An Optimized Design of Single-Channel Beta-Gamma Coincidence Phoswich Detector by Geant4 Monte Carlo Simulations

被引：2

作者：

Zhang, Weihua ^{[1
]}

Mekarski, Pawel ^{[1
]}

Bean, Marc ^{[1
]}

Yi, Jing ^{[1
]}

Ungar, Kurt ^{[1
]}

机构：

[1] Hlth Canada, Radiat Protect Bur, Ottawa, ON K1A 1C1, Canada

来源：

SCIENCE AND TECHNOLOGY OF NUCLEAR INSTALLATIONS | 2011年 / 2011卷

关键词：

RADIOACTIVE XENON; SYSTEM;

D O I：

10.1155/2011/741396

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

An optimized single-channel phoswich well detector design has been proposed and assessed in order to improve beta-gamma coincidence measurement sensitivity of xenon radioisotopes. This newly designed phoswich well detector consists of a plastic beta counting cell (BC404) embedded in a CsI(Tl) crystal coupled to a photomultiplier tube. The BC404 is configured in a cylindrical pipe shape to minimise light collection deterioration. The CsI(Tl) crystal consists of a rectangular part and a semicylindrical scintillation part as a light reflector to increase light gathering. Compared with a PhosWatch detector, the final optimized detector geometry showed 15% improvement in the energy resolution of a Xe-131m 129.4 keV conversion electron peak. The predicted betagamma coincidence efficiencies of xenon radioisotopes have also been improved accordingly.

引用

页数：5

共 10 条

[1] GEANT4-a simulation toolkit [J].

Agostinelli, S ;

Allison, J ;

Amako, K ;

Apostolakis, J ;

Araujo, H ;

Arce, P ;

Asai, M ;

Axen, D ;

Banerjee, S ;

Barrand, G ;

Behner, F ;

Bellagamba, L ;

Boudreau, J ;

Broglia, L ;

Brunengo, A ;

Burkhardt, H ;

Chauvie, S ;

Chuma, J ;

Chytracek, R ;

Cooperman, G ;

Cosmo, G ;

Degtyarenko, P ;

Dell'Acqua, A ;

Depaola, G ;

Dietrich, D ;

Enami, R ;

Feliciello, A ;

Ferguson, C ;

Fesefeldt, H ;

Folger, G ;

Foppiano, F ;

Forti, A ;

Garelli, S ;

Giani, S ;

Giannitrapani, R ;

Gibin, D ;

Cadenas, JJG ;

González, I ;

Abril, GG ;

Greeniaus, G ;

Greiner, W ;

Grichine, V ;

Grossheim, A ;

Guatelli, S ;

Gumplinger, P ;

Hamatsu, R ;

Hashimoto, K ;

Hasui, H ;

Heikkinen, A ;

Howard, A .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 506 (03) :250-303

[2] Single-channel beta-gamma coincidence detection of radioactive xenon using digital pulse shape analysis of phoswich detector signals [J].

Hennig, W ;

Tan, H ;

Warburton, WK ;

McIntyre, JI .

IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 2006, 53 (02) :620-624

[3]

Hennig W., 2008, MONITORING RES REV G

[4]

Innocente V., 2003, CERN VERSION1 0

[5] Monte Carlo simulation of a PhosWatch detector using Geant4 for xenon isotope beta-gamma coincidence spectrum profile and detection efficiency calculations [J].

Mekarski, P. ;

Zhang, W. ;

Ungar, K. ;

Bean, M. ;

Korpach, E. .

APPLIED RADIATION AND ISOTOPES, 2009, 67 (10) :1957-1963

[6]

Popov Y. S., 2000, CTBTOSIWS6PR15

[7] Beta-gamma counting system for Xe fission products [J].

Reeder, PL ;

Bowyer, TW ;

Perkins, RW .

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 1998, 235 (1-2) :89-94

[8] SAUNA - a system for automatic sampling, processing, and analysis of radioactive xenon [J].

Ringbom, A ;

Larson, T ;

Axelsson, A ;

Elmgren, K ;

Johansson, C .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 508 (03) :542-553

[9] Notes on radioxenon measurements for CTBT verification purposes [J].

Saey, PRJ ;

De Geer, LE .

APPLIED RADIATION AND ISOTOPES, 2005, 63 (5-6) :765-773

[10]

Zhang W., 2010, APPL RAD ISOTOPES

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