Simulating energetic particle losses in JET plasmas with a reverse integration biasing scheme

Bonofiglo, P. J.; Podestà, M.; White, R. B.; Kiptily, V.; Goloborodko, V.; Gorelenkov, N. N.; Vallar, M.; Cecil, F. E.; Giroud, C.; Brezinsek, S.

doi:10.1088/1741-4326/ac3f4a

Simulating energetic particle losses in JET plasmas with a reverse integration biasing scheme

Journal Article · Tue Jan 04 00:00:00 EST 2022 · Nuclear Fusion

DOI:https://doi.org/10.1088/1741-4326/ac3f4a· OSTI ID:1856190

^[1]; ^[1]; ^[1]; ^[2]; Goloborodko, V. ^[3]; ^[1]; ^[4]; Cecil, F. E. ^[5]; Giroud, C. ^[2]; ^[6]

Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Culham Science Centre, Abingdon (United Kingdom)
Kyiv Inst. for Nuclear Research (Ukraine)
Ecole Polytechnique Federale Lausanne (Switzerland)
Colorado School of Mines, Golden, CO (United States)
Institute of Energy and Climate Research, Julich (Germany)

We report that an integrated energetic particle transport model has been constructed in JET plasmas constrained by experimental fast ion loss measurements. The model incorporates a synthetic fast ion loss detector identical to JET’s thin-foil Faraday cup fast ion loss detector array. The loss model combines analyses from the TRANSP and ORBIT-kick codes with enhanced features for producing the synthetic diagnostic. Extensions to the ORBIT code framework allow a full-orbit representation within the vacuum region that can map particles directly to an installed detector geometry. Since synthetic fast ion loss detectors are plagued by weak loss statistics, a novel reverse integration biasing scheme has been implemented to boost computational efficiency. The model is validated against experimental loss measurements induced by long-lived kink modes and is found to be in good agreement. This confirms the development of a fully integrated transport/loss model which can be quantitatively verified against experiment allowing for future validation and predictive studies. The model is particularly useful for more complicated plasma scenarios that involve multiple fast ion species such as JET’s 2021 DT-campaign.

View Accepted Manuscript (DOE)

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

Sponsoring Organization:: Euratom research and training programme; USDOE Office of Science (SC), Fusion Energy Sciences (FES)

Contributing Organization:: JET Contributors

Grant/Contract Number:: AC02-09CH11466

OSTI ID:: 1856190

Journal Information:: Nuclear Fusion, Journal Name: Nuclear Fusion Journal Issue: 2 Vol. 62; ISSN 0029-5515

Publisher:: IOP ScienceCopyright Statement

Country of Publication:: United States

Language:: English

References (48)

