Measurement of Cherenkov photons by SiPMs with light guides

S. Korpar, H. Chagani, R. Dolenec, K. Hara, T. Iijima, P. Križan, Y. Mazuka, R. Pestotnik, A. Stanovnik, M. Yamaoka

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Silicon Photomultipliers (SiPMs) are attractive photon detectors for Ring Imaging Cherenkov (RICH) counters inside large magnetic spectrometers due to their insensitivity to magnetic fields. We have investigated the possibilities offered by these new photon detectors in a cosmic ray test set-up. Cherenkov photons emitted by cosmic ray particles in an aerogel radiator have been detected with silicon photomultipliers for the first time. Estimates and tests show how light concentrators may improve the detection efficiency, thus showing promise for a SiPM based RICH detector. The optimum shape for these light guides is investigated.

Original languageEnglish (US)
Pages (from-to)427-430
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number1
StatePublished - Oct 21 2009

Bibliographical note

Funding Information:
This work was supported by the Slovenian Research Agency (ARRS), Project numbers J1-9340 and J1-9339, and a grant-in-aid for scientific research on priority areas (“New Developments of Flavor Physics”, no. 18071003) from the Ministry of Education, Culture, Sports, Science and Technology of Japan.


  • Cherenkov detectors
  • Silicon Photomultiplier


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