Study on the origin of hadron mass at J-PARC

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H05449
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: High Energy Accelerator Research Organization
• Principal Investigator: Aoki Kazuya 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 助教 (70525328)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 原子核物理学実験 / GEM / HBD / チェレンコフ検出器

Outline of Final Research Achievements

To investigate the origin of hadron mass at J-PARC Hadron Experimental Facility, we plan to conduct an experiment named J-PARC E16 experiment. An excellent electron identification detector is required for the experiment. Therefore, we have build a set of Hadron Blind Detector (HBD) which can be used for the real experiment. Problems found during the production have been solved. The distortion of the aluminum-made HBD chamber caused by welding was suppressed using specially-designed jig. Local defects found in photocathode which could cause break down of the entire photocathode were successfully isolated with laser etching. We've developed an easy-to-do procedure for quality assurance of produced GEM foils. We've evaluated the performance of a prototype and published the results. Based on the achievements of this study, we've written Technical Design Report and submitted it to J-PARC Program Advisory Committee (PAC). PAC has recommended stage-2 approval for the experiment.

Free Research Field

原子核物理学実験