Commissioning of the ArDM experiment at the Canfranc underground laboratory: first steps towards a tonne-scale liquid argon time projection chamber for Dark Matter searches

Calvo, J.; Cantini, C.; Daniel, M. K.; Luise, S. Di; Gendotti, A.; Horikawa, S.; Montès, B.; Mu, Wei; Murphy, S.; Natterer, G.; Nguyen, K.; Periale, L.; Yu, Quan; Radics, B.; Regenfus, C.; Romero, L.; Rubbia, A.; Santorelli, R.; Sergiampietri, F.; Viant, T.; Wu, S.

doi:10.1088/1475-7516/2017/03/003

Cited by 45 publications

(32 citation statements)

References 31 publications

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“…The ambient temperature getter used during Run-II is the MicroTorr MC4500-902FV model from SAES. As is well known, see for example [25] and section 3 in this work, the radon emanation of this ambient temperature getter cartridge is intolerably high for rare event searches. [26].…”

Section: The Next-white Detector At the Lscsupporting

confidence: 58%

Measurement of radon-induced backgrounds in the NEXT double beta decay experiment

Novella¹,

Palmeiro²,

Simón³

et al. 2018

J. High Energ. Phys.

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The measurement of the internal 222 Rn activity in the NEXT-White detector during the so-called Run-II period with 136 Xe-depleted xenon is discussed in detail, together with its implications for double beta decay searches in NEXT. The activity is measured through the alpha production rate induced in the fiducial volume by 222 Rn and its alpha-emitting progeny. The specific activity is measured to be (38.1 ± 2.2 (stat.) ± 5.9 (syst.)) mBq/m 3. Radon-induced electrons have also been characterized from the decay of the 214 Bi daughter ions plating out on the cathode of the time projection chamber. From our studies, we conclude that radon-induced backgrounds are sufficiently low to enable a successful NEXT-100 physics program, as the projected rate contribution should not exceed 0.1 counts/yr in the neutrinoless double beta decay sample.

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Section: The Next-white Detector At the Lscsupporting

confidence: 58%

Measurement of radon-induced backgrounds in the NEXT double beta decay experiment

Novella¹,

Palmeiro²,

Simón³

et al. 2018

J. High Energ. Phys.

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“…Direct methods of WIMP detection are based on registration of ionization, scintillation or heat release caused by recoil nucleus embedded in the material of the detector; the nucleus could be in an excited state. At present, most sensitive direct experiments apply a variety of detection techniques for WIMP search: semiconductor detectors [83,84,85,86,87], noble gases based detectors [88,89,90,91,92,93,94,95], bubble chambers [96], cryogenic bolometers [97,98,99]. Crystal scintillators are applied in conventional scintillation detectors [100,101,102,82,103] and in cryogenic scintillating bolometers, that use simultaneous registration of heat and light signals from crystal scintillators to reject background caused by electrons [104,105].…”

Section: Dark Mattermentioning

confidence: 99%

Radioactive contamination of scintillators

Danevich

Tretyak

2018

Int. J. Mod. Phys. A

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Low counting experiments (search for double β decay and dark matter particles, measurements of neutrino fluxes from different sources, search for hypothetical nuclear and subnuclear processes, low background α, β, γ spectrometry) require extremely low background of a detector. Scintillators are widely used to search for rare events both as conventional scintillation detectors and as cryogenic scintillating bolometers. Radioactive contamination of a scintillation material plays a key role to reach low level of background. Origin and nature of radioactive contamination of scintillators, experimental methods and results are reviewed. A programme to develop radiopure crystal scintillators for low counting experiments is discussed briefly.

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“…Liquid argon time projection chambers (LArTPCs) play a central role in modern neutrino physics [1][2][3][4] and dark matter searches [5][6][7][8]. As well as being an excellent active medium for time projection chamber operation, liquid argon is also a bright scintillator, with a yield of tens of thousands of photons per MeV.…”

Section: Tetraphenyl Butadiene Coatings In Liquid Argon Tpc Experimentsmentioning

confidence: 99%

Emanation and bulk fluorescence in liquid argon from tetraphenyl butadiene wavelength shifting coatings

et al. 2019

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A:We study the stability of three types of popularly employed TPB coatings under immersion in liquid argon. TPB emanation from each coating is quantified by fluorescence assay of molecular sieve filter material after a prolonged soak time. Two of the coatings are shown to emanate a detectable concentration of TPB into argon over a 24 hour period, which corresponds to tens of parts per billion in argon by mass. In an independent setup, the dissolved or suspended TPB is shown to produce a wavelength shifting effect in the argon bulk. Interpretations of these results and implications for present and future liquid argon time projection chamber experiments are discussed.

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Commissioning of the ArDM experiment at the Canfranc underground laboratory: first steps towards a tonne-scale liquid argon time projection chamber for Dark Matter searches

Cited by 45 publications

References 31 publications

Measurement of radon-induced backgrounds in the NEXT double beta decay experiment

Measurement of radon-induced backgrounds in the NEXT double beta decay experiment

Radioactive contamination of scintillators

Emanation and bulk fluorescence in liquid argon from tetraphenyl butadiene wavelength shifting coatings

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