Near threshold pulse shape discrimination techniques in scintillating CsI(Tl) crystals
Wu, SC; Yue, Q; Lai, WP; Li, HB; Li, J; Lin, ST; Liu, Y; Singh, V; Wang, MZ; Wong, HT; Xin, B; Zhou, ZY; Li J(李金)
刊名NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
2004
卷号523期号:1-2页码:#REF!
关键词scintillation detectors data analysis neural networks
学科分类Instruments & Instrumentation; Nuclear Science & Technology; Physics; Spectroscopy
DOI10.1016/j.nima.2003.12.024
通讯作者Wong, HT (reprint author), Acad Sinica, Inst Phys, Taipei 11529, Taiwan.
文章类型Article
英文摘要There are recent interests with CsI(T1) scintillating crystals for Dark Matter experiments. The key merit is the capability to differentiate nuclear recoil (nr) signatures from the background beta/gamma-events due to ambient radioactivity on the basis of their different pulse shapes. One of the major experimental challenges is to perform such pulse shape analysis in the statistics-limited domain where the light output is close to the detection threshold. Using data derived from measurements with low-energy gamma's and nuclear recoils due to neutron elastic scatterings, it was verified that the pulse shapes between beta/gamma-events are different. Several methods of pulse shape discrimination (PSD) are studied, and their relative merits are compared. Full digitization of the pulse shapes is crucial to achieve good discrimination. Advanced software techniques with mean time, neural network and likelihood ratios give rise to satisfactory performance, and are superior to the conventional Double Charge method commonly applied at higher energies. PSD becomes effective starting at a light yield of about 20 photo-electrons. This corresponds to a detection threshold of about 5 keV electron-equivalence energy, or 40-50 keV recoil kinetic energy, in realistic experiments. (C) 2003 Elsevier B.V. All rights reserved.
类目[WOS]Instruments & Instrumentation ; Nuclear Science & Technology ; Physics, Particles & Fields ; Spectroscopy
收录类别SCI
WOS记录号WOS:000221079000008
引用统计
被引频次:12[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/226262
专题中国科学院高能物理研究所_实验物理中心_期刊论文
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Wu, SC,Yue, Q,Lai, WP,et al. Near threshold pulse shape discrimination techniques in scintillating CsI(Tl) crystals[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,2004,523(1-2):#REF!.
APA Wu, SC.,Yue, Q.,Lai, WP.,Li, HB.,Li, J.,...&李金.(2004).Near threshold pulse shape discrimination techniques in scintillating CsI(Tl) crystals.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,523(1-2),#REF!.
MLA Wu, SC,et al."Near threshold pulse shape discrimination techniques in scintillating CsI(Tl) crystals".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 523.1-2(2004):#REF!.
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