Improving the effectiveness of a low-energy Compton suppression system

被引：18

作者：

Britton, R. ^{[1
]}

Burnett, J. L. ^{[2
]}

Davies, A. V. ^{[2
]}

Regan, P. H. ^{[1
]}

机构：

[1] Univ Surrey, Guildford GU2 7XH, Surrey, England

[2] AWE, Reading RG7 4PR, Berks, England

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2013年 / 729卷

基金：

英国工程与自然科学研究理事会;

关键词：

Gamma spectroscopy; Coincidence; Environmental monitoring; Compton suppression; HPGE;

D O I：

10.1016/j.nima.2013.06.111

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A novel method for collecting and processing coincidence data from a Compton Suppressed Low Energy Photon Spectrometer (LEPS) is presented, greatly simplifying the current setup and extending the suppression abilities of the system. Offline analysis is used, eliminating the need to discard coincidence data when vetoing coincident events with fast-timing electronics. Additional coincident events are identified that are usually missed, and which represent interactions in the active NaI(Tl) shield prior to an interaction in the LEPS detector. By suppressing these events, the Compton Suppression factor was improved by 144% for the 661.66 keV decay line in a Cs-137 source. The geometry used for this particular Compton suppression system is highly sensitive to these effects, however similar event profiles are expected in all coincidence systems. (c) 2013 Elsevier B.V. All rights reserved.

引用

页码：64 / 68

页数：5

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