Title of article
A gamma ray detector with lead-scintillator tiles and WLS fiber readout for the experiment at SPring-8 to study the GDH sum rule
Author/Authors
Daito، نويسنده , , I and Geso، نويسنده , , M and Hasegawa، نويسنده , , S and Horikawa، نويسنده , , N and Ichihara، نويسنده , , H and Iwata، نويسنده , , T and Kondo، نويسنده , , K and Menze، نويسنده , , D and Miyachi، نويسنده , , Y and Nakayama، نويسنده , , H and Tanoshima، نويسنده , , S and Wakai، نويسنده , , A، نويسنده ,
Pages
12
From page
188
To page
199
Abstract
A prototype gamma ray detector for the detection of π0 in the proposed experiment at SPring-8 to study the Gerasimov–Drell–Hearn (GDH) sum rule (GDH experiment) has been built and tested. The detector is fabricated with lead-scintillator tiles and wave length shifter fiber readout. This detector will be placed inside the bore of the superconducting magnet which supplies the polarized target with a 2.5 T magnetic field. High-detection efficiency (above 85%) for the gamma rays is the most important requirement for this detector to be employed in the proposed experiment. It has been tested with minimum ionizing particles, electrons and gamma rays. The results of the tests in comparison with some Monte Carlo simulations are presented. The evaluated efficiency for gamma rays ranging in energy above 50 MeV is higher than 90%.
Keywords
Lead-scintillator tiles , Gamma ray detector , WLS fibers
Journal title
Astroparticle Physics
Record number
2018865
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