Study of beam loss protons with scintillating fibers

2014 Fiscal Year Final Research Report

• Project/Area Number: 24510134
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Quantum beam science
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: SAKO HIROYUKI 独立行政法人日本原子力研究開発機構, 原子力科学研究部門 先端基礎研究センター, 研究主幹 (40282298)
• Co-Investigator(Renkei-kenkyūsha): MARUTA Tomofumi 大学共同利用機関法人高エネルギー加速器研究機構, 加速器研究施設, 助教 (90451509) ; MIURA Akihiko 独立行政法人日本原子力研究開発機構, 原子力科学研究部門 J-PARCセンター, 研究員 (90421742) ; KONSTANTINOVA Olga 大学共同利用機関法人高エネルギー加速器研究機構, 加速器研究施設, 博士研究員 (00734568)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: シンチレーションファイバー / ビームロス / J-PARC

Outline of Final Research Achievements

At J-PARC linac, beam loss due to H0 is a serious problem. It is required to evaulate the beam loss level quantitatively. The main beam loss source is an H0 produced by interaction of an H- beam ion with residual gas. In this work, we developed an additional schitillation fiber detector, and a remote position control system. We observed trajectories of charged particles, and identify them as protons with the time-of-flight measurements. We succeeded in measuring absolute rates of protons, and their angular distributions, and energy.

Free Research Field

加速器科学