@inproceedings{oai:jaxa.repo.nii.ac.jp:00005103, author = {岸本, 祐二 and 郡司, 修一 and 田中, 佑麿 and 林田, 清 and 山内, 学 and 穴吹, 直久 and 三原, 建弘 and 斎藤, 芳隆 and 小浜, 光洋 and Kishimoto, Yuji and Gunji, Shuichi and Tanaka, Yuma and Hayashida, Kiyoshi and Yamauchi, Manabu and Anabuki, Naohisa and Mihara, Tatehiro and Saito, Yoshitaka and Kohama, Mitsuhiro and PHENEX group}, book = {宇宙航空研究開発機構特別資料:, JAXA Special Publication: The Energetic Cosmos; from Suzaku to ASTRO-H}, month = {Feb}, note = {The 3rd Suzaku international Conference "Energetic Cosmos : from Suzaku to ASTRO-H" (June 29-July 2, 2009. Grand Park Otaru Hotel), Otaru, Hokkaido Japan, We have been developing a hard X-ray polarimeter with high sensitivity, called as a PHENEX (Polarimetry for High ENErgy X-rays) polarimeter. We constructed prototype PHENEX polarimeter and carried out a preliminary observation of the Crab Nebula on June 13th, 2006 as a balloon-borne experiment. Though we confirmed from the data that PHENEX polarimeter detected hard X rays from the Crab Nebula with a significance of 8 sigma, the degree and the direction of polarization with high accuracy could not be determined because of the trouble for attitude control system (ACS) and the small detection area of the prototype polarimeter. We improved the PHENEX polarimeter and carried out a balloon-borne experiment in June 2009 launching from Taiki Aerospace Research Field to observe the polarization of the Crab Nebula with higher accuracy. In this paper, we will report the summary of this experiment., Meeting sponsors: The University of Tokyo, The Institute of Physical and Chemical Research, The Japan Society for the Promotion of Science, 資料番号: AA0064574171, レポート番号: JAXA-SP-09-008E}, pages = {438--439}, publisher = {宇宙航空研究開発機構, Japan Aerospace Exploration Agency (JAXA)}, title = {Summary of PHENEX Balloon-borne Experiment in 2009}, volume = {JAXA-SP-09-008E}, year = {2010} }