Research for gamma-ray real-time imaging method using CPU embedded FPGA

• Project/Area Number: 19K14742
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 15020:Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics
• Research Institution: University of Miyazaki
• Principal Investigator: Takeda Ayaki 宮崎大学, 工学部, 准教授 (40736667)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Project Status: Completed (Fiscal Year 2021)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2019: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: ガンマ線イメージング / コンプトンカメラ / リアルタイム処理 / 電子飛跡 / X線ガンマ線天文学 / リアルタイム / Ｘ線ガンマ線天文学 / 電子飛跡型

Outline of Research at the Start

本研究の最終目的は，発展途上の宇宙ガンマ線天文学を切り拓く鍵となる，電子飛跡型半導体コンプトンカメラを実現させることである。申請者が研究開発を進めてきたイベント駆動型SOIPIXにより，少数のガンマ線検出で到来方向を決定することが可能となり，性能が大きく飛躍する。本研究課題では，CPU組み込みFPGAによるオンボードデータ処理を実装することにより，課題であるリアルタイム性を躍進させる手法の研究開発に挑戦する。

Outline of Final Research Achievements

This study aims to research a gamma-ray real-time imaging method using a CPU-embedded FPGA. This study obtained three results: 1) We developed a digital circuit for extracting hit-pattern information and embedded it into our image sensor. This circuit contributed to efficient data acquisition of recoil electrons due to Compton scattering by gamma-rays. 2) We generated pseudo-image data of recoiled electrons by simulating Compton scattering events. We also generated a neural network data processing model using the image data. 3) We investigated a method to implement the developed model on the CPU-embedded FPGA.

Academic Significance and Societal Importance of the Research Achievements

ガンマ線リアルタイムイメージングを実現するため，CPU組み込みFPGAを用いて基板上で高度な解析モデルを適用したデータ処理を行うための手法研究を実施した。本研究の遂行により，解析モデルを構築する上での課題の洗い出しとCPU組み込みFPGA上に実装する手法の検討を進めることができた。本研究で得られた成果は，可搬型でコンパクトな物理計測システムを実現するための基盤技術であり，今後，ガンマ線イメージングだけでなく，様々な量子イメージング分野への応用が期待できる。

