Tamaki Shingo, Kusaka Sachie, Sato Fuminobu, Murata Isao
Graduate School of Engineering, Osaka University, Yamada-oka, Suita, Osaka, Japan.
Research Fellow of Japan Society for the Promotion of Science, Kojimachi, Chiyoda-ku, Tokyo, Japan.
Radiat Prot Dosimetry. 2018 Aug 1;180(1-4):300-303. doi: 10.1093/rpd/ncx237.
Boron neutron capture therapy is known to be an effective radiation cancer therapy that requires neutron irradiation. A neutron field generated by an accelerator-based neutron source has various energy spectra, and it is necessary to evaluate the neutron spectrum in the treatment field. However, the method used to measure the neutron spectrum in the treatment field is not well established. Many researchers are making efforts to improve the spectrometers. To solve this problem, we are developing a liquid-moderator-based neutron spectrometer that is based on the same theory as that of the Bonner sphere spectrometer. The spectrometer uses a liquid moderator and absorber. In the present study, we performed a design study to improve the previously developed liquid-moderator-based neutron spectrometer. By carrying out a numerical simulation of the designed new spectrometer, we finally assessed and confirmed the validity of this spectrometer numerically.
硼中子俘获疗法是一种已知的需要中子辐照的有效放射癌症治疗方法。基于加速器的中子源产生的中子场具有各种能谱，因此有必要评估治疗区域内的中子能谱。然而，用于测量治疗区域内中子能谱的方法尚未完善。许多研究人员正在努力改进光谱仪。为了解决这个问题，我们正在开发一种基于液体慢化剂的中子光谱仪，其原理与邦纳球光谱仪相同。该光谱仪使用液体慢化剂和吸收体。在本研究中，我们进行了一项设计研究，以改进之前开发的基于液体慢化剂的中子光谱仪。通过对设计的新光谱仪进行数值模拟，我们最终在数值上评估并确认了该光谱仪的有效性。
