Magnetic storage of UCN for a measurement of the neutron lifetime
Magnetic storage of UCN for a measurement of the neutron lifetime
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DOI：
10.1016/j.nima.2009.07.071
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发表时间：
2009-12-01
影响因子：
1.4
通讯作者：
Zimmer, O.
中科院分区：
文献类型：
--
作者：
Ezhov, V. F.;Andreev, A. Z.;Zimmer, O.
我们介绍了为测量中子寿命而设计和建造的实验装置的现状，并描述了测量序列的详细情况。该装置的中心部件是一个由永磁体制成的磁捕获器。在固定储存时间后，在陷阱中存活的中子在提取后被计数，并且在储存期间持续监测陷阱的损失。这项技术在存储时间上的统计灵敏度约为2s，这构成了迄今为止发展起来的最灵敏的超冷中子磁捕获技术。(C)2009爱思唯尔B.V.保留所有权利。
We present the status of an experimental setup designed and built for the measurement of the neutron lifetime and we describe also details about the measuring sequence. The central element of the setup is a magnetic trap made of permanent magnets. Neutrons surviving in the trap after fixed storage times are counted after their extraction and the trap losses are continuously monitored during the storage periods. The technique has achieved a statistical sensitivity of about 2s on the storage time what constitutes the most sensitive magnetic trapping technique for ultra-cold neutrons developed so far. (C) 2009 Elsevier B.V. All rights reserved.