Near threshold pulse shape discrimination techniques in scintillating CsI(Tl) crystals

	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
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
通讯作者	Wong, HT (reprint author), Acad Sinica, Inst Phys, Taipei 11529, Taiwan.
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.
学科主题	Instruments & Instrumentation; Nuclear Science & Technology; Physics; Spectroscopy
类目[WOS]	Instruments & Instrumentation ; Nuclear Science & Technology ; Physics, Particles & Fields ; Spectroscopy
收录类别	SCI
WOS记录号	WOS:000221079000008
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/226262]
专题	高能物理研究所_实验物理中心
推荐引用方式 GB/T 7714	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!.