18-22 February 2019
Vienna University of Technology
Europe/Vienna timezone

A particle detector system that exploits liquid argon scintillation light

Not scheduled
15m
Vienna University of Technology

Vienna University of Technology

Gusshausstraße 27-29, 1040 Wien
Board: 62
Poster Photon Detectors Poster Session A

Speaker

Marta Babicz (CERN, Geneva, Switzerland and Institute of Nuclear Physics PAN, Cracow, Poland)

Description

This paper describes a particle detection system that exploits the prompt signals from the scintillation light produced by ionizing particles in liquid argon. The system includes 10 R5912 Hamamatsu photomultipliers (PMTs) coated with TPB for the detection of the VUV scintillation light. A laser calibration system is used to set the gains and determine the relative timing of the PMTs. The setup is installed in a double-wall, vacuum-insulated 1500 liters liquid argon cryostat. The cryostat is approximately 2 m high and has 105 cm external diameter, 96 cm internal diameter.
The PMTs DAQ system is realized with 500 MS/s digitizers read out by means of 1.25 Gb/s bandwidth optical links. The system allows the recording of the whole waveform of each PMT in order to associate the interaction time of each event occurring in the volume with high timing resolution. The digitizers also provide logic signals when the PMT signals exceed a defined threshold. The logic signals are processed by FPGA modules in order to generate the trigger.
The detector has been exposed to cosmic rays. The system performance in terms of trigger efficiency and timing resolution, with a view to its application in neutrino detectors, will be presented.

Primary author

Marta Babicz (CERN, Geneva, Switzerland and Institute of Nuclear Physics PAN, Cracow, Poland)

Co-authors

Dr Alberto Guglielmi (INFN, Padova, Italy) Dr Alessandro Menegolli (University of Pavia and INFN, Pavia Italy) Andrea Rappoldi (University of Pavia and INFN, Pavia Italy) Dr Angela Fava (FNAL, IL USA) Dr Francesco Pietropaolo (CERN) Dr Gian Luca Raselli (University of Pavia and INFN, Pavia Italy) Dr Marzio Nessi (CERN) Massimo Rossella (University of Pavia and INFN, Pavia Italy) Dr Milind Diwan (BNL, NY, USA)

Presentation Materials

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