TY - JOUR
T1 - Conceptual Design of a Scintillator-Based Fast-Ion Loss Detector for the Wendelstein 7-X Stellarator
AU - Jansen Van Vuuren, A.
AU - Lazerson, S. A.
AU - Leviness, A.
AU - Garcia-Munoz, M.
AU - Gates, D.
AU - Galdon-Quiroga, J.
AU - Hidalgo-Salaverri, J.
AU - Rueda-Rueda, J.
AU - Garcia-Dominguez, J.
AU - Ayllon-Guerola, J.
N1 - Publisher Copyright:
© 1973-2012 IEEE.
PY - 2022/11/1
Y1 - 2022/11/1
N2 - 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.
AB - 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.
KW - Fast ions
KW - fast-ion loss detector (FILD)
KW - magnetic confinement fusion
KW - Wendelstein 7-X
UR - https://www.scopus.com/pages/publications/85134243538
UR - https://www.scopus.com/inward/citedby.url?scp=85134243538&partnerID=8YFLogxK
U2 - 10.1109/TPS.2022.3183890
DO - 10.1109/TPS.2022.3183890
M3 - Article
AN - SCOPUS:85134243538
SN - 0093-3813
VL - 50
SP - 4114
EP - 4119
JO - IEEE Transactions on Plasma Science
JF - IEEE Transactions on Plasma Science
IS - 11
ER -