Passive magnetic cylindrical shielding at gauss-range static fields
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- 作者：E. Calvo ; M. Cerrada ; I. Gil-Botella ; C. Palomares ; I. Rodrí ; guez ; F. Toral ; A. Verdugo
- 关键词：Passive magnetic shielding ; Cylindrical shielding ; Photomultiplier ; Low magnetic field ; Helmholtz coils ; Mumetal ; Double Chooz ; Reactor neutrino experiments
- 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
- 出版年：2009
- 出版时间：11 March 2009
- 年：2009
- 卷：600
- 期：3
- 页码：560-567
- 全文大小：1007 K
文摘
A study has been performed in order to find the optimal solution for the magnetic shielding of the 10 in. photomultipliers which will be used in the Double Chooz neutrino experiment under a very low magnetic field (less than 2 G). The results obtained with analytical and numerical calculations are compared with measurements made using test prototypes of several magnetic materials, with different dimensions and from different manufacturers. An exhaustive analysis of the magnetic materials was needed to understand the observed disagreement between calculations and test results obtained at low field values.