Artículo
First measurements of a magnetically driven fast-ion loss detector on ASDEX Upgrade
Autor/es | González Martín, Javier
García Muñoz, Manuel Herrmann, A. Ayllón Guerola, Juan Manuel Galdón Quiroga, Joaquín Kovacsik, A. Leitenstern, P. Lunt, T. Rivero Rodríguez, Juan Francisco Sieglin, B. Zoletnik, S. Domínguez Abascal, Jaime |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear Universidad de Sevilla. Departamento de Ingeniería Mecánica y de Fabricación |
Fecha de publicación | 2019 |
Fecha de depósito | 2023-02-16 |
Publicado en |
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Resumen | A new scintillator-based fast-ion loss detector (FILD) has been deployed ∼45ˆ below the midplane of the ASDEX Upgrade tokamak. Port unavailability at this remote location requires an in-situ magnetically driven manipulator ... A new scintillator-based fast-ion loss detector (FILD) has been deployed ∼45ˆ below the midplane of the ASDEX Upgrade tokamak. Port unavailability at this remote location requires an in-situ magnetically driven manipulator to move the diagnostic head horizontally through the scrape-off layer (SOL). The linear displacement is produced by an externally energized coil, whose magnetic dipole tries to align with the toroidal component of the tokamak magnetic field. The insertion is given by force balance between a retaining spring and the energized solenoid, whose current is regulated in real-time, opening the possibility of self-adaptive real-time control of the probe head location based on its temperature. The diagnostic head contains a scintillator screen, Faraday cup, thermocouple and collimator systems. The scintillator image is transferred to a vacuum window using a 3.5 meters quartz image guide. The light acquisition system is composed by a charge coupled device (CCD) camera, for high velocity-space resolution, and by an 8×4 channels avalanche photo diode (APD) camera, for high temporal resolution (up to 2 MHz). First measurements of magnetohydrodynamic (MHD) induced fast-ion losses and radially resolved fast-ion losses are presented. |
Agencias financiadoras | Comunidad Europea de Energía Atómica (EURATOM) Ministerio de Ciencia e Innovación (MICIN). España |
Identificador del proyecto | 633053
FPU15/06074 |
Cita | González Martín, J., García Muñoz, M., Herrmann, A., Ayllón Guerola, J.M., Galdón Quiroga, J., Kovacsik, A.,...,Domínguez Abascal, J. (2019). First measurements of a magnetically driven fast-ion loss detector on ASDEX Upgrade. Journal of Instrumentation, 14 (11), C11005. https://doi.org/10.1088/1748-0221/14/11/C11005. |
Ficheros | Tamaño | Formato | Ver | Descripción |
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First measurements.pdf | 789.6Kb | [PDF] | Ver/ | |