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Design optimization of MACHe3, a project of superfuid He3 detector for direct Dark Matter search

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arxiv astro-ph/0002303 v1 pith:YHPFEJ74 submitted 2000-02-15 astro-ph

Design optimization of MACHe3, a project of superfuid He3 detector for direct Dark Matter search

classification astro-ph
keywords cellcellsdetectorsuperfluidconfigurationsdarkdesigndirect
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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MACHe3 (MAtrix of Cells of superfluid He3) is a project of a new detector for direct Dark Matter (DM) search. A cell of superfluid He3 has been developed and the idea of using a large number of such cells in a high granularity detector is proposed. This paper presents, after a brief description of the superfluid He3 cell, the simulation of the response of different matrix configurations allowing to define an optimum design as a function of the number of cells and the volume of each cell. The background rejection, for several configurations, is presented both for neutrons and gamma-rays of various kinetic energies.

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