Development of MRFQ Cooler Buncher for the Advancement of Unstable Nuclei Research

• Project/Area Number: 24340057
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Rikkyo University
• Principal Investigator: KURITA KAZUYOSHI 立教大学, 理学部, 教授 (90234559)
• Co-Investigator(Kenkyū-buntansha): ENOKIZONO Akitomo 立教大学, 理学部, 助教 (20638118) ; KIKUCHI Takashi 長岡技術科学大学, 工学研究科, 准教授 (30375521) ; WAKASUGI Masanori 国立研究開発法人理化学研究所, 仁科加速器研究センター装置開発室, 室長 (70250107)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥19,370,000 (Direct Cost: ¥14,900,000、Indirect Cost: ¥4,470,000); Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000); Fiscal Year 2013: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000); Fiscal Year 2012: ¥11,700,000 (Direct Cost: ¥9,000,000、Indirect Cost: ¥2,700,000)
• Keywords: 四重極トラップ / 不安定核構造 / 電子散乱 / ISOL / 電子蓄積リング / イオントラップ現象 / バンチャー / 質量分離装置 / イオンバンチャー / 四重極イオントラップ / イオン冷却 / ＭＲＦＱ / 不安定核電子散乱 / イオンクーラー / 放射線 / 加速器 / 原子・分子 / 実験核物理 / 原子・分子物理

Outline of Final Research Achievements

Our goal of this research is to develop a method to increase the density of unstable nuclei ions to realize electron scattering experiments. We have shown experimentally that ions can be trapped inside the electron beam stored in an synchrotron and the electron scattering events occur by itself. The final key element of our project is to condense the unstable nuclei ions. We have utilised the fringing field effect of an RFQ trap and achived about half of the ion density which we originally aimed at.