Quality assurance validation of remote neutron spectrometer for boron neutron capture therapy

The validity of the CHARMS for QA procedures in BNCT was confirmed. The rapid measurements and stable operation of the liquid moderator injection and drainage system show that CHARMS is well-suited for routine BNCT QA, eliminating the need for moderator replacement and thereby minimizing radiation exposure. Future work will address the challenges related to neutron beam intensity and angular distribution to enable the evaluation of neutron energy spectrum unfolding under collimated irradiation conditions, which is essential for clinical BNCT.