X-Arapuca long term test
Abstract
The photon detection system of the DUNE experiment is based on the X-ARAPUCA light trap. The basic elements of the X-ARAPUCA are the dichroic filters coated with wavelength shifter (para-Therphenyl), a waveshifting plate and an array of SiPMs which detects the trapped photons. A small scale prototype of the X-ARAPUCA has been installed in liquid argon in a dedicated facility at INFN-Napoli and exposed to alpha particles from a source. In order to test the stability of the overall device response the X-ARAPUCA was kept for 10 days in continuously purified liquid argon. The performed tests allowed for a preliminary estimation of the X-ARAPUCA absolute photon detection efficiency.
- Publication:
-
Journal of Instrumentation
- Pub Date:
- February 2024
- DOI:
- 10.1088/1748-0221/19/02/C02021
- arXiv:
- arXiv:2301.00420
- Bibcode:
- 2024JInst..19C2021A
- Keywords:
-
- Large detector systems for particle and astroparticle physics;
- Neutrino detectors;
- Noble liquid detectors (scintillation;
- ionization;
- double-phase);
- Photon detectors for UV;
- visible and IR photons (solid-state) (PIN diodes;
- APDs;
- Si-PMTs;
- G-APDs;
- CCDs;
- EBCCDs;
- EMCCDs;
- CMOS imagers;
- etc);
- Physics - Instrumentation and Detectors