Scintillator tile hadron calorimeter with novel SiPM readout

✍ Scribed by M. Danilov

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 559 KB
• Volume: 581
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2007.08.025

✦ Synopsis

The CALICE collaboration is presently constructing a test hadron calorimeter (HCAL) with 7620 scintillator tiles readout by novel photo-detectors-Silicon Photomultipliers (SiPMs). This prototype is the first device which uses SiPMs on a large scale. We present the design of the HCAL and report on measured properties of more than 10 000 SiPMs. We discuss the SiPM efficiency, gain, cross-talk, and noise rate dependence on bias voltage and temperature, including the spread in these parameters. We analyze the reasons for SiPM rejection and present the results of the long-term stability studies. The first measurements of the SiPM radiation hardness are presented. We compare properties of SiPM with the properties of similar devices, MRS APD and MPPC. A possibility to make the tiles thinner and to read them out without WLS fibers has been studied.