Toward sub-micrometer neutron transmission imaging with novel 8-terminal kinetic inductance detector

2023 年度 実施状況報告書

• 研究課題/領域番号: 23K13690
• 研究機関: 大阪公立大学
• 研究代表者: VU THEDANG 大阪公立大学, 大学院工学研究科, 特任助教 (60826121)
• 研究期間 (年度): 2023-04-01 – 2025-03-31
• キーワード: Neutron detector / CBKID / Neutron image / Kalliope / spatial resolution / Time resolution

研究実績の概要

This project aims to develop sub-micrometer resolution neutron image with a novel 8 channels current-biased kinetic inductance detector (CB-KID) system. In fiscal 2023, we succeeded in stabilizing an operating temperature at 5K ±70uK. This improved a spatial resolution of neutron transmission image down to 10um when the sample was installed at low temperature and it was 24um when the sample was placed at room temperature [1,2]. This also reduces a difference of spatial resolution between central region and surrounding region in the detector. A temporal resolution of time-to-digital convertor (TDC) strongly influences to a spatial-resolution neutron image in the delay-line CB-KID. We built a new TDC system named as Kalliope-II. A temporal resolution was estimated withing +/-150ps. This is much better than the previous readout circuit (named as Kalliope-I). Data acquisition (DAQ) program and data analysis program were updated to deal with new system. A quasi-on-line monitor imaging becomes possible during imaging experiments. The 8ch CB-KID is under development. We plan to proceed the experiments in the next fiscal year.
[1] T. Ishida, T.D. Vu et al., J Low Temp Phys (2024) 214:152-157.
[2] T.D. Vu et al., J Phys: Conf Ser 2545 (2023) 012019.

現在までの達成度 (区分)

2: おおむね順調に進展している

理由

Neutron transmission imaging by using CB-KID showed the resolution of 10um. This is one of the best in using the counting type neutron detector. We developed the new 30ps readout circuit to extract the best performance of the CB-KID system. The DAQ program became possible to give a quasi-online image monitoring. This is in good accordance with our plan.
We suppose that our project has been processed rather smoothly.

今後の研究の推進方策

In fiscal 2024, (1) we will continue to optimize the new Kalliope-II readout circuit including firmware update of the Kalliope-II readout circuit. (2) We plan to compare the results of 30-ps Kalliope-II measurements and the results of 1000-ps Kalliope-I measurements by doing simultaneous measurements for mutual comparisons. (3) We start the testing of the 8ch CB-KID detector using the Kalliope-II circuit. (4) Measurement and analysis programs will be updated to deal with the 8ch CB-KID data. (5) The 8 channels neutron detectors will be screened systematically by low temperature experiments using liquid helium and low-temperature probe designed for the CB-KID detectors. This can be done without neutron beams. (6) The standard Gd Siemens-star sample will be tested either at low temperature or at room temperature to achieve the best resolution. We summarize the project.

次年度使用額が生じた理由

A part of detector fabrication was delayed by the facility-side reason. Therefore, we have to use some of the fiscal year 2023 budget in fiscal year 2024.

