2023 Fiscal Year Research-status Report
Toward sub-micrometer neutron transmission imaging with novel 8-terminal kinetic inductance detector
| Project/Area Number |
23K13690
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| Research Institution | Osaka Metropolitan University |
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Principal Investigator |
VU THEDANG 大阪公立大学, 大学院工学研究科, 特任助教 (60826121)
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| Project Period (FY) |
2023-04-01 – 2025-03-31
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| Keywords | Neutron detector / CBKID / Neutron image / Kalliope / spatial resolution / Time resolution |
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| Outline of Annual Research Achievements |
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.
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
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.
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| Strategy for Future Research Activity |
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.
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| Causes of Carryover |
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.
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[Presentation] Application of energy-resolving neutron imaging to major-component analyses of materials using four-channel superconducting detector2023
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, Takekazu Ishida
Organizer
The 4th International Conference on Engineering Physics, MEMS-Biosensors and Applications (4th ICEBA2023)
Int'l Joint Research / Invited
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[Presentation] Neutron transmission imaging system with a superconducting kinetic inductance detector2023
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, Takekazu Ishida
Organizer
The 36th International Symposium on Superconductivity (ISS2023)
Int'l Joint Research
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[Presentation] Neutron Transmission CB-KID Imager Using Samples Placed at Room Temperature2023
Author(s)
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
Organizer
LTD20, the 20th International Conference on Low Temperature Detectors, Daejeon, South Korea, July 23-28, 2023.
Int'l Joint Research
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