Research Products

• [Journal Article] Low-energy X-ray performance of SOI pixel sensors for astronomy, “XRPIX” (2021)
  • Author(s): Kodama Ryota, Ayaki Takeda, et al.
  • Journal Title: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Volume: 986 Pages: 164745-164745
  • DOI: 10.1016/j.nima.2020.164745
  • Peer Reviewed / Open Access
• [Journal Article] Radiation damage effects on double-SOI pixel sensors for X-ray astronomy (2020)
  • Author(s): Hagino Kouichi, Ayaki Takeda, et al.
  • Journal Title: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Volume: 978 Pages: 164435-164435
  • DOI: 10.1016/j.nima.2020.164435
  • Peer Reviewed / Open Access
• [Journal Article] Development of the detector simulation framework for the Wideband Hybrid X-ray Imager onboard FORCE (2020)
  • Author(s): Suzuki Hiromasa、Tamba Tsubasa、Odaka Hirokazu、Bamba Aya、Hagino Kouichi、Takeda Ayaki、Mori Koji、Hida Takahiro、Yukumoto Masataka、Nishioka Yusuke、Tsuru Takeshi G.
  • Journal Title: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Volume: 979 Pages: 164433-164433
  • DOI: 10.1016/j.nima.2020.164433
  • Peer Reviewed / Open Access
• [Journal Article] Spectroscopic performance improvement of SOI pixel detector for X-ray astronomy by introducing Double-SOI structure (2020)
  • Author(s): Ayaki Takeda, Koji Mori, et al.
  • Journal Title: Journal of Instrumentation Volume: 15 Issue: 11 Pages: P11001-P11001
  • DOI: 10.1088/1748-0221/15/11/p11001
  • Peer Reviewed
• [Journal Article] Development of on-chip pattern processing in event-driven SOI pixel detector for X-ray astronomy with background rejection purpose (2020)
  • Author(s): Ayaki Takeda, Koji Mori, et al.
  • Journal Title: Journal of Instrumentation Volume: 15 Issue: 12 Pages: P12025-P12025
  • DOI: 10.1088/1748-0221/15/12/p12025
  • Peer Reviewed
• [Journal Article] Simulation study on SOI based electron tracking Compton camera using deep learning method (2020)
  • Author(s): Kenji Shimazoe, Ayaki Takeda, et al.
  • Journal Title: Journal of Instrumentation Volume: 15 Issue: 02 Pages: C02010-C02010
  • DOI: 10.1088/1748-0221/15/02/c02010
  • Peer Reviewed
• [Journal Article] Subpixel response of SOI pixel sensor for X-ray astronomy with pinned depleted diode: first result from mesh experiment (2019)
  • Author(s): Kayama K.、Tsuru T. G.、Tanaka T.、Uchida H.、Harada S.、Okuno T.、Amano Y.、Hiraga J. S.、et al.
  • Journal Title: Journal of Instrumentation Volume: 14 Issue: 06 Pages: C06005-C06005
  • DOI: 10.1088/1748-0221/14/06/c06005
  • Peer Reviewed / Open Access
• [Journal Article] Sub-pixel response of double-SOI pixel sensors for X-ray astronomy (2019)
  • Author(s): Koichi Hagino, Ayaki Takeda, et al.
  • Journal Title: Journal of Instrumentation Volume: 14 Issue: 10 Pages: C10023-C10023
  • DOI: 10.1088/1748-0221/14/10/c10023
  • Peer Reviewed
• [Presentation] SOIPIXを用いたsub-MeVガンマ線観測用の電子飛跡検出型コンプトンカメラの開発 (2022)
  • Author(s): 加賀谷美佳，武田彩希，鶴剛，田中孝明，他
  • Organizer: 日本物理学会 第77回年次大会
• [Presentation] SOI 技術を用いた新型X線撮像分光器の開発 51 : Double-SOI 構造の大面積X線 SOI ピクセル検出器の性能評価 (2021)
  • Author(s): 三枝紀嵐，武田彩希，森浩二，鶴剛，田中孝明，他
  • Organizer: 日本天文学会 2021年秋季大会
• [Presentation] Development of electron-tracking Copton imaging system with SOI pixel sensor and GFAG-SiPM array (2021)
  • Author(s): L. Zhang, M. Uenomachi, K. Shimazoe, H. Takahashi, A. Takeda
  • Organizer: 第82回応用物理学会秋季学術講演会
• [Presentation] Detection of recoil electron tracks using an SOI pixel sensor for an advanced Compton camera (2021)
  • Author(s): M. Kagaya, A. Takeda, T. G. Tsuru, T. Tanaka et al.
