日本地球惑星科学連合2019年大会

講演情報

[E] ポスター発表

セッション記号 P (宇宙惑星科学) » P-EM 太陽地球系科学・宇宙電磁気学・宇宙環境

[P-EM13] 内部磁気圏

2019年5月29日(水) 15:30 〜 17:00 ポスター会場 (幕張メッセ国際展示場 8ホール)

コンビーナ:海老原 祐輔(京都大学生存圏研究所)、Danny Summers(Memorial University of Newfoundland)、三好 由純(名古屋大学宇宙地球環境研究所)、齊藤 慎司(名古屋大学 大学院理学研究科)

[PEM13-P28] Particle simulation for calibrating the HEP data onboard the ARASE satellite

*PARK INCHUN1三好 由純1三谷 烈史2堀 智昭1栗田 怜1寺本 万里子1高島 健2東尾 奈々3篠原 育2 (1.名古屋大学宇宙地球環境科学研究所、2.宇宙航空研究開発機構宇宙科学研究所、3.宇宙航空研究開発機構)

キーワード:あらせ、Geant4、HEP

Understanding the detailed characteristics of the HEP (High-Energy electron Experiment) instrument onboard the Arase satellite is crucial for data calibration. Due to difficulties of reproducing the severe radiation environment of the inner magnetosphere on the ground, computer simulation is the best method to understand instrument responses to the ambient radiation environment. Through Monte-Carlo simulations using the Geant4 tool, we have reconstructed the geometry of the HEP instrument and modeled the high-energy particle environment. Using the developed model, we have studied the efficiency of the detectors, the angular resolution, and the g-factors, which depend on the particle energy and the sensor channels. While the previous studies were based on a uni-direction simulation with electron pencil beams, this study adopted all the detector channels and energy bends of HEP thus resulting in more advanced simulations. Based on the results, we have made a new calibration table depending on the angle of incident particles. We have also estimated the g-factor which depends on the incident particle energy. The updated calibration table and g-factors are important for calibrating the HEP data as well as inter-calibrations with other particle instruments’ data.