Ultracold neutron detector for neutron lifetime measurements

被引：3
|
作者：
Andreev, V. [1 ]
Vassiljev, A. [1 ]
Ivanov, E. [1 ]
Ilyin, D. [1 ,2 ]
Krivshich, A. [1 ]
Serebrov, A. [1 ]
机构：
[1] Petersburg Nucl Phys Inst, Gatchina 188300, Russia
[2] St Petersburg State Univ, 7-9 Univ Skaya Nab, St Petersburg 199034, Russia
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2017年 / 845卷
基金：
俄罗斯科学基金会;
关键词：
Neutron lifetime; Ultracold neutron detector;
D O I：
10.1016/j.nima.2016.05.005
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The gas-filled detector of ultracold neutrons has been designed and constructed for the spectrometer of the neutron lifetime measurements at the ILL, Grenoble, France. The detector has been successfully tested and is currently being used at this spectrometer. We could show that minimization of the "wall" effect is a key factor to ensure efficient background suppression and to maximize the detection efficiency. This effect is primarily related to the composition of the gas mixture, which crucially depends on the neutron velocity spectrum. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：548 / 551
页数：4
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