29 July 2018 to 4 August 2018
Russian Academy of Sciences
Europe/Moscow timezone

The Hybrid MPGD-based photon detectors of COMPASS RICH-1

30 Jul 2018, 11:25
Blue Hall (Russian Academy of Sciences)

Blue Hall

Russian Academy of Sciences

Leninsky Prospekt, 32а Moscow 119071 Russian Federation
oral presentation [20+5 min] Cherenkov light imaging in particle and nuclear physics experiments Cherenkov light imaging in particle and nuclear physics experiments


Dr Fulvio Tessarotto (INFN Trieste)


COMPASS RICH-1 has been upgraded in 2016 with Hybrid MPGD-based photon detectors, covering a total active area of 1.4 square meters. The detector architecture consists of two layers of THGEMs, the first of which also acts as a reflective photocathode and a bulk Micromegas on a pad-segmented anode; the signals are read-out via capacitive coupling by analog F-E based on the APV-25 chip.
The detectors have been commissioned in 2016 and during the 2017 COMPASS physics run they provided stable and efficient operation.
The main aspects of the COMPASS RICH-1 Photon Detectors upgrade are presented together with the problems encountered during the commissioning phase and the adopted solutions.
The response of the hybrid detectors is illustrated and their performance is presented.
The combination and comparison of the three photon detector technologies (MAPMTs, MWPCs and MPGDs) in COMPASS RICH-1 are discussed.
The perspectives for further developments and applications of these novel detectors will be addressed.
The talk is on behalf of the COMPASS RICH group.

Primary author

Dr Fulvio Tessarotto (INFN Trieste)

Presentation Materials

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