Title :
Large-area SiPMs for the CMS hadron outer calorimeter
Author :
Heering, A. ; Rohlf, J. ; Freeman, J. ; Los, S. ; Kuleshov, S. ; Banerjee, S. ; Schmidt, I. ; Musienko, Y. ; Lebolo, L. ; Diaz, J.
Author_Institution :
Boston Univ., Boston
fDate :
Oct. 26 2007-Nov. 3 2007
Abstract :
We report on the measurement of pulse shape, gain, leakage current, and photon detection efficiency in 4-9 mm2 state-of-the-art silicon photomultipliers (SiPMs) obtained recently from the Center of Perspective Technology and Apparatus (CPTA) in Russia, Center for Scientific and Technological Research (ITC-irst) in Italy, and Hamamatsu Corporation in Japan. The CPTA and IRST SiPMs were used to read out a hodoscope of scintillators designed for the outer layer of the hadron calorimeter of the compact muon solenoid (CMS) with muon and pion beams at CERN. A direct comparison with CMS production hybrid photodiodes (HPDs) show that the SiPMs give an order of magnitude improvement in the signal to noise for single minimum ionizing particles (MIPs) and that the dynamic range is sufficient to detect up to 450 MIPs for use as a tail-catcher for late-developing hadronic showers in CMS.
Keywords :
electric current measurement; gain measurement; leakage currents; particle calorimetry; photocathodes; photodetectors; photodiodes; photomultipliers; position sensitive particle detectors; scintillation counters; shape measurement; CERN; CMS hadron outer calorimeter; CPTA; Center for Scientific and Technological Research; Center of Perspective Technology and Apparatus; HPD; Hamamatsu Corporation; ITC-irst; SiPM; compact muon solenoid; gain measurement; hadronic showers; hybrid photodiodes; leakage current measurement; minimum ionizing particles; muon beams; photodetector; photon detection efficiency; pion beams; pulse shape measurement; scintillators; silicon photomultipliers; Collision mitigation; Current measurement; Gain measurement; Leak detection; Leakage current; Mesons; Photonics; Pulse measurements; Pulse shaping methods; Shape measurement;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2007. NSS '07. IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-0922-8
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2007.4437293