Predictive Fokker–Planck Modelling of Confined and Lost Fusion Alpha Particles in ITER Yavorskij, Victor; Goloborod’ko, Victor; Eriksson, Lars-Goran Journal of Fusion Energy, Vol. 34, Issue 4 https://doi.org/10.1007/s10894-015-9862-2	journal	February 2015
The KINX ideal MHD stability code for axisymmetric plasmas with separatrix Degtyarev, L.; Martynov, A.; Medvedev, S. Computer Physics Communications, Vol. 103, Issue 1 https://doi.org/10.1016/S0010-4655(97)00037-4	journal	June 1997
The tokamak Monte Carlo fast ion module NUBEAM in the National Transport Code Collaboration library Pankin, Alexei; McCune, Douglas; Andre, Robert Computer Physics Communications, Vol. 159, Issue 3 https://doi.org/10.1016/j.cpc.2003.11.002	journal	June 2004
Overview of the SPARC tokamak Creely, A. J.; Greenwald, M. J.; Ballinger, S. B. Journal of Plasma Physics, Vol. 86, Issue 5 https://doi.org/10.1017/S0022377820001257	journal	September 2020
Scintillator probe for lost alpha measurements in JET Baeumel, S.; Werner, A.; Semler, R. Review of Scientific Instruments, Vol. 75, Issue 10 https://doi.org/10.1063/1.1787916	journal	October 2004
Design and construction of a fast ion loss Faraday cup array diagnostic for Joint European Torus Darrow, D. S.; Bäumel, S.; Cecil, F. E. Review of Scientific Instruments, Vol. 75, Issue 10 https://doi.org/10.1063/1.1788876	journal	October 2004
Basic physics of Alfvén instabilities driven by energetic particles in toroidally confined plasmas Heidbrink, W. W. Physics of Plasmas, Vol. 15, Issue 5 https://doi.org/10.1063/1.2838239	journal	May 2008
Modeling fast-ion transport during toroidal Alfvén eigenmode avalanches in National Spherical Torus Experiment Fredrickson, E. D.; Crocker, N. A.; Bell, R. E. Physics of Plasmas, Vol. 16, Issue 12 https://doi.org/10.1063/1.3265965	journal	December 2009
Scintillator-based diagnostic for fast ion loss measurements on DIII-D Fisher, R. K.; Pace, D. C.; García-Muñoz, M. Review of Scientific Instruments, Vol. 81, Issue 10 https://doi.org/10.1063/1.3490020	journal	October 2010
The anomalous currents in the front foils of the JET lost alpha diagnostic KA-2 Cecil, F. E.; Kiptily, V.; Salmi, A. Review of Scientific Instruments, Vol. 81, Issue 10 https://doi.org/10.1063/1.3502040	journal	October 2010
Observation of alpha particle loss from JET plasmas during ion cyclotron resonance frequency heating using a thin foil Faraday cup detector array Darrow, D. S.; Cecil, F. E.; Kiptily, V. Review of Scientific Instruments, Vol. 81, Issue 10 https://doi.org/10.1063/1.3502325	journal	October 2010
Near midplane scintillator-based fast ion loss detector on DIII-D Chen, X.; Fisher, R. K.; Pace, D. C. Review of Scientific Instruments, Vol. 83, Issue 10 https://doi.org/10.1063/1.4732063	journal	October 2012
Initial measurements of fast ion loss in KSTAR Kim, Junghee; Kim, Jun Young; Yoon, S. W. Review of Scientific Instruments, Vol. 83, Issue 10 https://doi.org/10.1063/1.4733550	journal	October 2012
Monte Carlo implementation of a guiding-center Fokker-Planck kinetic equation Hirvijoki, E.; Brizard, A.; Snicker, A. Physics of Plasmas, Vol. 20, Issue 9 https://doi.org/10.1063/1.4820951	journal	September 2013
Mapping and uncertainty analysis of energy and pitch angle phase space in the DIII-D fast ion loss detector Pipes, R.; Fisher, R. K.; Van Zeeland, M. A. Review of Scientific Instruments, Vol. 85, Issue 11 https://doi.org/10.1063/1.4891596	journal	November 2014
Conceptual design of the ITER fast-ion loss detector Garcia-Munoz, M.; Kocan, M.; Ayllon-Guerola, J. Review of Scientific Instruments, Vol. 87, Issue 11 https://doi.org/10.1063/1.4961295	journal	August 2016
