Universal Journal of Physics and Application Vol. 7(2), pp. 66 - 70
DOI: 10.13189/ujpa.2013.010203
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The Experiment for Direct Dark Matter Searches with Liquid Ar Detector

B.M. Ovchinnikov^1,*, Yu.B. Ovchinnikov², V.V. Parusov^1
1 Institute for Nuclear Research of Russian Academy of Sciences, Moscow, Russia
² National Physical Laboratory, Teddington, Middlesex, TW11 0LW, UK

ABSTRACT

A novel experiment for direct searches of Dark Matter with a liquid argon double-phase chamber with a mass of liquid Ar up to 10⁴ tons is proposed. To suppress the β-, γ- and n_0- backgrounds, the comparison of scintillation and ionization signals for every event is suggested. The addition to liquid Ar of photosensitive Ge(CH₃)₄ (0.15ppm) and the suppression of the triplet component of the scintillation signals by the addition of 100ppm of Xe ensures the detection of scintillation signals with 50% efficiency and provides a complete suppression of the electron background. Highly stable and reliable GEM detectors with pin-anodes are developed for the detection of photoelectrons and the bump of ionization electrons.

KEYWORDS
WIMPs Search with two-phase Ar-chamber with 50% Efficiency Scintillation Detecting

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] B.M. Ovchinnikov , Yu.B. Ovchinnikov , V.V. Parusov , "The Experiment for Direct Dark Matter Searches with Liquid Ar Detector," Universal Journal of Physics and Application, Vol. 7, No. 2, pp. 66 - 70, 2013. DOI: 10.13189/ujpa.2013.010203.

(b). APA Format:
B.M. Ovchinnikov , Yu.B. Ovchinnikov , V.V. Parusov (2013). The Experiment for Direct Dark Matter Searches with Liquid Ar Detector. Universal Journal of Physics and Application, 7(2), 66 - 70. DOI: 10.13189/ujpa.2013.010203.