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	Darkside-20k: a 20 tonne two-phase lar tpc for direct dark matter detection at lngs
	Aalseth, C. E.1; Acerbi, F.2,3; Agnes, P.4; Albuquerque, I. F. M.5; Alexander, T.1; Alici, A.6,7,8,9; Alton, A. K.10; Antonioli, P.8; Arcelli, S.8,9; Ardito, R.11,12
刊名	European physical journal plus
	2018-03-29
卷号	133期号:3页码:129
ISSN号	2190-5444
DOI	10.1140/epjp/i2018-11973-4
通讯作者	Renshaw, a. l.(arenshaw@uh.edu)
英文摘要	Building on the successful experience in operating the darkside-50 detector, the darkside collaboration is going to construct darkside-20k, a direct wimp search detector using a two-phase liquid argon time projection chamber (lar tpc) with an active (fiducial) mass of 23t (20t). this paper describes a preliminary design for the experiment, in which the darkside-20k lar tpc is deployed within a shield/veto with a spherical liquid scintillator veto (lsv) inside a cylindrical water cherenkov veto (wcv). this preliminary design provides a baseline for the experiment to achieve its physics goals, while further development work will lead to the final optimization of the detector parameters and an eventual technical design. operation of darkside-50 demonstrated a major reduction in the dominant ar-39 background when using argon extracted from an underground source, before applying pulse shape analysis. data from darkside-50, in combination with mc simulation and analytical modeling, shows that a rejection factor for discrimination between electron and nuclear recoils of > 3 x 10(9) is achievable. this, along with the use of the veto system and utilizing silicon photomultipliers in the lar tpc, are the keys to unlocking the path to large lar tpc detector masses, while maintaining an experiment in which less than < 0.1 events (other than v-induced nuclear recoils) is expected to occur within the wimp search region during the planned exposure. darkside-20k will have ultra-low backgrounds than can be measured in situ, giving sensitivity to wimp-nucleon cross sections of 1.2 x 10(-47) cm(2) (1.1 x 10(-46) cm(2)) for wimps of 1 tev/c(2) (10 tev/c(2)) mass, to be achieved during a 5yr run producing an exposure of 100 t yr free from any instrumental background.
WOS关键词	INTERACTING MASSIVE PARTICLES ; SOLAR-NEUTRINO EXPERIMENT ; DEL GRAN SASSO ; LIQUID-ARGON ; VAPOR-PRESSURE ; SCINTILLATION EFFICIENCY ; THERMODYNAMIC PROPERTIES ; ISOTOPIC LIQUIDS ; SEARCH ; BOREXINO
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000434467800001
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2177477
专题	高能物理研究所
通讯作者	Renshaw, A. L.
作者单位	1.Pacific Northwest Natl Lab, Richland, WA 99352 USA 2.Fdn Bruno Kessler, I-38123 Povo, Italy 3.Trento Inst Fundamental Phys & Applicat, I-38123 Povo, Italy 4.Univ Houston, Dept Phys, Houston, TX 77204 USA 5.Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo, Brazil 6.Ctr Fermi Museo Stor Fis, I-00184 Rome, Italy 7.Ctr Studi & Ric Enrico Fermi, I-00184 Rome, Italy 8.INFN Bologna, I-40126 Bologna, Italy 9.Univ Bologna, Dept Phys, I-40126 Bologna, Italy 10.Augustana Univ, Dept Phys, Sioux Falls, SD 57197 USA
推荐引用方式 GB/T 7714	Aalseth, C. E.,Acerbi, F.,Agnes, P.,et al. Darkside-20k: a 20 tonne two-phase lar tpc for direct dark matter detection at lngs[J]. European physical journal plus,2018,133(3):129.
APA	Aalseth, C. E..,Acerbi, F..,Agnes, P..,Albuquerque, I. F. M..,Alexander, T..,...&Zuzel, G..(2018).Darkside-20k: a 20 tonne two-phase lar tpc for direct dark matter detection at lngs.European physical journal plus,133(3),129.
MLA	Aalseth, C. E.,et al."Darkside-20k: a 20 tonne two-phase lar tpc for direct dark matter detection at lngs".European physical journal plus 133.3(2018):129.

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