SiPM based photon counting detector for scanning digital radiography

作者：Babichev E A; Baru S E; Grigoriev D N; Oleynikov V P; Porosev V V^*; Savinov G A; Callier Stephane

来源：Journal of Instrumentation, 2015, 10(03): C03002.

DOI：10.1088/1748-0221/10/03/C03002

• Scintillators, scintillation and light emission processes (solid, gas and liquid scintillators)
• Photon detectors for UV, visible and IR photons (solid-state)
• X-ray radiography and digital radiography (DR)

In the present report, we summarize the results of our efforts to create a x-ray counting detector for digital scanning radiography based on the silicon photomultipliers (SiPM) at Budker Institute of Nuclear Physics for the last year. We have performed a comparative study of the possible candidates for scintillator - YAP, LFS-3, LGSO, LYSO and two types of SiPMs - HAMAMATSU MPPC with 25 mu m pixel (S10362-33-025C) and KETEK SiPM with 15 mu m pixel (MP15V9 type) circle divide 2.5mm. To measure real detector parameters we have built a detector prototype based on a 32-channel Omega EASIROC front-end chip. The results obtained in this study demonstrate that such detector could reach quantum efficiency > 95%, counting rate - 5 MHz, energy resolution similar to 34% (at 59.5 keV) and spatial resolution that is determined by scintillator and SiPM size.

• 出版日期2015-3