11th International "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors (HSTD11) in conjunction with 2nd Workshop on SOI Pixel Detectors (SOIPIX2017) at OIST, Okinawa, Japan

Prototype of a 250 µm Pitch 36-Channel Silicon Photo Multiplier Array Using Silicon on Insulator Technology for Photon Counting Computed Tomography

15 Dec 2017, 11:50

20m

Conference Center (Okinawa Institute of Science and Technology Graduate University (OIST))

ORAL SOI detectors Session16

Speaker

Akihiro Koyama (University of Tokyo)

Description

Photon counting computed tomography (PCCT) based on indirect conversion detectors have taken great interests from its low fabrication cost and easy handling. Recent fine-pitch scintillator array also shows great potentials for spatial resolution enhancement. However, requirements for photo detector are still severe for precise energy and position measurement in PCCT.
In order to achieve both sensitivity and high spatial resolution in photo detector, 250 µm pitch Silicon photomultiplier array using Silicon on Insulator technology (SOI-SiPM) was provided in this study. SiPM, which is operated at over breakdown voltage, provides weak light detection capability with high S/N and fast response derived from internal gain. Back illumination capability of SOI contributes to avoid detection efficiency deterioration derived from quench resistor. As feasibility study, the first prototype of a 36-channel SOI-SiPM array was fabricated and characterized.

Presentation materials

koyama_hstdSOI.pdf