R&D for the LArTPC detector

2017 Fiscal Year Final Research Report

• Project Area: Unification and Development of the Neutrino Science Frontier
• Project/Area Number: 25105008
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: High Energy Accelerator Research Organization
• Principal Investigator: Maruyama Takasumi 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, 准教授 (80375401)
• Co-Investigator(Kenkyū-buntansha): 坂下 健 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, 研究機関講師 (50435616)
• Co-Investigator(Renkei-kenkyūsha): NARITA Shinya 岩手大学, 工学部, 教授 (80322965) ; IKENO Masahiro 高エネルギー加速器研究機構, 素粒子原子核研究所, 技師 (40391718) ; YAMANOI Yutaka 高エネルギー加速器研究機構, 素粒子原子核研究所, 先任技師 (90391739)
• Project Period (FY): 2013-06-28 – 2018-03-31
• Keywords: ニュートリノ

Outline of Final Research Achievements

We developed the cost effective and low noise ASIC in LAr temperature for the charge readout. The good purity (<0.3ppb) was kept during 3 months with our developed purification system, and the monitor using the ultra-violet scintillation light was also developed. The high voltage system with Cockcroft-Walton gave >30 kV. The FEM and cosmic ray data provided further understandings of this HV system. These R&D were also verified by the 70tons detector of the CERN WA105.
For the charged particle test-beam, we joined the LArIAT (LArTPC In A Test-beam). We accumulated the 1800000 events for pi/K/mu/p/e in the 1 ton LArTPC during 2015-2017. The data is used to understand the feasibility of the future experiments with large LArTPCs as well as the current LArTPC experiments' systematic uncertainties.
With these results, we can consider 100 tons LArTPC experiments in Japan. Our developed ASIC, the software and simulation tools in the LArIAT can be used for other experiments.

Free Research Field

素粒子実験分野