High resolution gamma-ray spectrometer with MHz capabilities for runaway electron studies at ASDEX Upgrade

M. Nocente*, A. Shevelev, L. Giacomelli, G. Pautasso, M. Tardocchi, D. Gin, M. Gobbin, G. Gorini, A. Fernandes, A. Herrmann, E. Khilkevitch, E. Panontin, G. Papp, R. C. Pereira, Mirko Salewski, G. Tardini, M. Valisa

*Corresponding author for this work

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Abstract

A new gamma-ray spectrometer with MHz capabilities has been developed to measure the bremsstrahlung emission spectrum in the gamma-ray energy band generated by MeV range runaway electrons in disruption experiments at ASDEX Upgrade. Properties of the runaway electrons are inferred from the measured bremsstrahlung spectrum by a deconvolution technique, particularly with regard to their maximum energy. Changes induced to the runaway electron velocity space are unambiguously observed both in massive gas injection and resonant magnetic perturbation experiments with the detector.
Original languageEnglish
Article number10I124
JournalReview of Scientific Instruments
Volume89
Issue number10
Number of pages5
ISSN0034-6748
DOIs
Publication statusPublished - 2018

Keywords

  • Fusion Products, Energetic Particles, Particle Measurements, and Neutrals

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