The Methods for Direct Detection of WIMP with Mass <0.5 GeV
2015
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 .
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