Validation of the BEAMS3D neutral beam deposition model on Wendelstein 7-X

Samuel A Lazerson; Oliver P Ford; Carolin Nuehrenberg; Simppa Johannes Äkäslompolo; Peter Zsolt Poloskei; Mike Machielsen; Paul McNeely; Lilla Vano; Norbert Rust; Sergey A Bozhenkov; Tristan Neelis; Jonathan P Graves; David Pfefferlé; Annabelle Spanier; Dirk Hartmann; Nikolai B Marushchenko; Yuriy Turkin; Matthias Hirsch; Neha Chaudhary; Udo Höfel; Torsten Stange; Gavin McCabe Weir; Novimir Antoniuk Pablant; Andreas Langenberg; Peter Traverso; Pranay Valson; Jens P Knauer; Kai Jakob Brunner; Ekkehard Pasch; Marc N A Beurskens; Hannes Damm; Golo Fuchert; Philipp Nelde; Evan R Scott; Uwe Hergenhahn; Andrea Pavone; Kian Rahbarnia; Tamara Andreeva; Jonathan Schilling; Christian Brandt; Ulrich Neuner; H Thomsen; Marcin Jakubowski; Adnan Ali; Yu Gao; Holger Niemann; Aleix Puig Sitjes; Ralf Koenig; Robert C Wolf

doi:10.1088/1741-4326/ab8e61

Validation of the BEAMS3D neutral beam deposition model on Wendelstein 7-X

Samuel A Lazerson, Oliver P Ford, Carolin Nuehrenberg, Simppa Johannes Äkäslompolo, Peter Zsolt Poloskei, Mike Machielsen, Paul McNeely, Lilla Vano, Norbert Rust, Sergey A Bozhenkov, Tristan Neelis, Jonathan P Graves, David Pfefferlé, Annabelle Spanier, Dirk Hartmann, Nikolai B Marushchenko, Yuriy Turkin, Matthias Hirsch, Neha Chaudhary, Udo HöfelTorsten Stange, Gavin McCabe Weir, Novimir Antoniuk Pablant, Andreas Langenberg, Peter Traverso, Pranay Valson, Jens P Knauer, Kai Jakob Brunner, Ekkehard Pasch, Marc N A Beurskens, Hannes Damm, Golo Fuchert, Philipp Nelde, Evan R Scott, Uwe Hergenhahn, Andrea Pavone, Kian Rahbarnia, Tamara Andreeva, Jonathan Schilling, Christian Brandt, Ulrich Neuner, H Thomsen, Marcin Jakubowski, Adnan Ali, Yu Gao, Holger Niemann, Aleix Puig Sitjes, Ralf Koenig, Robert C Wolf

Mathematics and Statistics

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Abstract

The neutral beam deposition model in the BEAMS3D code is validated against neutral beam attenuation data from Wendelstein 7-X (W7-X). A set of experimental discharges where the neutral beam injection system of W7-X was utilized were reconstructed. These discharges scanned the magnetic configurations and plasma densities of W7-X. The equilibrium reconstructions were performed using STELLOPT which calculates three-dimensional self-consistent ideal magnetohydrodynamic equilibria and kinetic profiles. These reconstructions leveraged new capabilities to incorporate electron cyclotron emission and X-ray imaging diagnostics in the STELLOPT code. The reconstructed equilibria and profiles served as inputs for BEAMS3D calculations of neutral beam deposition in W7-X. It is found that if reconstructed kinetic profiles are utilized, good agreement between measured and simulated beam attenuation is found. As deposition models provide initial conditions for fast-ion slowing down calculations, this work provides a first step towards validating our ability to predict fast ion confinement in stellarators.

