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

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

2000-02-15

arxiv.org/abs/astro-ph/0002303v1

Nucl.Instrum.Meth.A455:554-563,2000

Astronomy and Astrophysics

Astrophysics

20 pages, 12 figures

Scientific paper

10.1016/S0168-9002(00)00540-4

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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