Journal
JOURNAL OF INSTRUMENTATION
Volume 12, Issue -, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1748-0221/12/12/P12011
Keywords
Dark Matter detectors (WIMPs, axions, etc.); Noble liquid detectors (scintillation, ionization, double-phase)
Categories
Funding
- Italian Istituto Nazionale di Fisica Nucleare
- U.S. National Science Foundation [1004051, 1242571, 1314268, 1314479, 1314483, 1314501, 1314507, 1314752]
- US Department of Energy [DE-AC02-07CH11359, DE-FG02-91ER40671]
- Polish NCN [UMO-2014/15/B/ST2/02561]
- Russian Science Foundation [16-12-10369]
- UnivEarthS Labex program of Sorbonne Paris Cite [ANR-10-LABX-0023, ANR-11-IDEX-0005-02]
- Sao Paulo Research Foundation (FAPESP) [2016/09084-0]
- INFN CSN-V(5) QUPID-RD grant
- Direct For Mathematical & Physical Scien
- Division Of Physics [1314479, 1242571, 1314501] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Physics [1314483, 1314268, 1004051, 1314752, 1314507] Funding Source: National Science Foundation
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The DarkSide-50 experiment at the Laboratori Nazionali del Gran Sasso is a search for dark matter using a dual phase time projection chamber with 50 kg of low radioactivity argon as target. Light signals from interactions in the argon are detected by a system of 38 photo-multiplier tubes (PMTs), 19 above and 19 below the TPC volume inside the argon cryostat. We describe the electronics which processes the signals from the photo-multipliers, the trigger system which identifies events of interest, and the data-acquisition system which records the data for further analysis. The electronics include resistive voltage dividers on the PMTs, custom pre-amplifiers mounted directly on the PMT voltage dividers in the liquid argon, and custom amplifier/discriminators (at room temperature). After amplification, the PMT signals are digitized in CAEN waveform digitizers, and CAEN logic modules are used to construct the trigger; the data acquisition system for the TPC is based on the Fermilab artdaq software. The system has been in operation since early 2014.
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