Characterization of the scintillation time response of liquid argon detectors for dark matter search. (arXiv:2110.05350v1 [physics.ins-det])

Characterization of the scintillation time response of liquid argon detectors for dark matter search. (arXiv:2110.05350v1 [physics.ins-det])
<a href="http://arxiv.org/find/physics/1/au:+Agnes_P/0/1/0/all/0/1">P. Agnes</a>, <a href="http://arxiv.org/find/physics/1/au:+Cecco_S/0/1/0/all/0/1">S. De Cecco</a>, <a href="http://arxiv.org/find/physics/1/au:+Fan_A/0/1/0/all/0/1">A. Fan</a>, <a href="http://arxiv.org/find/physics/1/au:+Fiorillo_G/0/1/0/all/0/1">G. Fiorillo</a>, <a href="http://arxiv.org/find/physics/1/au:+Franco_D/0/1/0/all/0/1">D. Franco</a>, <a href="http://arxiv.org/find/physics/1/au:+Galbiati_C/0/1/0/all/0/1">C. Galbiati</a>, <a href="http://arxiv.org/find/physics/1/au:+Giganti_C/0/1/0/all/0/1">C. Giganti</a>, <a href="http://arxiv.org/find/physics/1/au:+Korga_G/0/1/0/all/0/1">G. Korga</a>, <a href="http://arxiv.org/find/physics/1/au:+Lebois_M/0/1/0/all/0/1">M. Lebois</a>, <a href="http://arxiv.org/find/physics/1/au:+Mandarano_A/0/1/0/all/0/1">A. Mandarano</a>, <a href="http://arxiv.org/find/physics/1/au:+Martoff_C/0/1/0/all/0/1">C. J. Martoff</a>, <a href="http://arxiv.org/find/physics/1/au:+Pagani_L/0/1/0/all/0/1">L. Pagani</a>, <a href="http://arxiv.org/find/physics/1/au:+Pantic_E/0/1/0/all/0/1">E. Pantic</a>, <a href="http://arxiv.org/find/physics/1/au:+Razeto_A/0/1/0/all/0/1">A. Razeto</a>, <a href="http://arxiv.org/find/physics/1/au:+Renshaw_A/0/1/0/all/0/1">A. L. Renshaw</a>, <a href="http://arxiv.org/find/physics/1/au:+Riffard_Q/0/1/0/all/0/1">Q. Riffard</a>, <a href="http://arxiv.org/find/physics/1/au:+Schlitzer_B/0/1/0/all/0/1">B. Schlitzer</a>, <a href="http://arxiv.org/find/physics/1/au:+Tonazzo_A/0/1/0/all/0/1">A. Tonazzo</a>, <a href="http://arxiv.org/find/physics/1/au:+Wang_H/0/1/0/all/0/1">H. Wang</a>, <a href="http://arxiv.org/find/physics/1/au:+Wilson_J/0/1/0/all/0/1">J. N. Wilson</a>

The scintillation time response of liquid argon has a key role in the
discrimination of electronic backgrounds in dark matter search experiments.
However, its extraordinary rejection power can be affected by various detector
effects such as the delayed light emission of TetraPhenyl Butadiene, the most
commonly used wavelength shifter, and the electric drift field applied in Time
Projection Chambers. In this work, we characterized the TetraPhenyl Butadiene
delayed response and the dependence of the pulse shape discrimination on the
electric field, exploiting the data acquired with the ARIS, a small-scale
single-phase liquid argon detector exposed to monochromatic neutron and gamma
sources at the ALTO facility of IJC Lab in Orsay.

The scintillation time response of liquid argon has a key role in the
discrimination of electronic backgrounds in dark matter search experiments.
However, its extraordinary rejection power can be affected by various detector
effects such as the delayed light emission of TetraPhenyl Butadiene, the most
commonly used wavelength shifter, and the electric drift field applied in Time
Projection Chambers. In this work, we characterized the TetraPhenyl Butadiene
delayed response and the dependence of the pulse shape discrimination on the
electric field, exploiting the data acquired with the ARIS, a small-scale
single-phase liquid argon detector exposed to monochromatic neutron and gamma
sources at the ALTO facility of IJC Lab in Orsay.

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