2016 Fiscal Year Final Research Report
Differential Cerenkov Detector for High-momentum Secondary Particles
| Project/Area Number |
26400289
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Kyoto University |
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Principal Investigator |
NARUKI Megumi 京都大学, 理学研究科, 准教授 (00415259)
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| Research Collaborator |
YAMAGA Takumi
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | バリオン分光 / Ξ粒子 / ハドロン反応 |
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| Outline of Final Research Achievements |
A RICH type detector has been developed to identify secondary beam particles for the high-momentum beam line at the J-PARC Hadron Facility. It enable us to study cascade baryons systematically which are produced with a 4 GeV/c kaon beam.
The production rate of beam pions are higher by three orders of magnitude compared with that of kaons. Therefore, a differential Cerenkov detector is needed to actively identify beam kaons. At the beam momentum of 4 GeV/c, a suitable radiator are aerogels with an refractive index of 1.05. The Cerenkov ring image is detected with Multi-Pixel Photon Counter (MPPC). As a result of a beam test for a prototype detecter, the Cerenkov angle resolution of 3mradian was achieved to demonstrate that beam kaons are separated from pions with 8sigma sensitivity.
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| Free Research Field |
ハドロン物理
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