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25 April 2024

» arxiv » astro-ph/0411491

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WARP: a WIMP double phase Argon detector
R. Brunetti ; E. Calligarich ; M. Cambiaghi ; F. Carbonara ; F. Cavanna ; A. Cocco ; C. De Vecchi ; R. Dolfini ; A. Ereditato ; N. Ferrari ; G. Fiorillo ; L. Grandi ; G. Mangano ; A. Menegolli ; C. Montanari ; O. Palamara ; M. Prata ; A. Rappoldi ; G.L. Raselli ; M. Roncadelli ; M. Rossella ; C. Rubbia ; R. Santorelli ; C. Vignoli ;
Date:	17 Nov 2004
Subject:	astro-ph
Abstract:	The WARP programme for dark matter search with a double phase argon detector is presented. In such a detector both excitation and ionization produced by an impinging particle are evaluated by the contemporary measurement of primary scintillation and secondary (proportional) light signal, this latter being produced by extracting and accelerating ionization electrons in the gas phase. The proposed technique, verified on a 2.3 liters prototype, could be used to efficiently discriminate nuclear recoils, induced by WIMP’s interactions, and measure their energy spectrum. An overview of the 2.3 liters results and of the proposed 100 liters detector is shown.
Source:	arXiv, astro-ph/0411491
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