Crosstalk study of the single-photon response of a flat-panel PMT for the RICH upgrade at LHCb

Claudio Arnaboldi, Marina Artuso, Marta Calvi, Erica Fanchini, Claudio Gotti, Matteo Maino, Clara Matteuzzi, Davide Luigi Perego, Gianluigi Pessina, Jianchun Wang

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


The ring imaging Cherenkov (RICH) detector at LHCb is now read out by hybrid photon detectors. In view of its upgrade, a possible option is the adoption of the flat-panel photon multiplier tube (PMT). An important issue for good reconstruction of the Cherenkov rings is a negligible level of crosstalk. We have experimentally studied the crosstalk from the 16 × 16-pixels Hamamatsu H9500 PMT. Results have shown that, for the single-photon response, the statistics tied to the small number of electrons generated at the first dynode of the PMT chain (a few units) leads to a number of crosstalk signals that are a small fraction of the fired pixel. With the H9500, in a Cherenkov ring, only one or two pixels are expected to generate crosstalk. As a consequence, crosstalk cannot be considered a limit in the use of the H9500 for the upgrade of the RICH at LHCb.

Original languageEnglish (US)
Article number5550320
Pages (from-to)2267-2272
Number of pages6
JournalIEEE Transactions on Nuclear Science
Issue number4 PART 2
StatePublished - Aug 2010


  • Crosstalk
  • optoelectronic
  • photomultipliers
  • photonic sensors

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering


Dive into the research topics of 'Crosstalk study of the single-photon response of a flat-panel PMT for the RICH upgrade at LHCb'. Together they form a unique fingerprint.

Cite this