A backward Monte-Carlo method for time-dependent runaway electron simulations Zhang, Guannan; del-Castillo-Negrete, Diego Physics of Plasmas, Vol. 24, Issue 9 https://doi.org/10.1063/1.4986019	journal	September 2017
Mechanisms of energetic-particle transport in magnetically confined plasmas Heidbrink, W. W.; White, R. B. Physics of Plasmas, Vol. 27, Issue 3 https://doi.org/10.1063/1.5136237	journal	March 2020
Hamiltonian guiding center drift orbit calculation for plasmas of arbitrary cross section White, R. B.; Chance, M. S. Physics of Fluids, Vol. 27, Issue 10 https://doi.org/10.1063/1.864527	journal	January 1984
Low-n shear Alfvén spectra in axisymmetric toroidal plasmas Cheng, C. Z.; Chance, M. S. Physics of Fluids, Vol. 29, Issue 11 https://doi.org/10.1063/1.865801	journal	January 1986
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
Self-adaptive diagnostic of radial fast-ion loss measurements on the ASDEX Upgrade tokamak (invited) Gonzalez-Martin, J.; Garcia-Munoz, M.; Sieglin, B. Review of Scientific Instruments, Vol. 92, Issue 5 https://doi.org/10.1063/5.0043756	journal	May 2021
Implementation of synthetic fast-ion loss detector and imaging heavy ion beam probe diagnostics in the 3D hybrid kinetic-MHD code MEGA Oyola, P.; Gonzalez-Martin, J.; Garcia-Munoz, M. Review of Scientific Instruments, Vol. 92, Issue 4 https://doi.org/10.1063/5.0043757	journal	April 2021
Upgrade and absolute calibration of the JET scintillator-based fast-ion loss detector Rivero-Rodriguez, J. F.; Perez Von Thun, C.; Garcia-Muñoz, M. Review of Scientific Instruments, Vol. 92, Issue 4 https://doi.org/10.1063/5.0043760	journal	April 2021
The behaviour of fast ions in tokamak experiments Heidbrink, W. W.; Sadler, G. J. Nuclear Fusion, Vol. 34, Issue 4 https://doi.org/10.1088/0029-5515/34/4/i07	journal	April 1994
Measurements of DT alpha particle loss near the outer midplane of TFTR Zweben, S. J.; Darrow, D. S.; Herrmann, H. W. Nuclear Fusion, Vol. 35, Issue 12 https://doi.org/10.1088/0029-5515/35/12/i04	journal	December 1995
Alpha particle loss in the TFTR DT experiments Zweben, S. J.; Darrow, D. S.; Herrmann, H. W. Nuclear Fusion, Vol. 35, Issue 8 https://doi.org/10.1088/0029-5515/35/8/i01	journal	August 1995
Observation and modelling of fast ion loss in JET and ASDEX Upgrade Pinches, S. D.; Kiptily, V. G.; Sharapov, S. E. Nuclear Fusion, Vol. 46, Issue 10 https://doi.org/10.1088/0029-5515/46/10/s06	journal	September 2006
Numerical simulation of fast ion loss detector measurements for fishbones on JET von Thun, C. Perez; Perona, A.; Johnson, T. Nuclear Fusion, Vol. 51, Issue 5 https://doi.org/10.1088/0029-5515/51/5/053003	journal	April 2011
Kink instabilities in high-beta JET advanced scenarios Buratti, P.; Baruzzo, M.; Buttery, R. J. Nuclear Fusion, Vol. 52, Issue 2 https://doi.org/10.1088/0029-5515/52/2/023006	journal	January 2012
Stochastic orbit loss of neutral beam ions from NSTX due to toroidal Alfvén eigenmode avalanches Darrow, D. S.; Crocker, N.; Fredrickson, E. D. Nuclear Fusion, Vol. 53, Issue 1 https://doi.org/10.1088/0029-5515/53/1/013009	journal	December 2012
Redistribution of high energy alpha particles due to sawteeth with partial reconnection Farengo, R.; Ferrari, H. E.; García-Martínez, P. L. Nuclear Fusion, Vol. 53, Issue 4 https://doi.org/10.1088/0029-5515/53/4/043012	journal	March 2013
Numerical simulation of ion cyclotron waves in tokamak plasmas Brambilla, M. Plasma Physics and Controlled Fusion, Vol. 41, Issue 1 https://doi.org/10.1088/0741-3335/41/1/002	journal	January 1999
