Fast photon detection for particle identification with COMPASS RICH-1

  • P. Abbon
  • , M. Alekseev
  • , H. Angerer
  • , M. Apollonio
  • , R. Birsa
  • , P. Bordalo
  • , F. Bradamante
  • , A. Bressan
  • , L. Busso
  • , M. Chiosso
  • , P. Ciliberti
  • , M. L. Colantoni
  • , S. Costa
  • , S. Dalla Torre
  • , T. Dafni
  • , E. Delagnes
  • , H. Deschamps
  • , V. Diaz
  • , N. Dibiase
  • , V. Duic
  • W. Eyrich, D. Faso, A. Ferrero, M. Finger, M. Finger, H. Fischer, S. Gerassimov, M. Giorgi, B. Gobbo, R. Hagemann, D. von Harrach, F. H. Heinsius, S. Horikawa, R. Joosten, B. Ketzer, K. Königsmann, V. N. Kolosov, I. Konorov, D. Kramer, F. Kunne, A. Lehmann, S. Levorato, A. Maggiora, A. Magnon, A. Mann, A. Martin, G. Menon, A. Mutter, O. Nähle, F. Nerling, D. Neyret, P. Pagano, S. Panebianco, D. Panzieri, S. Paul, G. Pesaro, J. Polak, P. Rebourgeard, F. Robinet, E. Rocco, P. Schiavon, C. Schill, W. Schröder, L. Silva, M. Slunecka, F. Sozzi, L. Steiger, M. Sulc, M. Svec, F. Tessarotto, A. Teufel, H. Wollny

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Particle identification (PID) at high rates is an important challenge for many current and future high-energy physics experiments. The upgrade of the COMPASS RICH-1 detector requires a new technique for Cherenkov photon detection at count rates of several 106 per channel in the central detector region, and a read-out system allowing for trigger rates of up to 100 kHz. To cope with these requirements, the photon detectors in the central region have been replaced with the detection system described in this paper. In the peripheral regions, the existing multi-wire proportional chambers with CsI photocathode are now read out via a new system employing APV pre-amplifiers and flash ADC chips. The new detection system consists of multi-anode photomultiplier tubes (MAPMT) and fast read-out electronics based on the MAD4 discriminator and the F1-TDC chip. The RICH-1 is in operation in its upgraded version for the 2006 CERN SPS run. We present the photon detection design, constructive aspects and the first Cherenkov light in the detector.

Original languageEnglish
Pages (from-to)906-909
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume580
Issue number2
DOIs
StatePublished - 1 Oct 2007

Keywords

  • COMPASS
  • Multi-anode PMT
  • Particle identification
  • RICH

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