Bulletin of the American Physical Society
5th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Volume 63, Number 12
Tuesday–Saturday, October 23–27, 2018; Waikoloa, Hawaii
Session HA: Conference Experience for Undergraduates Poster Session (2:00pm - 3:45pm)
2:00 PM,
Friday, October 26, 2018
Hilton
Room: Grand Promenade
Abstract ID: BAPS.2018.HAW.HA.2
Abstract: HA.00002 : Resolution measurement of next generation scintillator GAGG at high energy using the 992 keV resonance of the 27Al(p,γ)28Si reaction
Presenter:
Natsumi Ogawa
(Department of Physics, The University of Tokyo)
Authors:
Natsumi Ogawa
(Department of Physics, The University of Tokyo)
Tomohito Amano
(Department of Physics, The University of Tokyo)
Wren Yamada
(Department of Physics, The University of Tokyo)
Tokihiro Ikeda
(RIKEN Nishina Center)
Takuma Koiwai
(Department of Physics, The University of Tokyo)
Megumi Niikura
(Department of Physics, The University of Tokyo)
Hiroyoshi Sakurai
(Department of Physics, The University of Tokyo)
Kathrin Wimmer
(Department of Physics, The University of Tokyo)
For in-beam γ-ray spectroscopy experiments with fast beams, the resolution after Doppler correction depends strongly on the position and energy resolution of γ-ray detectors. Scintillator based detector arrays usually have rather low energy and position resolution. For experiments at RIKEN RIBF a new detector array based on cerium doped Gd3Al2Ga3O12, or GAGG(Ce), crystals is being developed. The prime objective of this research project is to measure the energy resolution of the GAGG especially for high energy γ-rays. To produce these high energy γ-rays, the 27Al(p,γ)28Si reaction was used. The experiment was performed at the RIKEN Pelletron which provides proton beams up to 3 MeV. Four GAGGs, including the biggest crystal with a size of 35mm*35mm*100mm, and 9 NaI crystals of the existing detector array, DALI2, were arranged around the 27Al target. Different combinations of PMTs and GAGG detector geometries were employed for the test experiment. Standard calibration sources, and γ-ray transitions from resonances in 28Si up to 10.5 MeV were used to determine the energy resolution of GAGG detectors coupled with various types of PMTs. In this presentation we show the current status of the data analysis and first results on the performance of GAGG as a detector for high energy γ-rays.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.HAW.HA.2
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