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

van Vuuren, A. Jansen; Lazerson, S. A.; Leviness, A.; Garcia-Munoz, M.; Gates, D.; Galdon-Quiroga, J.; Hidalgo-Salaverri, J.; Rueda-Rueda, J.; Garcia-Dominguez, J.; Ayllon-Guerola, J.

doi:10.1109/tps.2022.3183890

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

Journal Article · Mon Jul 04 00:00:00 EDT 2022 · IEEE Transactions on Plasma Science

DOI:https://doi.org/10.1109/tps.2022.3183890· OSTI ID:1888525

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University of Seville (Spain)
Max Planck Institute for Plasma Physics, Greifswald (Germany)
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

Here, 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.

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Research Organization:: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: USDOE; European Union (EU); Spanish Ministry of Science and Innovation

Contributing Organization:: Wendelstein 7-X Team

Grant/Contract Number:: AC02-09CH11466

OSTI ID:: 1888525

Journal Information:: IEEE Transactions on Plasma Science, Vol. 50, Issue 11; ISSN 0093-3813

Publisher:: IEEECopyright Statement

Country of Publication:: United States

Language:: English

References (20)

Development of a Faraday cup fast ion loss detector for keV beam ions Lazerson, Samuel A.; Ellis, Robert; Freeman, Chris Review of Scientific Instruments, Vol. 90, Issue 9 https://doi.org/10.1063/1.5111714	journal	September 2019
First neutral beam experiments on Wendelstein 7-X Lazerson, Samuel A.; Ford, Oliver; Äkaslompolö, Simppa Nuclear Fusion, Vol. 61, Issue 9 https://doi.org/10.1088/1741-4326/ac121c	journal	July 2021
Steepest-descent moment method for three-dimensional magnetohydrodynamic equilibria Hirshman, S. P. Physics of Fluids, Vol. 26, Issue 12 https://doi.org/10.1063/1.864116	journal	January 1983
W7-X neutral-beam-injection: Selection of the NBI source positions for experiment start-up Rust, Norbert; Heinemann, Bernd; Mendelevitch, Boris Fusion Engineering and Design, Vol. 86, Issue 6-8 https://doi.org/10.1016/j.fusengdes.2011.03.054	journal	October 2011
ASCOT: Solving the kinetic equation of minority particle species in tokamak plasmas Hirvijoki, E.; Asunta, O.; Koskela, T. Computer Physics Communications, Vol. 185, Issue 4 https://doi.org/10.1016/j.cpc.2014.01.014	journal	April 2014
Collisionless alpha -particle confinement in stellarators Lotz, W.; Merkel, P.; Nuhrenberg, J. Plasma Physics and Controlled Fusion, Vol. 34, Issue 6 https://doi.org/10.1088/0741-3335/34/6/010	journal	June 1992
The virtual-casing principle for 3D toroidal systems Lazerson, S. A. Plasma Physics and Controlled Fusion, Vol. 54, Issue 12 https://doi.org/10.1088/0741-3335/54/12/122002	journal	November 2012
Deposition patterns of fast ions on plasma facing components in W7-X Strumberger, E. Nuclear Fusion, Vol. 40, Issue 10 https://doi.org/10.1088/0029-5515/40/10/302	journal	October 2000
BEAMS3D Neutral Beam Injection Model McMillan, Matthew; Lazerson, Samuel A. Plasma Physics and Controlled Fusion, Vol. 56, Issue 9 https://doi.org/10.1088/0741-3335/56/9/095019	journal	July 2014
Energy-and-pitch-angle-resolved escaping beam ion measurements by Faraday-cup-based fast-ion loss detector in Wendelstein 7-X Ogawa, K.; Bozhenkov, S. A.; Äkäslompolo, S. Journal of Instrumentation, Vol. 14, Issue 09 https://doi.org/10.1088/1748-0221/14/09/C09021	journal	September 2019
The ICRH system for the stellarator Wendelstein 7-X Ongena, J.; Messiaen, A.; Kazakov, Ye. O. THE 6TH INTERNATIONAL CONFERENCE ON BIOLOGICAL SCIENCE ICBS 2019: “Biodiversity as a Cornerstone for Embracing Future Humanity” https://doi.org/10.1063/5.0014264	conference	January 2020
Characterization of scintillator materials for fast-ion loss detectors in nuclear fusion reactors Jiménez-Ramos, M. C.; García López, J.; García-Muñoz, M. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 332 https://doi.org/10.1016/j.nimb.2014.02.064	journal	August 2014
Improvements to the Faraday cup fast ion loss detector and magnetohydrodynamic induced fast ion loss measurements in Joint European Torus plasmas Bonofiglo, P. J.; Kiptily, V.; Horton, A. Review of Scientific Instruments, Vol. 91, Issue 9 https://doi.org/10.1063/5.0014278	journal	September 2020
Modeling and measurement of energetic particle slowing down in Wendelstein 7-X Lazerson, Samuel A.; Pfefferlé, David; Drevlak, Michael Nuclear Fusion, Vol. 61, Issue 9 https://doi.org/10.1088/1741-4326/ac0771	journal	July 2021
Placement of a fast ion loss detector array for neutral beam injected particles in Wendelstein 7-X Kulla, D.; Lazerson, S.; Günter, S. Plasma Physics and Controlled Fusion, Vol. 64, Issue 3 https://doi.org/10.1088/1361-6587/ac43f1	journal	February 2022
Pitch angle resolved measurements of escaping charged fusion products in TFTR Zweben, S. J. Nuclear Fusion, Vol. 29, Issue 5 https://doi.org/10.1088/0029-5515/29/5/012	journal	May 1989
Velocity-space sensitivity and tomography of scintillator-based fast-ion loss detectors Galdon-Quiroga, J.; Garcia-Munoz, M.; Salewski, M. Plasma Physics and Controlled Fusion, Vol. 60, Issue 10 https://doi.org/10.1088/1361-6587/aad76e	journal	August 2018
Scintillator based detector for fast-ion losses induced by magnetohydrodynamic instabilities in the ASDEX upgrade tokamak García-Muñoz, M.; Fahrbach, H. -U.; Zohm, H. Review of Scientific Instruments, Vol. 80, Issue 5 https://doi.org/10.1063/1.3121543	journal	May 2009
Validation of the BEAMS3D neutral beam deposition model on Wendelstein 7-X Lazerson, Samuel A.; Ford, Oliver P.; Nuehrenberg, Carolin Nuclear Fusion, Vol. 60, Issue 7 https://doi.org/10.1088/1741-4326/ab8e61	journal	June 2020
Fast particle confinement with optimized coil currents in the W7-X stellarator Drevlak, M.; Geiger, J.; Helander, P. Nuclear Fusion, Vol. 54, Issue 7 https://doi.org/10.1088/0029-5515/54/7/073002	journal	April 2014

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