Application of high energy particle induced gamma ray diagnostic to burning plasma experiments

2014 Fiscal Year Final Research Report

• Project/Area Number: 24360384
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Nuclear fusion studies
• Research Institution: The University of Tokyo (2013-2014); National Institute for Fusion Science (2012)
• Principal Investigator: NISHIURA Masaki 東京大学, 新領域創成科学研究科, 准教授 (60360616)
• Co-Investigator(Kenkyū-buntansha): NAGASAKA Takuya 核融合科学研究所, ヘリカル研究部, 准教授 (40311202) ; FUJIMOTO Yasushi 大阪大学, レーザーエネルギー学研究センター, 講師 (70343241) ; TANIIKE Akira 神戸大学, 海事科学研究科, 准教授 (50283916) ; YAMAOKA Hitoshi 理化学研究所, 放射光科学総合研究センター, 専任研究員 (30239850) ; MATSUMOTO Yoshikatsu 徳島文理大学, 人間生活学部, 講師 (50441598) ; TANAKA Teruya 核融合学研究所, ヘリカル研究部, 准教授 (30353444) ; KISAKI Masashi 核融合学研究所, ヘリカル研究部, 助教 (70598945) ; SHIMAZOE Kenji 東京大学, 大学院工学研究科, 助教 (70589340)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: アルファ粒子 / 核融合 / ガンマ線 / 耐放射線 / 中性子 / イメージ / プラズマ計測 / 多チャンネル検出器

Outline of Final Research Achievements

The purpose of this research is to study 3.5MeV alpha particle confinement and its physics created by DT reaction in burning plasmas. For the diagnostic of alpha particle loss to a first wall in a fusion reactor, we proposed and developed an alpha particle induced gamma ray spectroscopy. A pixel detector has been developed to acquire 4.44MeV gamma ray from the reaction of Be-alpha. We measured the gamma ray image successfully using it. Simultaneously a Ge detector detected the high resolution energy spectrum of 4.44 MeV gamma ray. We found that the spectrum has an angular dependence of the Doppler broadening strongly.

Free Research Field

プラズマ物理，核融合