The Methods for Direct Detection of WIMP with Mass ≤ 0.5 GeV/c&lt;sup&gt;2&lt;/sup&gt;

B M Ovchinnikov,I I Tkachev,V V Parusov

doi:10.13189/ujpa.2015.090401

The Methods for Direct Detection of WIMP with Mass ≤ 0.5 GeV/c<sup>2</sup>

B M Ovchinnikov, I I Tkachev + Show 1 more

Open Access

https://doi.org/10.13189/ujpa.2015.090401

Copy DOI

Abstract

The chamber for direct detection of WIMP with mass ≤ 0.5 Gev/c 2 was developed. The chamber is filled with gas mixture Ne+10%H2 (0-1bar)+0,15ppm Ge(CH3)4. For events detections used GEM+pin-anode , which provides the energy threshold about eV. The electron background is suppressed owing to photosensitive addition Ge(CH3)4 . It is proposed also for direct detection of WIMP the liquid argon chamber with H2 dissolved in liquid argon at a concentration 100ppm+0,015ppm Ge(CH3)4 .

Highlights

Introduction systemGEM+ pin –anode with 10%H2 addition and Kampl=5∙107 [5]
The spherical proportional detector was developed for search the low mass WIMP [3]
This detector was filled with H2 or Ne and has the energy threshold about 100 eV

Summary

Introduction

Introduction systemGEM+ pin –anode with 10%H2 addition and Kampl=5∙107 [5]. The concentration H2 in liquid Ar is equal about 100 ppm, this allows to detect the low mass WIMP (≤0.5GeV) because the concentration H2 is 100 time more in [1].4. Keywords Search the Low Mass WIMP, Metallic 1. Introduction system GEM+ pin –anode with 10%H2 addition and Kampl=5∙107 [5]. The concentration H2 in liquid Ar is equal about 100 ppm, this allows to detect the low mass WIMP (≤0.5GeV) because the concentration H2 is 100 time more in [1].

Results

Conclusion