Organic scintillator detector response simulations with DRiFT

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• 作者：M.T. Andrews ; ^{madison@lanl.gov" class="auth_mail" title="E-mail the corresponding author} ; C.R. Bates ; E.A. McKigney ; C.J. Solomon ; A. Sood
• 关键词：DRiFT ; Scintillator ; Detector response function ; MCNP®
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2016
• 出版时间：11 September 2016
• 年：2016
• 卷：830
• 期：Complete
• 页码：466-472
• 全文大小：901 K

文摘

This work presents the organic scintillation simulation capabilities of DRiFT, a post-processing Detector Response Function Toolkit for MCNP^®${\mathrm{MCNP}}^{\circledR }$ output. DRiFT is used to create realistic scintillation detector response functions to incident neutron and gamma mixed-field radiation. As a post-processing tool, DRiFT leverages the extensively validated radiation transport capabilities of MCNP^®6${\mathrm{MCNP}}^{\circledR }6$, which also provides the ability to simulate complex sources and geometries. DRiFT is designed to be flexible, it allows the user to specify scintillator material, PMT type, applied PMT voltage, and quenching data used in simulations. The toolkit's capabilities, which include the generation of pulse shape discrimination plots and full-energy detector spectra, are demonstrated in a comparison of measured and simulated neutron contributions from ²⁵²Cf and PuBe, and photon spectra from ²²Na and ²²⁸Th sources. DRiFT reproduced energy resolution effects observed in EJ-301 measurements through the inclusion of scintillation yield variances, photon transport noise, and PMT photocathode and multiplication noise.