2019/01/24 by F. Acerbi, G. Ballerini, A. Berra +43 · 1 citation
Medicine · Physics and Astronomy · #Dark current #Electron #Irradiation #Neutrino Physics Research #Photodetector #Photoelectric effect #Photomultiplier #Radiation #Radiation Detection and Scintillator Technologies #Radiation Therapy and Dosimetry #Silicon #Silicon photomultiplier #hep-ex #physics.ins-det
paper · pdf · doi:10.1088/1748-0221/14/02/p02029
14 pages, 13 figures. To appear in JINST
arxiv created 2019/01/24 · openalex created_date 2019/02/21 · openalex publication_date 2019/02/26 · arxiv updated 2019/05/22 · openalex updated_date 2026/08/05
Silicon Photomultipliers with cell-pitch ranging from 12 μm to 20 μm were tested against neutron irradiation at moderate fluences to study their performance for calorimetric applications. The photosensors were developed by FBK employing the RGB-HD technology. We performed irradiation tests up to 2 × 10 11 n/cm 2 (1 MeV eq.) at the INFN-LNL Irradiation Test facility. The SiPMs were characterized on-site (dark current and photoelectron response) during and after irradiations at different fluences. The irradiated SiPMs were installed in the ENUBET compact calorimetric modules and characterized with muons and electrons at the CERN East Area facility. The tests demonstrate that both the electromagnetic response and the sensitivity to minimum ionizing particles are retained after irradiation. Gain compensation can be achieved increasing the bias voltage well within the operation range of the SiPMs. The sensitivity to single photoelectrons is lost at ∼ 10 10 n/cm 2 due to the increase of the dark current.