A new hard x-ray spectrometer for runaway electron measurements in tokamaks

Dal Molin, A and Nocente, M and Dalla Rosa, M and Panontin, E and Rigamonti, D and Tardocchi, M and Shevelev, A and Khilkevitch, E and Iliasova, M and Giacomelli, L and Gorini, G and Perelli Cippo, E and D’Isa, F and Pautasso, G and Papp, G and Tardini, G and Macusova, E and Cerovsky, J and Ficker, O and Salewski, M and Kiptily, V (2023) A new hard x-ray spectrometer for runaway electron measurements in tokamaks. Measurement Science and Technology, 34 (8). 085501. ISSN 0957-0233

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Official URL: https://doi.org/10.1088/1361-6501/acd46c

Abstract

Runaway electron gamma-ray detection system, a novel hard x-ray (HXR) spectrometer optimized for bremsstrahlung radiation measurement from runaway electrons in fusion plasmas, has been developed. The detector is based on a 1'×1' LaBr3:Ce scintillator crystal coupled with a photomultiplier tube. The system has an energy dynamic range exceeding 20 MeV with an energy resolution of 3% at 661.7 keV. The detector gain is stable even under severe loads, with a gain shift that stays below 3% at HXR counting rates in excess of 1 MCps. The performance of the system enables unprecedented studies of the time-dependent runaway electron energy distribution function, as shown in recent runaway electron physics experiments at the ASDEX Upgrade and COMPASS tokamaks.

Item Type:	Article
Subjects:	STM Library Press > Computer Science
Depositing User:	Unnamed user with email support@stmlibrarypress.com
Date Deposited:	15 Jun 2023 07:00
Last Modified:	24 Jun 2024 04:27
URI:	http://journal.scienceopenlibraries.com/id/eprint/1544

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