the European Spallation Source

Simulation of the response of the Solid State Neutron Detector for the European Spallation Source
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欧洲散裂源固态中子探测器响应模拟

DOI:
10.1016/j.nima.2021.165174
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发表时间:
2021
期刊:
Accelerators, Spectrometers, Detectors and Associated Equipment
影响因子:
--
通讯作者:
Boyd L
Boyd L
中科院分区:
--
文献类型:
--
作者:
Boyd L

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正在为欧洲散裂源的中子散射测量而开发的固态中子探测器的特性已使用基于 Geant4 的计算机代码进行了模拟。该代码模拟了探测器的 6Li 掺杂闪烁玻璃中热中子和电离辐射的相互作用、闪烁光的产生以及光学闪烁光子通过闪烁体传输到所附多阳极光电倍增器的光电阴极的过程。比较了影响光学-光子传输的因素,例如表面光洁度、玻璃板的像素化、前反射器和光学耦合介质的提供。将探测器响应的预测与中子和伽马射线源、准直阿尔法源以及 2.5 MeV 质子和氘核的精细准直光束进行的测量进行比较。
The characteristics of the Solid-state Neutron Detector, under development for neutron-scattering measurements at the European Spallation Source, have been simulated with a Geant4-based computer code. The code models the interactions of thermal neutrons and ionising radiation in the6Li-doped scintillating glass of the detector, the production of scintillation light and the transport of optical, scintillation photons through the scintillator, en route to the photocathode of the attached multi-anode photomultiplier. Factors which affect the optical-photon transport, such as surface finish, pixelation of the glass sheet, provision of a front reflector and optical coupling media are compared. Predictions of the detector response are compared with measurements made with neutron and gamma-ray sources, a collimated alpha source and finely collimated beams of 2.5 MeV protons and deuterons.
基于有机基质中 6Li 玻璃闪烁体颗粒的中子探测器中的光传播
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