[16p-K501-1~19] 2.2 Radiation generators, Detector development, Measurement technology

4:30 PM - 4:45 PM JST(7:30 AM - 7:45 AM UTC)

[16p-K501-13] Measurement of neutron directions using the fast-neutron imager at high-energy accelerator facilities

〇Toru Matsumura¹, Koji Shiomi², Hajime Nanjo³, Tadashi Nomura², GeiYoub Lim², Hiroaki Watanabe² (1.NDA, 2.KEK IPNS, 3.Osaka Univ.)

Keywords:

neutron measurement

To identify the neutron background source in high-energy accelerator facilities, measurement of neutron directions was performed at the top of the concrete shield above the KL experimental area at J-PARC. A fast-neutron imager consisting of 17 pieces of lithium glass and a polyethylene moderator was used as a neutron detector. Neutrons passing upward from below the concrete shield were observed by measuring for 10 minutes with a beam intensity of 81 kW, demonstrating that the fast-neutron imager can be used to identify the neutron source in high-energy accelerator facilities.