The fast photon detection system of COMPASS RICH-1

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

doi:10.1016/j.nima.2007.08.018

Cited by 15 publications

(4 citation statements)

References 11 publications

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“…For this RICH counter a nice solution was found for a common drawback of vacuum based photon detectors, i.e., a rather large fraction of dead area, by using an imaging light collection system with two plastic lenses [20]. A similar solution was later adopted in the RICH counter of the COMPASS experiment [21], with two quartz lenses for an improved UV transmission.…”

Section: Multianode Photomultiplier Tubesmentioning

confidence: 99%

Overview of photon detectors for fast single photon detection

Križan

2014

J. Inst.

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Section: Multianode Photomultiplier Tubesmentioning

confidence: 99%

Overview of photon detectors for fast single photon detection

Križan

2014

J. Inst.

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“…In 2006, to overcome the problem of low PID efficiency for very forward particles, to provide higher rate capability and to get rid of the large uncorrelated background, the MWPCs with CsI photocathodes in the central region (25% of the detector surface) have been replaced by a fast detection system [25][26][27][28][29][30] based on MAPMTs coupled to individual fused silica lens telescopes and read out via sensitive front-end digital electronics and high resolution TDCs.…”

Section: The Mapmt-based Photon Detectors the Readout And Daqmentioning

confidence: 99%

Long term experience and performance of COMPASS RICH-1

et al. 2014

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JINST 9 C09011ABSTRACT: COMPASS RICH-1 is a large size gaseous Imaging Cherenkov Detector providing hadron identification in the range from 3 to 55 GeV/c, in the wide acceptance spectrometer of the COMPASS Experiment at CERN SPS.It uses a 3 m long C 4 F 10 radiator, a 21 m 2 large VUV mirror surface and two kinds of photon detectors: MAPMTs and MWPCs with CsI photocathodes, covering a total of 5.5 m 2 . It is in operation since 2002 and its performance increased thanks to progressive optimization and to a major upgrade of its photon detection system, implemented in 2006; a new upgrade is foreseen for 2016, with the use of MPGD-based photon detectors.The main characteristics of COMPASS RICH-1 components are described and the most critical aspects related to the C 4 F 10 radiator gas system, to the mirrors and their alignment, as well as the performance of the photon detectors are presented and discussed. The response of the MWPCs and the observed evolution of the effective quantum efficiency of the CsI photocathodes is analyzed. The properties and performance of the MAPMTs with individual fused lens telescopes are presented together with the readout characteristics. The PID performance of COMPASS RICH-1 is discussed and the future upgrade program is mentioned.

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“…The resulting kaon identification efficiency (figure 4) exceeded 85% over most of the kinematic region of the experiment, with pion fake probability at the few percent level. In the COMPASS experiment the central region of the RICH counter was recently upgraded to enable running at higher beam intensities, higher trigger rates and with a nanosecond time resolution for background suppression [26]. The wire chamber based photon detector (section 2.5) was replaced by an array of multianode PMTs very similar to the HERA-B RICH.…”

Section: Hera-b Richmentioning

confidence: 99%

Advances in particle-identification concepts

Križan

2009

J. Inst.

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The paper reviews recent progress in particle identification methods. We first survey the present experience in Cherenkov counters employed for particle identification in various experimental environments. Then we discuss upgrades of existing devices and novel detector concepts, as well as recent progress in photon detectors. We also evaluate the possibility of a precision measurement of the time of arrival of Cherenkov photons, either in combination with a ring imaging counter or in a dedicated time-of-flight detector. We further discuss identification with a time-offlight measurement over very large areas by means of gas chambers, and the application of the measurement of energy loss in large volume TPC trackers. Finally, we discuss electron identification in transition radiation detectors and identification of muons in muon detector systems.

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The fast photon detection system of COMPASS RICH-1

Cited by 15 publications

References 11 publications

Overview of photon detectors for fast single photon detection

Overview of photon detectors for fast single photon detection

Long term experience and performance of COMPASS RICH-1

Advances in particle-identification concepts

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