Neutron beam monitoring for time-of-flight facilities with gaseous detectors

被引：5
|
作者：
Aza, Eleni [1 ,2 ]
Magistris, Matteo [1 ]
Murtas, Fabrizio [1 ,3 ]
Puddu, Silvia [1 ,4 ]
Silari, Marco [1 ]
机构：
[1] CERN, CH-1211 Geneva 23, Switzerland
[2] AUTH, Dept Phys, Thessaloniki 54124, Greece
[3] LNF INFN, I-00044 Frascati, Italy
[4] Univ Bern, AEC LHEP, CH-3012 Bern, Switzerland
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2016年 / 806卷
关键词：
Neutron beam monitor; Gaseous Detector; Time-of-flight method; Beam profile;
D O I：
10.1016/j.nima.2015.09.054
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Triple Gas Electron Multipliers (GEM) for slow and fast neutrons were employed at the n_TOF facility at CERN as online beam imaging monitors and for energy spectra measurements via the time-of-flight technique. The detectors were exposed to the neutron spectrum ranging from thermal to 1 GeV, produced by spallation of 20 GeV/c protons in a lead target with a maximum intensity of 7.10(12) protons per pulse. The spectrum and the 2D count distribution of the neutron beam were measured and compared at two distances from the target, 185 m and 200 m. The detectors showed radiation hardness, linear response and the ability to monitor the beam profile online with high spatial resolution. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：14 / 20
页数：7
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