Original language	English
Article number	076020
Journal	Nuclear Fusion
Volume	60
Issue number	7
DOIs	https://doi.org/10.1088/1741-4326/ab8e61
Publication status	Published - Jul 2020

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10.1088/1741-4326/ab8e61

Lazerson, et al., 2020 Validation of the BEAMS3D neutral beamAccepted author manuscript, 4.67 MBLicence: CC BY-NC-ND

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Lazerson, S. A., Ford, O. P., Nuehrenberg, C., Äkäslompolo, S. J., Poloskei, P. Z., Machielsen, M., McNeely, P., Vano, L., Rust, N., Bozhenkov, S. A., Neelis, T., Graves, J. P., Pfefferlé, D., Spanier, A., Hartmann, D., Marushchenko, N. B., Turkin, Y., Hirsch, M., Chaudhary, N., ... Wolf, R. C. (2020). Validation of the BEAMS3D neutral beam deposition model on Wendelstein 7-X. Nuclear Fusion, 60(7), [076020]. https://doi.org/10.1088/1741-4326/ab8e61

@article{5852a515c7dc4ab1a5bd09fbf6efca08,

title = "Validation of the BEAMS3D neutral beam deposition model on Wendelstein 7-X",

abstract = "The neutral beam deposition model in the BEAMS3D code is validated against neutral beam attenuation data from Wendelstein 7-X (W7-X). A set of experimental discharges where the neutral beam injection system of W7-X was utilized were reconstructed. These discharges scanned the magnetic configurations and plasma densities of W7-X. The equilibrium reconstructions were performed using STELLOPT which calculates three-dimensional self-consistent ideal magnetohydrodynamic equilibria and kinetic profiles. These reconstructions leveraged new capabilities to incorporate electron cyclotron emission and X-ray imaging diagnostics in the STELLOPT code. The reconstructed equilibria and profiles served as inputs for BEAMS3D calculations of neutral beam deposition in W7-X. It is found that if reconstructed kinetic profiles are utilized, good agreement between measured and simulated beam attenuation is found. As deposition models provide initial conditions for fast-ion slowing down calculations, this work provides a first step towards validating our ability to predict fast ion confinement in stellarators.",

author = "Lazerson, {Samuel A} and Ford, {Oliver P} and Carolin Nuehrenberg and {\"A}k{\"a}slompolo, {Simppa Johannes} and Poloskei, {Peter Zsolt} and Mike Machielsen and Paul McNeely and Lilla Vano and Norbert Rust and Bozhenkov, {Sergey A} and Tristan Neelis and Graves, {Jonathan P} and David Pfefferl{\'e} and Annabelle Spanier and Dirk Hartmann and Marushchenko, {Nikolai B} and Yuriy Turkin and Matthias Hirsch and Neha Chaudhary and Udo H{\"o}fel and Torsten Stange and Weir, {Gavin McCabe} and Pablant, {Novimir Antoniuk} and Andreas Langenberg and Peter Traverso and Pranay Valson and Knauer, {Jens P} and Brunner, {Kai Jakob} and Ekkehard Pasch and Beurskens, {Marc N A} and Hannes Damm and Golo Fuchert and Philipp Nelde and Scott, {Evan R} and Uwe Hergenhahn and Andrea Pavone and Kian Rahbarnia and Tamara Andreeva and Jonathan Schilling and Christian Brandt and Ulrich Neuner and H Thomsen and Marcin Jakubowski and Adnan Ali and Yu Gao and Holger Niemann and {Puig Sitjes}, Aleix and Ralf Koenig and Wolf, {Robert C}",

year = "2020",

month = jul,

doi = "10.1088/1741-4326/ab8e61",

language = "English",

volume = "60",

journal = "Nuclear Fusion",

issn = "0029-5515",

publisher = "IOP Publishing",

number = "7",

}

Lazerson, SA, Ford, OP, Nuehrenberg, C, Äkäslompolo, SJ, Poloskei, PZ, Machielsen, M, McNeely, P, Vano, L, Rust, N, Bozhenkov, SA, Neelis, T, Graves, JP, Pfefferlé, D, Spanier, A, Hartmann, D, Marushchenko, NB, Turkin, Y, Hirsch, M, Chaudhary, N, Höfel, U, Stange, T, Weir, GM, Pablant, NA, Langenberg, A, Traverso, P, Valson, P, Knauer, JP, Brunner, KJ, Pasch, E, Beurskens, MNA, Damm, H, Fuchert, G, Nelde, P, Scott, ER, Hergenhahn, U, Pavone, A, Rahbarnia, K, Andreeva, T, Schilling, J, Brandt, C, Neuner, U, Thomsen, H, Jakubowski, M, Ali, A, Gao, Y, Niemann, H, Puig Sitjes, A, Koenig, R & Wolf, RC 2020, 'Validation of the BEAMS3D neutral beam deposition model on Wendelstein 7-X', Nuclear Fusion, vol. 60, no. 7, 076020. https://doi.org/10.1088/1741-4326/ab8e61

