Characterization of Germanium Detectors for the Measurement of the Angular Distribution of Prompt gamma-rays at the ANNRI in the MLF of the J-PARC

Shusuke Takada , Takuya Okudaira , Fumiya Goto , Katsuya Hirota , Atsushi Kimura , Masaaki Kitaguchi , Jun Koga , Taro Nakao

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Kenji Sakai Hirohiko M. Shimizu Tomoki Yamamoto Tamaki Yoshioka

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classification ⚛️ physics.ins-det

keywords measurementgamma-raysangularannridistributiongermaniumj-parcsimulation

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In this study, the germanium detector assembly, installed at the Accurate Neutron-Nuclear Reaction measurement Instruments (ANNRI) in the Material and Life Science Facility (MLF) operated by the Japan Proton Accelerator Research Complex (J-PARC), has been characterized for extension to the measurement of the angular distribution of individual gamma-ray transitions from neutron-induced compound states. We have developed a Monte Carlo simulation code using the GEANT4 toolkit, which can reproduce the pulse-height spectra of gamma-rays from radioactive sources and (n,gamma) reactions. The simulation is applicable to the measurement of gamma-rays in the energy region of 0.5-11.0 MeV.

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Characterization of Germanium Detectors for the Measurement of the Angular Distribution of Prompt gamma-rays at the ANNRI in the MLF of the J-PARC

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