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2022 Fiscal Year Research-status Report

Operating principle of the superconducting neutron detector

Research Project

Project/Area Number 21K14566
Research InstitutionOsaka Metropolitan University

Principal Investigator

VU THEDANG  大阪公立大学, 大学院工学研究科, 特任助教 (60826121)

Project Period (FY) 2021-04-01 – 2024-03-31
KeywordsCB-KID / Neutron detector / Wood's metal / Temperature stability / Spatial resolution
Outline of Annual Research Achievements

We improved the stability of temperature of neutron detector better than 80uK at 5K, which gives an error in velocity lower than ±160 m/s (0.0002%) [1] under optimized PID conditions of two control loops using a Cryocon 54. This reduced the influence of velocity error to spatial resolution at near edges of detector [2]. Based on it, we built a new cryostat system to be able to mount room-temperature samples . This is in marked contrast with the former cryostat in conducting the experiments under pulsed neutrons. Especially, it performs a very high-resolution imaging because a sample is placed at the close vicinity of the CB-KID detector at a cryogenic temperature. Therefore, we can investigate various samples in a single beam time such as FeS2 ammonite, Fe2O3 ammonite, CaF2 [3], CuAl-glads, Li Grease, LiPS, etc.. This is also suitable to apply different conditions on sample during beam time, i.e., temperature, electrics, compression traction force, etc. to reveal many properties of material. We confirmed a sequential change in phase separations of low melting Wood’s metal by melting and re-solidification [1]. Neutron image becomes clearer by convenient open-beam normalization to avoid inhomogeneity beam condition and Boron conversion layer.
[1] T. D. Vu, et al., Journal of Physics: Conference Series in press.
[2] T. D. Vu, et al., The 3rd International Workshop on Engineering Physics, IC-MEMS-Sensors and Their Applications, HCM city, Viet Nam, November 25&26, 2022, Invited talk.
[3] H. Shishido, T. D. Vu et al., Journal of Physics: Conference Series in press.

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

Most targets of the project were conducted rather successfully.

Strategy for Future Research Activity

Most of the research plans have been completed rather well so far. However, achievements have not been published thoroughly yet. We consider that our achievements should be published in the next fiscal year. We plan to present our results at the conferences in the field, too. Regarding the operation principle of the detector, we still have a difficulty that a spatial resolution is limited by a temporal resolution because the current readout circuit Kalliope-DC can not distinguish a repetition period of the meanderline 1.5um. This is simply due to a temporal resolution of 1ns. We plan to develop a readout circuit of tempral resolution of 30ps. This will improve the spatial resolution down to 1.5um.

Causes of Carryover

Achievements of fiscal 2022 should be presented in the conferences and the papers. In addition they should be summarized in fiscal 2023. Therefore, we have to transfer some of budget to fiscal 2023.

  • Research Products

    (5 results)

All 2023 2022

All Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (3 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Journal Article] Superconducting neutron transmission imaging for investigating a sequential change in phase separations of low melting Wood’s metal2023

    • Author(s)
      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 and Takekazu Ishida
    • Journal Title

      Journal of Physics: Conference Series in press

      Volume: - Pages: -

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Crystalline Orientation of CaF2 window determined by Neutron Transmission Imaging using a Delay Line Current-Biased Kinetic-Inductance Detector2023

    • Author(s)
      Hiroaki Shishido, The Dang Vu , Kazuya Aizawa , Kenji M. Kojima , Tomio Koyama , Kenichi Oikawa, Masahide Harada , Takayuki Oku, Kazuhiko Soyama, Shigeyuki Miyajima , Mutsuo Hidaka , Soh Y. Suzuki, Manobu M. Tanaka , Shuichi Kawamata and Takekazu Ishida
    • Journal Title

      Journal of Physics: Conference Series in press

      Volume: - Pages: -

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Experimental Studies on Spatial Resolution of a Delay-Line Current-Biased Kinetic-Inductance Detector2022

    • Author(s)
      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 and Takekazu Ishida
    • Organizer
      the 3rd International Workshop on Engineering Physics, IC-MEMS-Sensors and Their Applications, HCM city, Viet Nam, November 25&26, 2022
    • Int'l Joint Research / Invited
  • [Presentation] Superconducting neutron transmission imaging for investigating a sequential change in phase separations of low melting Wood’s metal2022

    • Author(s)
      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 and Takekazu Ishida
    • Organizer
      The 35th International Symposium on Superconductivity (ISS2022)
    • Int'l Joint Research
  • [Presentation] Crystalline Orientation of CaF2 window determined by Neutron Transmission Imaging using a Delay Line Current-Biased Kinetic-Inductance Detector2022

    • Author(s)
      Hiroaki Shishido, The Dang Vu , Kazuya Aizawa , Kenji M. Kojima , Tomio Koyama , Kenichi Oikawa, Masahide Harada , Takayuki Oku, Kazuhiko Soyama, Shigeyuki Miyajima , Mutsuo Hidaka , Soh Y. Suzuki, Manobu M. Tanaka , Shuichi Kawamata and Takekazu Ishida
    • Organizer
      The 35th International Symposium on Superconductivity (ISS2022)
    • Int'l Joint Research

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Published: 2023-12-25  

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