Development of an electron-tracking Compton camera using SOI pixel sensor for sub-MeV gamma-ray observations Article Swipe
Mika Kagaya
,
H. Katagiri
,
Ryo Kato
,
Naomi Tojo
,
Y. Arai
,
Takeshi Go Tsuru
,
Ayaki Takeda
,
Kenji Shimazoe
·
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.22323/1.444.0902
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.22323/1.444.0902
We have been developed an electron tracking Compton camera (ETCC) using an SOI pixel semiconductor detector for observation sub MeV gamma rays. An electron tracking Compton camera can reconstruct arrival directions of gamma rays event by event as a point using the recoil directions of electron tracks , so this camera does not increase false spot comparing with a classical Compton camera. Also, an ETCC can discriminate between the gamma rays and backgrounds by detecting the track length and energy of recoil electrons. In addition, ETCC using a semiconductor detector is useful for detecting line gamma rays because of its high energy resolution. We focused on a n SOI pixel semiconductor detector, which has a small pixel pitch of a few ten um. The sensor has a trigger circuit mounted on each pixel, so we can select only candidate gamma ray events and readout only the selected pixels. We developed a prototype Compton camera using XRPIX2b sensor, which is an SOI pixel sensor developed by Kyoto University. We evaluated the detection capability of recoil electron due to 511 keV gamma rays while changing various conditions such as scattering angle and incident directions of gamma rays. From the results of the evaluation in the laboratory, we succeeded in detecting recoil electron tracks and estimating the recoil directions using the track image. Furthermore, we confirmed to be able to detect the radioisotope position using back projection method. We obtained sufficient quantitative detailed performance data of the current sensor to develop a novel sensor for ETCC.
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All OpenAlex metadata
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https://openalex.org/W4385359777Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.22323/1.444.0902Digital Object Identifier
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Development of an electron-tracking Compton camera using SOI pixel sensor for sub-MeV gamma-ray observationsWork title
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articleOpenAlex work type
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enPrimary language
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2023Year of publication
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2023-07-27Full publication date if available
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Mika Kagaya, H. Katagiri, Ryo Kato, Naomi Tojo, Y. Arai, Takeshi Go Tsuru, Ayaki Takeda, Kenji ShimazoeList of authors in order
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https://doi.org/10.22323/1.444.0902Publisher landing page
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YesWhether a free full text is available
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goldOpen access status per OpenAlex
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https://doi.org/10.22323/1.444.0902Direct OA link when available
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Physics, Gamma ray, Recoil, Tracking (education), Pixel, Detector, Optics, Electron, Compton scattering, Nuclear physics, Pedagogy, PsychologyTop concepts (fields/topics) attached by OpenAlex
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0Total citation count in OpenAlex
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