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Development of Nuclear Radiation Based Tomography Methods for Runaway Electrons in Fusion Plasmas: First Results and Prospects

Panontin E.; Dal Molin A.; Nocente M.; Tardocchi M.; Causa F.; Eriksson J.; Giacomelli L.; Gorini G.; Rigamonti D.; Salewski M.; ASDEX Upgrade Team

Conference: 46th EPS Conference on Plasma Physics, pp. 1 - 4 , Milano - Italy , 8-12 July 2019 Year: 2019
ISTP Authors:
Giuseppe Gorini
Davide Rigamonti
Federica Causa
Marco Tardocchi

Keywords: , ,
Research Activitie:

The study of Runaway Electron (RE) physics and their response to mitigation strategies is crucial to safeguard ITER structural integrity. During their motion REs collide with background ions before hitting the inner vessel of the machine and thus they emit Bremsstrahlung photons in the gamma range of the spectrum. It is possible to detect such radiation using a LaBr3(Ce) spectrometer with counting rate capability in the MHz range and high energy resolution [1][5]. The measured spectra contain information about the RE energy distribution, which can be reconstructed using specific inversion (or econvolution) algorithms. The deconvolution operation is computationally faster than first principles simulations and its use in RE studies might be many fold: it can be used to improve synthetic diagnostic calculations or as a preliminary method for RE spectra analysis.

ID 405136
PRODUCT TYPE Conference Proceeding
LAST UPDATE 2023-02-07T12:24:05Z
TITLE Implementation of activities described in the Roadmap to Fusion during Horizon 2020 through a Joint programme of the members of the EUROfusion consortium