Measurement of the liquid argon energy response to nuclear and electronic recoils

被引：44

作者：

Agnes, P. ^{[1
,2
]}

Dawson, J. ^{[2
]}

De Cecco, S. ^{[3
]}

Fan, A. ^{[4
]}

Fiorillo, G. ^{[5
,6
]}

Franco, D. ^{[2
]}

Galbiati, C. ^{[7
]}

Giganti, C. ^{[3
]}

Johnson, T. N. ^{[8
]}

Korga, G. ^{[1
,9
]}

Kryn, D. ^{[2
]}

Lebois, M. ^{[10
]}

Mandarano, A. ^{[9
,11
]}

Martoff, C. J. ^{[12
]}

Navrer-Agasson, A. ^{[3
]}

Pantic, E. ^{[8
]}

Qi, L. ^{[10
]}

Razeto, A. ^{[9
]}

Renshaw, A. L. ^{[1
]}

Riffard, Q. ^{[2
]}

Rossi, B. ^{[6
]}

Savarese, C. ^{[9
,11
]}

Schlitzer, B. ^{[8
]}

Suvorov, Y. ^{[4
,9
]}

Tonazzo, A. ^{[2
]}

Wang, H. ^{[4
]}

Wang, Y. ^{[4
]}

Watson, A. W. ^{[12
]}

Wilson, J. N. ^{[10
]}

机构：

[1] Univ Houston, Dept Phys, Houston, TX 77204 USA

[2] Univ Paris Diderot, Sorbonne Paris Cite, Obs Paris, CEA,Irfu,APC,CNRS,IN2P3, F-75205 Paris, France

[3] Univ Paris Diderot, Sorbonne Univ, LPNHE Paris, CNRS,IN2P3, F-75252 Paris, France

[4] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[5] Univ Federico II, Dept Phys, I-80126 Naples, Italy

[6] Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy

[7] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA

[8] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA

[9] Lab Nazl Gran Sasso, I-67010 Assergi, AQ, Italy

[10] Inst Phys Nucl, F-91406 Orsay, France

[11] Gran Sasso Sci Inst, I-67100 Laquila, Italy

[12] Temple Univ, Dept Phys, Philadelphia, PA 19122 USA

来源：

PHYSICAL REVIEW D | 2018年 / 97卷 / 11期

基金：

美国国家科学基金会;

关键词：

NEUTRON SOURCE;

D O I：

10.1103/PhysRevD.97.112005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A liquid argon time projection chamber, constructed for the Argon Response to Ionization and Scintillation (ARIS) experiment, is exposed to the highly collimated and quasimonoenergetic LICORNE neutron beam at the Institut de Physique Nucleaire d'Orsay (IPNO) in order to study the scintillation response to nuclear and electronic recoils. An array of liquid scintillator detectors, arranged around the apparatus, tag scattered neutrons and select nuclear recoil energies in the [7, 120] keV energy range. The relative scintillation efficiency of nuclear recoils is measured to high precision at null field, and the ion-electron recombination probability is extracted for a range of applied electric fields. Single-scattered Compton electrons, produced by gammas emitted from the deexcitation of Li-7* in coincidence with the beam pulse, along with calibration gamma sources, are used to extract the recombination probability as a function of energy and electron drift field. The ARIS results are compared with three recombination probability parametrizations (Thomas-Imel, Doke-Birks, and PARIS), allowing for the definition of a fully comprehensive model of the liquid argon response to nuclear and electronic recoils down to the few-keV range. The constraints provided by ARIS to the liquid argon response at low energy allow the reduction of systematics affecting the sensitivity of dark matter search experiments based on liquid argon.

引用

页数：14

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