2012 Fiscal Year Final Research Report

Development of high time resolution and long size sandwich type gamma detector

Research Project

Project/Area Number	22540304
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	Particle/Nuclear/Cosmic ray/Astro physics
Research Institution	Yamagata University
Principal Investigator	TAJIMA Yasuhisa 山形大学, 基盤教育院, 准教授 (50311577)
Project Period (FY)	2010 – 2012
Keywords	素粒子(実験) / 放射線 / X線 / 粒子線
Research Abstract	Multi Pixel Photon Counters (MPPC) are added to a long-size sandwich-type gamma detector, which is read out with wavelength shifting fiber (WLSF), to get high time resolution. From the beam experiment, good time resolution pre-amplifiers are needed to read MPPCs for the present time. We measured position dependencies of the light yield of WLSF. From the results, we established reconstruct particle position from light yields of WLSFs. Attenuation lengths of 3 kinds of WLSFs were measured. We selected best fibers for the detector, and basic parameters were got to make a new detector.