研究成果

• [雑誌論文] Neutron Transmission CB-KID Imager Using Samples Placed at Room Temperature (2024)
  • 著者名/発表者名: Ishida Takekazu、Vu The Dang、Shishido Hiroaki、Aizawa Kazuya、Oku Takayuki、Oikawa Kenichi、Harada Masahide、Kojima Kenji M.、Miyajima Shigeyuki、Koyama Tomio、Soyama Kazuhiko、Hidaka Mutsuo、Suzuki Soh Y.、Tanaka Manobu M.、Machida Masahiko、Kawamata Shuichi
  • 雑誌名: Journal of Low Temperature Physics 巻: 214 ページ: 152～157
  • DOI: 10.1007/s10909-023-03030-9
  • 査読あり / 国際共著
• [雑誌論文] Superconducting neutron transmission imaging for investigating a sequential change in phase separations of low-melting Wood’s metal (2023)
  • 著者名/発表者名: Dang Vu The、Shishido Hiroaki、Aizawa Kazuya、Oku Takayuki、Oikawa Kenichi、Harada Masahide、Kojima Kenji M.、Miyajima Shigeyuki、Soyama Kazuhiko、Koyama Tomio、Hidaka Mutsuo、Suzuki Soh Y.、Tanaka Manobu M.、Machida Masahiko、Kawamata Shuichi、Ishida Takekazu
  • 雑誌名: Journal of Physics: Conference Series 巻: 2545 ページ: 012019～012019
  • DOI: 10.1088/1742-6596/2545/1/012019
  • 査読あり / オープンアクセス / 国際共著
• [雑誌論文] Orientation mapping of YbSn₃ single crystals based on Bragg-dip analysis using a delay-line superconducting sensor (2023)
  • 著者名/発表者名: Shishido Hiroaki、Vu The Dang、Aizawa Kazuya、Kojima Kenji M.、Koyama Tomio、Oikawa Kenichi、Harada Masahide、Oku Takayuki、Soyama Kazuhiko、Miyajima Shigeyuki、Hidaka Mutsuo、Suzuki Soh Y.、Tanaka Manobu M.、Kawamata Shuichi、Ishida Takekazu
  • 雑誌名: Journal of Applied Crystallography 巻: 56 ページ: 1108～1113
  • DOI: 10.1107/S1600576723005204
  • 査読あり / 国際共著
• [雑誌論文] Crystalline Orientation of CaF₂ window determined by Neutron Transmission Imaging using a Delay Line Current-Biased Kinetic-Inductance Detector (2023)
  • 著者名/発表者名: Shishido Hiroaki、Dang Vu The、Aizawa Kazuya、Kojima Kenji M.、Koyama Tomio、Oikawa Kenichi、Harada Masahide、Oku Takayuki、Soyama Kazuhiko、Miyajima Shigeyuki、Hidaka Mutsuo、Suzuki Soh Y.、Tanaka Manobu M.、Kawamata Shuichi、Ishida Takekazu
  • 雑誌名: Journal of Physics: Conference Series 巻: 2545 ページ: 012020～012020
  • DOI: 10.1088/1742-6596/2545/1/012020
  • 査読あり / オープンアクセス / 国際共著
• [学会発表] Application of energy-resolving neutron imaging to major-component analyses of materials using four-channel superconducting detector (2023)
  • 著者名/発表者名: The Dang Vu, Hiroaki Shishido, Kazuya Aizawa, Takayuki Oku, Kenichi Oikawa, Masahide Harada, Kenji M. Kojima, Shigeyuki Miyajima, Kazuhiko Soyama, Tomio Koyama, Mutsuo Hidaka, Soh Y. Suzuki, Manobu M. Tanaka, Masahiko Machida, Shuichi Kawamata, Takekazu Ishida
  • 学会等名: The 4th International Conference on Engineering Physics, MEMS-Biosensors and Applications (4th ICEBA2023)
  • 国際学会 / 招待講演
• [学会発表] Neutron transmission imaging system with a superconducting kinetic inductance detector (2023)
  • 著者名/発表者名: The Dang Vu, Hiroaki Shishido, Kazuya Aizawa, Takayuki Oku, Kenichi Oikawa, Masahide Harada, Kenji M. Kojima, Shigeyuki Miyajima, Kazuhiko Soyama, Tomio Koyama, Mutsuo Hidaka, Soh Y. Suzuki, Manobu M. Tanaka, Masahiko Machida, Shuichi Kawamata, Takekazu Ishida
  • 学会等名: The 36th International Symposium on Superconductivity (ISS2023)
  • 国際学会
• [学会発表] Neutron Transmission CB-KID Imager Using Samples Placed at Room Temperature (2023)
  • 著者名/発表者名: Ishida Takekazu、Vu The Dang、Shishido Hiroaki、Aizawa Kazuya、Oku Takayuki、Oikawa Kenichi、Harada Masahide、Kojima Kenji M.、Miyajima Shigeyuki、Koyama Tomio、Soyama Kazuhiko、Hidaka Mutsuo、Suzuki Soh Y.、Tanaka Manobu M.、Machida Masahiko、Kawamata Shuichi
  • 学会等名: LTD20, the 20th International Conference on Low Temperature Detectors, Daejeon, South Korea, July 23-28, 2023.
  • 国際学会
• [学会発表] High-resolution Neutron Imaging under Pulsed Neutrons using Superconducting Detector (2023)
  • 著者名/発表者名: Ishida Takekazu、Vu The Dang、Shishido Hiroaki、Aizawa Kazuya、Oku Takayuki、Oikawa Kenichi、Harada Masahide、Kojima Kenji M.、Miyajima Shigeyuki、Koyama Tomio、Soyama Kazuhiko、Hidaka Mutsuo、Suzuki Soh Y.、Tanaka Manobu M.、Machida Masahiko、Kawamata Shuichi
  • 学会等名: The 18th International Superconductive Electronics Conference (ISEC 2023) Nanjing, China, fNov. 10th - 13th, 2023
  • 国際学会 / 招待講演
• [学会発表] Neutron transmission imaging of room-temperature samples by a superconducting detecto (2023)
  • 著者名/発表者名: Ishida Takekazu、Vu The Dang、Shishido Hiroaki、Aizawa Kazuya、Oku Takayuki、Oikawa Kenichi、Harada Masahide、Kojima Kenji M.、Miyajima Shigeyuki、Koyama Tomio、Soyama Kazuhiko、Hidaka Mutsuo、Suzuki Soh Y.、Tanaka Manobu M.、Machida Masahiko、Kawamata Shuichi
  • 学会等名: The 11th East Asia Symposium on Superconductor Electronics (EASSE 2023) in Okayama, 27-29 March 2023
  • 国際学会 / 招待講演