ArDM: first results from underground commissioning

Badertscher, A.; Bay, F.; Bourgeois, Nicolas; Cantini, C.; Curioni, A.; Daniel, M. K.; Degunda, U.; Luise, S. Di; Epprecht, L.; Gendotti, A.; Horikawa, S.; Knecht, L.; Lussi, D.; Maire, G.; Montès, B.; Murphy, S.; Natterer, G.; Nikolics, K.; Nguyen, K.; Periale, L.; Ravat, S.; Resnati, F.; Romero, L.; Rubbia, A.; Santorelli, R.; Sergiampietri, F.; Sgalaberna, D.; Viant, T.; Wu, S.

doi:10.1088/1748-0221/8/09/c09005

Cited by 33 publications

(37 citation statements)

References 15 publications

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“…Another ton-scale LAr TPC is the ArDM [344] detector. This device was first tested at CERN and then was moved to the Canfranc underground laboratory in Spain where the commissioning took place in 2015.…”

Section: Liquid Noble-gas Detectorsmentioning

confidence: 99%

Dark matter direct-detection experiments

Undagoitia

Rauch

2015

J. Phys. G: Nucl. Part. Phys.

389

319

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Abstract.In the past decades, several detector technologies have been developed with the quest to directly detect dark matter interactions and to test one of the most important unsolved questions in modern physics. The sensitivity of these experiments has improved with a tremendous speed due to a constant development of the detectors and analysis methods, proving uniquely suited devices to solve the dark matter puzzle, as all other discovery strategies can only indirectly infer its existence. Despite the overwhelming evidence for dark matter from cosmological indications at small and large scales, a clear evidence for a particle explaining these observations remains absent. This review summarises the status of direct dark matter searches, focussing on the detector technologies used to directly detect a dark matter particle producing recoil energies in the keV energy scale. The phenomenological signal expectations, main background sources, statistical treatment of data and calibration strategies are discussed.arXiv:1509.08767v2 [physics.ins-det]

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Section: Liquid Noble-gas Detectorsmentioning

confidence: 99%

Dark matter direct-detection experiments

Undagoitia

Rauch

2015

J. Phys. G: Nucl. Part. Phys.

389

319

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“…Liquid argon (LAr) detectors have been widely used during recent years in several fields ranging from neutrino physics [1][2][3] to direct dark matter searches [4][5][6], given their particle identification and low energy threshold capabilities in large active volumes [7]. In particular a massive liquid argon time projection chamber (LAr-TPC) is the chosen design for the next generation of underground neutrino observatories recently proposed [8].…”

Section: Introductionmentioning

confidence: 99%

Dynamics of the ions in liquid argon detectors and electron signal quenching

Romero

Santorelli

Montès

2017

Astroparticle Physics

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A study of the dynamics of the positive charges in liquid argon has been carried out in the context of the future massive time projection chambers proposed for dark matter and neutrino physics.Given their small mobility coefficient in liquid argon, the ions spend a considerably longer time in the active volume with respect to the electrons. The positive charge density can be additionally increased by the injection, in the liquid volume, of the ions produced by the electron multiplying devices located in gas argon. The impact of the ion current on the uniformity of the field has been evaluated as well as the probability of the charge signal quenching due to the electron-ion recombination along the drift. The study results show some potential concerns for massive detectors with drift of many meters operated on surface.

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“…Ongoing dual-phase experiments include XENON100 [4,5], LUX [6,7] and PandaX-I [8,9] (all using LXe), as well as DarkSide-50 [10] (using LAr). While current dark matter detectors utilize up to a few hundred kg of LXe or LAr as their sensitive targets and probe the spinindependent WIMP-nucleon cross section down to 10 -45 -10 -46 cm 2 , ton-scale dual-phase experiments are already under construction or in different planning stages, e.g., XENON1T [11] (later to be upgraded to XENONnT), ArDM [12], LZ [13] and DarkSide G2 [10]; these are expected be sensitive to cross sections down to 10 -47 -10 -48 cm 2 . Multi-ton detectors, such as DARWIN [14], are foreseen to supersede these experiments in the next decade, reaching 10fold higher WIMP detection sensitivities, to the point where solar and atmospheric neutrinos will become the dominant background through coherent neutrino-nucleus scattering.…”

Section: Introductionmentioning

confidence: 99%

Liquid Hole Multipliers: bubble-assisted electroluminescence in liquid xenon

Arazi¹,

Erdal²,

Coimbra³

et al. 2015

J. Inst.

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In this work we discuss the mechanism behind the large electroluminescence signals observed at relatively low electric fields in the holes of a Thick Gas Electron Multiplier (THGEM) electrode immersed in liquid xenon. We present strong evidence that the scintillation light is generated in xenon bubbles trapped below the THGEM holes. The process is shown to be remarkably stable over months of operation, providing -under specific thermodynamic conditions -energy resolution similar to that of present dual-phase liquid xenon experiments. The observed mechanism may serve as the basis for the development of Liquid Hole Multipliers (LHMs), capable of producing local charge-induced electroluminescence signals in large-volume single-phase noble-liquid detectors for dark matter and neutrino physics experiments.

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ArDM: first results from underground commissioning

Cited by 33 publications

References 15 publications

Dark matter direct-detection experiments

Dark matter direct-detection experiments

Dynamics of the ions in liquid argon detectors and electron signal quenching

Liquid Hole Multipliers: bubble-assisted electroluminescence in liquid xenon

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