Open AccessDevelopment of a new compact gamma-ray spectrometer optimised for runaway electron measurements
Author(s) -
A. Dal Molin,
L. Martinelli,
M. Nocente,
D. Rigamonti,
A. Abba,
L. Giacomelli,
G. Gorini,
A. Lvovskiy,
A. Muraro,
M. Tardocchi
Publication year - 2018
Publication title -
review of scientific instruments
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.605
H-Index - 165
eISSN - 1089-7623
pISSN - 0034-6748
DOI - 10.1063/1.5038803
Subject(s) - bremsstrahlung , scintillator , spectrometer , physics , electron , gamma ray , detector , photomultiplier , particle detector , range (aeronautics) , nuclear physics , silicon photomultiplier , materials science , optics , composite material
A new compact gamma-ray spectrometer was developed in order to optimise the measurement of bremsstrahlung radiation emitted from runaway electrons in the MeV range. The detector is based on a cerium doped lutetium-yttrium oxyorthosilicate (LYSO:Ce) scintillator coupled to a silicon photomultiplier and is insensitive to magnetic fields. A dedicated electronic board was developed to optimise the signal readout as well as for online control of the device. The detector combines a dynamic range up to 10 MeV with moderate energy non-linearity, counting rate capabilities in excess of 1 MHz, and an energy resolution that extrapolates to a few % in the MeV range, thus meeting the requirements for its application to runaway electron studies by bremsstrahlung measurements in the gamma-ray energy range.
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