Search

第7回宇宙環境シンポジウム (2010年10月19日-20日. 東京国際フォーラム), 7th Spacecraft Enivironment Symposium (October 19-20, 2010, Tokyo International Forum), Tokyo Japan, 形態: カラー図版あり, 著者人数: 13人, Physical characteristics: Original contains color illustrations, 資料番号: AA0064933006, レポート番号: JAXA-SP-10-013

The 5th Gerant4 Space Users' Workshop (University of Tokyo, 13-15 February 2008), Physical characteristics: Original contains color illustrations, 資料番号: AA0064304028, レポート番号: JAXA-SP-08-010E

The current status of measuring radiation using JAXA satellites is reviewed. Starting with Engineering Test Satellite-5 (ETS-5; KIKU-5 in Japanese) in 1987, efforts to conduct radiation measurements in space have continued using almost all Japan Aerospace Exploration Agency (JAXA formerly NASDA) satellites (ETS-6 (Engineering Test Satellite-6: KIKU-6), ADEOS (ADvanced Earth Observing Satellite: Midori), ADEOS-2 (ADvanced Earth Observing Satellite-2: Midori-2), MDS-1 (Mission Demonstration test Satellite-1: Tsubasa), DRTS (Data Relay Test Satellite: KODAMA)(ongoing) and ETS-8 (Engineering Test Satellite-8: KIKU No.8)(ongoing), and ALOS (Advanced Land Observing Satellite: Daichi)(ongoing)), in Geostationary Orbit (GEO), Geostationary-Transfer Orbit (GTO), and Low-Earth Orbit (LEO). Electrons, protons, alpha particles, and heavy ions have been the main objects of study. Future plans for radiation monitoring in JAXA, including GOSAT (Greenhouse gases Observing SATellite), Jason-2 (in collaboration with CNES), and ISS (International Space Station)/JEM (Japanese Experiment Module)/Exposure Facility/SEDA-AP (Space Environment Data Acquisition equipment-Attached Payload), are presented., 資料番号: AA0063997004, レポート番号: JAXA-SP-07-030

JAXA published the 'JAXA Vision-JAXA 2025-' in March 2005, in which JAXA proposed to prepare for the establishment of a human lunar base. To follow the vision, JAXA started several studies. Recently, in order to contribute the studies, we calculated radiation exposure dose on the lunar surface by using a radiation transportation code, PHITS, developed by Koji Niita (Research organization for Information Science and Technology) et. al. As a result of the calculation, the effective dose equivalent under 10 g/sq cm shielding in the solar minimum condition is around 0.55 mSv/day and one in the solar flare worst day condition is around 70 mSv/day. On the other hand, the effective dose without shielding in the solar minimum condition is around 0.71 mSv/day and one in the solar flare worst day condition is around 4,000 mSv/day. This suggests that the shielding design and the radiation exposure management will be very important for the lunar base design., 資料番号: AA0049500034, レポート番号: JAXA-SP-06-006