ULTIMA: Magnetic field dependence of the calibration factor

被引：2

作者：

Elbs, Johannes ^{[1
]}

Bunkov, Yuriy M. ^{[1
]}

Collin, Eddy ^{[1
]}

Godfrin, Henri ^{[1
]}

Suvorova, Olga ^{[2
]}

Winkelmann, Clemens B. ^{[1
]}

机构：

[1] CNRS UJF, Inst Neel, F-38042 Grenoble, France

[2] RAS, Inst Nucl Res, Moscow 117312, Russia

来源：

JOURNAL OF LOW TEMPERATURE PHYSICS | 2008年 / 151卷 / 3-4期

关键词：

superfluid He-3; bolometry; magnetic field dependence;

D O I：

10.1007/s10909-008-9756-z

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

ULTIMA is a project which proposes to use superfluid He-3 as a sensitive medium for direct dark matter search. In this paper we report on new, detailed calibrations of our bolometric cells as a function of the magnetic field. An influence on the order of 20% on the peak height after an energy deposition is observed for magnetic fields up to 330 mT. Simultaneous measurements of neutron capture and heater events, releasing both a well defined energy, show that the effect is similar for both, and that it is possible to maintain a good calibration by an appropriate correction.

引用

页码：860 / 864

页数：5

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