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Conceptual Design of a Scintillator-Based Fast-Ion Loss Detector for the Wendelstein 7-X Stellarator

Authors :
Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Universidad de Sevilla. Departamento de Ingeniería Mecánica y de Fabricación
European Union (UE)
Ministerio de Ciencia e Innovación (MICIN). España
Van Vuuren, Anton Jansen
Lazerson, S. A.
Leviness, A.
García Muñoz, Manuel
Gates, D.
Galdón Quiroga, Joaquín
Hidalgo Salaverri, J.
Rueda Rueda, J.
García Domínguez, Javier
Ayllón Guerola, Juan Manuel
Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Universidad de Sevilla. Departamento de Ingeniería Mecánica y de Fabricación
European Union (UE)
Ministerio de Ciencia e Innovación (MICIN). España
Van Vuuren, Anton Jansen
Lazerson, S. A.
Leviness, A.
García Muñoz, Manuel
Gates, D.
Galdón Quiroga, Joaquín
Hidalgo Salaverri, J.
Rueda Rueda, J.
García Domínguez, Javier
Ayllón Guerola, Juan Manuel
Publication Year :
2022

Abstract

A conceptual design of a scintillator-based fast-ion loss detector (FILD) has been developed for the Wendelstein 7-X stellarator (W7-X). Simulations using the Monte Carlo codes ASCOT5 and BEAMS3D have been performed to calculate the expected flux of neutral beam injection (NBI)-generated fast hydrogen ions onto the conceptual detector probe head. These fast-ion loss fluxes have been calculated for several magnetic field configurations as well as probe insertion positions. At the maximum insertion position, both co- and counter-going losses with high incident pitch angles are observed; however, at retracted positions, only co-going fast ions reach the probe head. The FILDSIM code has been used to optimize the geometry of the detector entrance and collimating elements to achieve a wide velocity space coverage as well as a high velocity–space resolution. A synthetic FILD signal is calculated for the expected loss distribution via forward modeling using the instrument response function. The synthetic signal is found to largely retain the velocity space features of the loss distribution.

Details

Database :
OAIster
Notes :
English
Publication Type :
Electronic Resource
Accession number :
edsoai.on1457285946
Document Type :
Electronic Resource