TY - JOUR

T1 - Validation of the BEAMS3D neutral beam deposition model on Wendelstein 7-X

AU - Lazerson, Samuel A

AU - Ford, Oliver P

AU - Nuehrenberg, Carolin

AU - Äkäslompolo, Simppa Johannes

AU - Poloskei, Peter Zsolt

AU - Machielsen, Mike

AU - McNeely, Paul

AU - Vano, Lilla

AU - Rust, Norbert

AU - Bozhenkov, Sergey A

AU - Neelis, Tristan

AU - Graves, Jonathan P

AU - Pfefferlé, David

AU - Spanier, Annabelle

AU - Hartmann, Dirk

AU - Marushchenko, Nikolai B

AU - Turkin, Yuriy

AU - Hirsch, Matthias

AU - Chaudhary, Neha

AU - Höfel, Udo

AU - Stange, Torsten

AU - Weir, Gavin McCabe

AU - Pablant, Novimir Antoniuk

AU - Langenberg, Andreas

AU - Traverso, Peter

AU - Valson, Pranay

AU - Knauer, Jens P

AU - Brunner, Kai Jakob

AU - Pasch, Ekkehard

AU - Beurskens, Marc N A

AU - Damm, Hannes

AU - Fuchert, Golo

AU - Nelde, Philipp

AU - Scott, Evan R

AU - Hergenhahn, Uwe

AU - Pavone, Andrea

AU - Rahbarnia, Kian

AU - Andreeva, Tamara

AU - Schilling, Jonathan

AU - Brandt, Christian

AU - Neuner, Ulrich

AU - Thomsen, H

AU - Jakubowski, Marcin

AU - Ali, Adnan

AU - Gao, Yu

AU - Niemann, Holger

AU - Puig Sitjes, Aleix

AU - Koenig, Ralf

AU - Wolf, Robert C

PY - 2020/7

Y1 - 2020/7

N2 - The neutral beam deposition model in the BEAMS3D code is validated against neutral beam attenuation data from Wendelstein 7-X (W7-X). A set of experimental discharges where the neutral beam injection system of W7-X was utilized were reconstructed. These discharges scanned the magnetic configurations and plasma densities of W7-X. The equilibrium reconstructions were performed using STELLOPT which calculates three-dimensional self-consistent ideal magnetohydrodynamic equilibria and kinetic profiles. These reconstructions leveraged new capabilities to incorporate electron cyclotron emission and X-ray imaging diagnostics in the STELLOPT code. The reconstructed equilibria and profiles served as inputs for BEAMS3D calculations of neutral beam deposition in W7-X. It is found that if reconstructed kinetic profiles are utilized, good agreement between measured and simulated beam attenuation is found. As deposition models provide initial conditions for fast-ion slowing down calculations, this work provides a first step towards validating our ability to predict fast ion confinement in stellarators.

AB - The neutral beam deposition model in the BEAMS3D code is validated against neutral beam attenuation data from Wendelstein 7-X (W7-X). A set of experimental discharges where the neutral beam injection system of W7-X was utilized were reconstructed. These discharges scanned the magnetic configurations and plasma densities of W7-X. The equilibrium reconstructions were performed using STELLOPT which calculates three-dimensional self-consistent ideal magnetohydrodynamic equilibria and kinetic profiles. These reconstructions leveraged new capabilities to incorporate electron cyclotron emission and X-ray imaging diagnostics in the STELLOPT code. The reconstructed equilibria and profiles served as inputs for BEAMS3D calculations of neutral beam deposition in W7-X. It is found that if reconstructed kinetic profiles are utilized, good agreement between measured and simulated beam attenuation is found. As deposition models provide initial conditions for fast-ion slowing down calculations, this work provides a first step towards validating our ability to predict fast ion confinement in stellarators.

UR - http://www.scopus.com/inward/record.url?scp=85087109519&partnerID=8YFLogxK

U2 - 10.1088/1741-4326/ab8e61

DO - 10.1088/1741-4326/ab8e61

M3 - Article

SN - 0029-5515

VL - 60

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 7

M1 - 076020

ER -

Validation of the BEAMS3D neutral beam deposition model on Wendelstein 7-X

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