Evaluation of CdZnTe as neutron detector around medical accelerators

被引：15

作者：

Martin-Martin, A. ^{[1
]}

Iniguez, M. P. ^{[1
]}

Luke, P. N. ^{[2
]}

Barquero, R. ^{[3
]}

Lorente, A. ^{[4
]}

Morchon, J. ^{[1
]}

Gallego, E. ^{[4
]}

Quincoces, G. ^{[5
]}

Marti-Climent, J. M. ^{[5
]}

机构：

[1] Univ Valladolid, Dept Fis Teor Atom & Opt, E-47011 Valladolid, Spain

[2] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[3] Hosp Univ Rio Hortega, Valladolid, Spain

[4] Univ Politecn Madrid, Dept Ingn Nucl, Madrid, Spain

[5] Univ Navarra Clin, Pamplona, Spain

来源：

RADIATION PROTECTION DOSIMETRY | 2009年 / 133卷 / 04期

关键词：

CYCLOTRON VAULT ROOM; PET CYCLOTRON; SEMICONDUCTOR-DETECTORS; SPECTRA; LINAC; SPECTROMETER;

D O I：

10.1093/rpd/ncp038

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The operation of electron linear accelerators (LINACs) and cyclotrons can produce a mixed gamma-neutron field composed of energetic neutrons coming directly from the source and scattered lower energy neutrons. The thermal neutron detection properties of a non-moderated coplanar-grid CdZnTe (CZT) gamma-ray detector close to an 18 MV electron LINAC and an 18 MeV proton cyclotron producing the radioisotope F-18 for positron emission tomography are investigated. The two accelerators are operated at conditions producing similar thermal neutron fluence rates of the order of 10(4) cm(-2) s(-1) at the measurement locations. The counting efficiency of the CZT detector using the prompt 558 keV photopeak following Cd-113 thermal neutron capture is evaluated and a good neutron detection performance is found at the two installations.

引用

页码：193 / 199

页数：7

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