Presentation Information
[9p-N221-13]Response characteristics of a photonic charge sensor to alpha radiation
〇Wataru Takahama1,2, Kohtaku Suzuki3, Yasuki Okuno4, Ayumi Ishihara1,2, Rikuto Ichinose1, Yuta Kanemaru1, Shoei Yamasaki1, Yasushi Takahashi1,2 (1.Osaka Met. Univ., 2.Okayama Univ., 3.The Wakasa Wan Energy Research Center, 4.RIKEN RAP)
Keywords:
space,photonic crystal,alpha
We have been studying space charge detection technology using silicon photonic crystals. This technology detects space charge by using free carrier absorption that occurs in the photonic crystal due to space charge. Compared to conventional sensors, this technology does not use electrical technology as a detection mechanism, so it is resistant to radiation and electrostatic discharge. Furthermore, since the sensor module can be expected to be miniaturized, it is considered suitable for use in space, where space charge has been a long-standing issue. Therefore, we aim to develop a photonic charge sensor module incorporating a photonic crystal waveguide chip and apply it to potential measurement and radiation measurement on spacecraft. So far, we have confirmed plasma detection in a vacuum and high resistance to proton beam irradiation. In this study, we investigated the response characteristics to alpha ray irradiation, one of the major cosmic radiations, and investigated the application of the module to neutron beam detection sensors required for BNCT treatment, which is one of the radiation cancer treatment methods.