Title: Development of remote-operating liquid multilayer neutron spectrometer for boron neutron capture therapy
With great joy, we would like to invite you to the 9th BNCT International Webinar. Dr. Prateepkaew will share his PhD research on a remotely-operated liquid multilayer neutron spectrometer (CHARMS) for rapid BNCT quality assurance, validated at the Kyoto University Reactor.
The webinar will be held virtually (zoom platform), on June 23rd, 2026, at 10:00 UTC. It will be a 45-minute webinar: 30 minutes exposition + 15 minutes discussion. We will have to stick to the time because participants will be from all over the world!
LINK TO THE ZOOM AND INFORMATION:
Topic: ISNCT’s Zoom Meeting
Time: Jun 23, 2026 09:45 AM Universal Time UTC
Join Zoom Meeting
https://us06web.zoom.us/j/83947559509?pwd=xMOuaAd3BwEBuOGubJluq0r7N0OpVB.1
Meeting chat link
https://us06web.zoom.us/launch/jc/83947559509
Meeting ID: 839 4755 9509
Passcode: 424226
Name: Jakkrit Prateepkaew
Title: Development of remote-operating liquid multilayer neutron spectrometer for boron neutron capture therapy
Abstract:
Neutron energy spectra can vary over time, making spectrum measurement important for BNCT quality assurance (QA). However, conventional methods are often complex and time-consuming. This study developed and validated a remote-operating neutron spectrometer, the Cylindrical Hemisphere Accurate Remote Multilayer Spectrometer (CHARMS), for rapid BNCT QA. CHARMS uses a active neutron detector surrounded by three liquid moderator layers controlled through a liquid injection and drainage system. The prototype was optimized by simulation and tested at the Kyoto University Reactor (KUR) using seven moderator injection patterns. The system achieved neutron count uncertainties below 1% within 10 minutes and successfully evaluated neutron energy spectra under uncollimated irradiation conditions. These results demonstrate the feasibility of CHARMS for BNCT QA, with future work focusing on collimated irradiation conditions for clinical applications.
Biography:
Received the Thai Royal Government Scholarship in 2015 to pursue higher education in Japan. Completed a Ph.D. in Nuclear Engineering at the Graduate School of Engineering, Kyoto University in March 2026. The doctoral research focused on the development of a remote-operating liquid multilayer neutron spectrometer for boron neutron capture therapy. Following the completion of the Ph.D. program in Japan, returned to Thailand and currently serves as a lecturer at the School of Physics, Institute of Science, Suranaree University of Technology, Thailand.