  • Organizer: IEEE NSS / MIC 2021
  • Int'l Joint Research
• [Presentation] 宇宙X線観測向けSOIピクセル検出器におけるPinned Depleted Diode構造の改良 (2020)
  • Author(s): 武田彩希，森浩二，西岡祐介，日田貴熙，行元雅貴 他16名
  • Organizer: 日本物理学会 2020年 秋季大会
• [Presentation] SOI技術を用いた新型X線撮像分光器の開発 44：PDD構造に改良を加えたX線SOIピクセル検出器の性能評価 (2020)
  • Author(s): 行元雅貴，森浩二，武田彩希，西岡祐介，三枝紀嵐 他18名
  • Organizer: 日本天文学会 2020年 秋季大会
• [Presentation] Proton radiation hardness of x-ray SOI pixel detectors with pinned depleted diode structure (2020)
  • Author(s): M. Hayashida, T. Kohmura, K. Hagino, K. Oono, A. Takeda 他18名
  • Organizer: SPIE Astronomical Telescopes + Instrumentation
  • Int'l Joint Research
• [Presentation] SOI 技術を用いた新型 X 線撮像分光器 の開発 38: X 線 SOI ピクセル検出器の軟 X 線性能評価 (2019)
  • Author(s): 児玉涼太，鶴剛，田中孝明，内田裕之，佳山一帆，天野雄輝，武田彩希，森浩二，西岡祐介、日田貴熙，行元雅貴，川人祥二，安富啓太，亀濱博紀，新井康夫，倉知郁生，幸村孝由，萩野浩一，林田光揮，北島正隼
  • Organizer: 日本天文学会 2019年 秋季年会
• [Presentation] SOI 技術を用いた新型 X 線撮像分光器の開発 39: 新規構造を導入した X 線 SOI ピクセル検出器の放射線耐性の評価 (2019)
  • Author(s): 林田光揮，幸村孝由，萩野浩一，大野顕司，根岸康介，鑓田敬吾，北島正隼，鶴剛，田中孝明，内田裕之，佳山一帆，天野雄輝，児玉涼太，森浩二，武田彩希，西岡祐介，日田貴熙，行元雅貴，新井康夫，倉知郁生，濱野毅，北村尚，川人祥二，安富啓太，亀濱博紀
  • Organizer: 日本天文学会 2019年 秋季年会
• [Presentation] SOI 技術を用いた新型 X 線撮像分光器の開発 40: イベント駆動読み出しにおけるヒットパターン処理回路の評価 (2019)
  • Author(s): 日田貴熙，武田彩希，行元雅貴，西岡祐介，森浩二，鶴剛，田中孝明，内田裕之，佳山一帆，天野雄輝，児玉涼太，新井康夫，倉知郁生，幸村孝由，萩野浩一，林田光揮，北島正隼
  • Organizer: 日本天文学会 2019年 秋季年会
• [Presentation] Performance Improvement of the Event-Driven SOI Pixel Detectors for X-ray Astronomy (2019)
  • Author(s): A. Takeda, K. Mori, Y. Nishioka, M. Yukumoto, T. Hida, T. G. Tsuru, T. Tanaka, H. Uchida, K. Kayama, Y. Amano, H. Matsumura, Y. Arai, I. Kurachi, T. Kohmura, K. Hagino, S. Kawahito, K. Kagawa, K. Yasutomi, S. Nakanishi, H. Kamehama
  • Organizer: 21st International Workshops on Radiation Imaging Detectors (iWoRiD2019)
  • Int'l Joint Research
• [Presentation] Improvement and Evaluation of the Event-driven SOI Pixel Detector with Pattern Processing Circuit for X-ray Astronomy (2019)
  • Author(s): A. Takeda, K. Mori, Y. Nishioka, M. Yukumoto, T. Hida, T. G. Tsuru, T. Tanaka, H. Uchida, K. Kayama, Y. Amano, R. Kodama, Y. Arai, I. Kurachi, T. Kohmura, K. Hagino, M. Hayashida, S. Kawahito, K. Yasutomi, H. Kamehama
  • Organizer: 12th International "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors (HSTD12)
  • Int'l Joint Research
• [Presentation] Performance evaluation of recoil electron track detection with an electron tracking Compton camera using an SOI pixel sensor (2019)
  • Author(s): H. Katagiri, M. Kagaya, N. Tojo, Y. Arai, T. Uchida, A. Takeda, T. G. Tsuru
  • Organizer: 12th International "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors (HSTD12)
  • Int'l Joint Research
• [Presentation] Radiation Damage Effects on Double-SOI Pixel Sensors for X-ray Astronomy (2019)
  • Author(s): K. Hagino, K. Yarita, M. Kitajima, K. Negishi, K. Oono, M. Hayashida, T. Kohmura, T. G. Tsuru, T. Tanaka, H. Uchida, K. Kayama, Y. Amano, R. Kodama, A. Takeda, Y. Nishioka, M. Yukumoto, T. Hida, Y. Arai, I. Kurachi, T. Hamano, H. Kitamura
  • Organizer: 12th International "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors (HSTD12)
  • Int'l Joint Research
• [Presentation] Soft X-ray Trigger Performance of X-ray Astronomy SOI Pixel Sensors, "XRPIX" (2019)
  • Author(s): R. Kodama, T. G. Tsuru, T. Tanaka, H. Uchida, K. Kayama, Y. Amano, A. Takeda, K. Mori, Y. Nishioka, T. Hida, M. Yukumoto, S. Kawahito, K. Yasutomi, H. Kamehama
  • Organizer: 12th International "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors (HSTD12)
  • Int'l Joint Research