Tomographic reconstruction of the shape and dimensions of LaBr3 scintillator crystals at IMAT

Dr Enrico Perelli Cippo, Dr Marica Rebai, Dr Anna Fedrigo, Dr Davide Rigamonti, Dr Marco Tardocchi, Dr Luca Giacomelli & Mr Oscar Putignano
A recent project has started to provide JET (and in the future ITER tokamak) of a second real time diagnostic for fusion power, measuring the absolute intensity of the 16.7 MeV gamma line from D-T reaction. This diagnostic requires ABSOLUTE EFFICIENCY calibration of the used detector, and thus accurate measurement of the detector sensitive volume. LaBr3 detectors are the best option for high-energy gamma-ray monitoring in neutron-rich environments, but they are provided in sealed mounts...
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