The ITER design Aymar, R.; Barabaschi, P.; Shimomura, Y. Plasma Physics and Controlled Fusion, Vol. 44, Issue 5 https://doi.org/10.1088/0741-3335/44/5/304	journal	April 2002
Study of slow n = 1, m = 1 reconnection in JET discharges with low central magnetic shear Buratti, P.; Alper, B.; Annibaldi, S. V. Plasma Physics and Controlled Fusion, Vol. 48, Issue 7 https://doi.org/10.1088/0741-3335/48/7/009	journal	June 2006
Low frequency sawtooth precursor activity in ASDEX Upgrade Papp, G.; Pokol, G. I.; Por, G. Plasma Physics and Controlled Fusion, Vol. 53, Issue 6 https://doi.org/10.1088/0741-3335/53/6/065007	journal	April 2011
A reduced fast ion transport model for the tokamak transport code TRANSP Podestà, M.; Gorelenkova, M.; White, R. B. Plasma Physics and Controlled Fusion, Vol. 56, Issue 5 https://doi.org/10.1088/0741-3335/56/5/055003	journal	April 2014
Computation of Alfvèn eigenmode stability and saturation through a reduced fast ion transport model in the TRANSP tokamak transport code Podestà, M.; Gorelenkova, M.; Gorelenkov, N. N. Plasma Physics and Controlled Fusion, Vol. 59, Issue 9 https://doi.org/10.1088/1361-6587/aa7977	journal	July 2017
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
Phase-space dependent critical gradient behavior of fast-ion transport due to Alfvén eigenmodes Collins, C. S.; Heidbrink, W. W.; Podestà, M. Nuclear Fusion, Vol. 57, Issue 8 https://doi.org/10.1088/1741-4326/aa720c	journal	June 2017
Fusion product losses due to fishbone instabilities in deuterium JET plasmas Kiptily, V. G.; Fitzgerald, M.; Goloborodko, V. Nuclear Fusion, Vol. 58, Issue 1 https://doi.org/10.1088/1741-4326/aa9340	journal	November 2017
Orbit modeling of fast particle redistribution induced by sawtooth instability Kim, D.; Podestà, M.; Liu, D. Nuclear Fusion, Vol. 58, Issue 8 https://doi.org/10.1088/1741-4326/aac10f	journal	July 2018
Full-orbit and drift calculations of fusion product losses due to explosive fishbones on JET Fitzgerald, M.; Buchanan, J.; Sharapov, S. E. Nuclear Fusion, Vol. 59, Issue 1 https://doi.org/10.1088/1741-4326/aaea1e	journal	November 2018
Overview of the JET preparation for deuterium–tritium operation with the ITER like-wall Joffrin, E.; Abduallev, S.; Abhangi, M. Nuclear Fusion, Vol. 59, Issue 11 https://doi.org/10.1088/1741-4326/ab2276	journal	August 2019
ASCOT orbit-following simulations of ion cyclotron heating with synthetic fast ion loss diagnostic: a first application to ASDEX Upgrade Sipilä, Seppo; Varje, Jari; Johnson, Thomas Nuclear Fusion, Vol. 61, Issue 8 https://doi.org/10.1088/1741-4326/ac0e71	journal	July 2021
Fast ion transport by sawtooth instability in the presence of ICRF–NBI synergy in JET plasmas Teplukhina, A. A.; Podestà, M.; Poli, F. M. Nuclear Fusion, Vol. 61, Issue 11 https://doi.org/10.1088/1741-4326/ac2524	journal	October 2021
Studies of Internal Disruptions and m = 1 Oscillations in Tokamak Discharges with Soft—X-Ray Tecniques von Goeler, S.; Stodiek, W.; Sauthoff, N. Physical Review Letters, Vol. 33, Issue 20 https://doi.org/10.1103/physrevlett.33.1201	journal	November 1974
Synthetic Fast Ion Diagnostics in Tokamaks: Comparing the Monte Carlo Test Particle Code ASCOT against Experiments Äkäslompolo, Simpp; Kurki-Suonio, Tain; Sipilä, Sepp Fusion Science and Technology, Vol. 69, Issue 3 https://doi.org/10.13182/fst15-184	journal	May 2016

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70 PLASMA PHYSICS AND FUSION TECHNOLOGY
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Simulating energetic particle losses in JET plasmas with a reverse integration biasing scheme

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