Energy-angle distribution of the ions in the RF sheath of ICRH antennas

Elias, M.; Curreli, D.; Myra, J. R.

doi:10.1063/5.0045962

Title: Energy-angle distribution of the ions in the RF sheath of ICRH antennas

Journal Article · Thu May 06 00:00:00 EDT 2021 · Physics of Plasmas

DOI:https://doi.org/10.1063/5.0045962· OSTI ID:1852490

^[1];

^[2]

Univ. of Illinois at Urbana-Champaign, IL (United States). Nuclear, Plasma, and Radiological Engineering
Lodestar Research Corporation, Boulder, CO (United States)

Radio-frequency sheaths forming at the surface of ion cyclotron resonance heating (ICRH) actuators in fusion experiments are associated with enhanced impurity sputtering from ICRH plasma-facing components (PFCs). The minimization of impurity fluxes from the ICRH PFC is a vital task for the usage of ICRH systems. Capturing the ion kinetics is important for an accurate description of plasma–material interactions, because the ion dynamics plays a crucial role in RF sheaths. Here, we present a hybrid particle-in-cell (hPIC) model able to capture the kinetic behavior of the ions. We analyze the kinetic ion energy-angle distributions (IEADs) impacting the RF antenna and its dependence on different plasma and RF sheath parameters. In particular, the IEAD dependence on RF frequency and magnetic field alignment is investigated. Using hPIC, we simulated a case emulating the latest experimental campaign from JET. The simulation showed that under specific plasma and RF parameters, the kinetic motion of ions results in a cusp formation in the IEAD.

View Accepted Manuscript (DOE)

View Accepted Manuscript (Publisher)

Cite

Export

Save

Research Organization:: Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Univ. of Illinois at Urbana-Champaign, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)

Grant/Contract Number:: SC0018090; SC0018141; AC05-00OR22725; SC0018090-PO97564; AC05-00OR22725/4000158507

OSTI ID:: 1852490

Alternate ID(s):: OSTI ID: 1781903

Journal Information:: Physics of Plasmas, Vol. 28, Issue 5; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

References (38)

Heat loads on JET plasma facing components from ICRF and LH wave absorption in the SOL Jacquet, P.; Colas, L.; Mayoral, M. -L. Nuclear Fusion, Vol. 51, Issue 10 https://doi.org/10.1088/0029-5515/51/10/103018	journal	August 2011
Impact of ICRF on the scrape-off layer and on plasma wall interactions: From present experiments to fusion reactor Bobkov, V.; Aguiam, D.; Bilato, R. Nuclear Materials and Energy, Vol. 18 https://doi.org/10.1016/j.nme.2018.11.017	journal	January 2019
Self consistent radio-frequency wave propagation and peripheral direct current plasma biasing: Simplified three dimensional non-linear treatment in the “wide sheath” asymptotic regime Colas, L.; Jacquot, J.; Heuraux, S. Physics of Plasmas, Vol. 19, Issue 9 https://doi.org/10.1063/1.4750046	journal	September 2012
Nonlinear plasma sheath potential in the ASDEX Upgrade 3-strap antenna: a parameter scan Tierens, W.; Jacquot, J.; Bobkov, V. Nuclear Fusion, Vol. 57, Issue 11 https://doi.org/10.1088/1741-4326/aa7f9e	journal	August 2017
Physics-based parametrization of the surface impedance for radio frequency sheaths Myra, J. R. Physics of Plasmas, Vol. 24, Issue 7 https://doi.org/10.1063/1.4990373	journal	July 2017
Principles of Plasma Discharges and Materials Processing Lieberman, Michael A.; Lichtenberg, Allan J. https://doi.org/10.1002/0471724254	book	January 2005
ICRF-enhanced plasma potentials in the SOL of Alcator C-Mod Ochoukov, R.; Whyte, D. G.; Brunner, D. Plasma Physics and Controlled Fusion, Vol. 56, Issue 1 https://doi.org/10.1088/0741-3335/56/1/015004	journal	December 2013
Radio frequency sheaths in an oblique magnetic field Myra, J. R.; D'Ippolito, D. A. Physics of Plasmas, Vol. 22, Issue 6 https://doi.org/10.1063/1.4922848	journal	June 2015
hPIC: A scalable electrostatic Particle-in-Cell for Plasma–Material Interactions Khaziev, Rinat; Curreli, Davide Computer Physics Communications, Vol. 229 https://doi.org/10.1016/j.cpc.2018.03.028	journal	August 2018
Hot spot phenomena on Tore Supra ICRF antennas investigated by optical diagnostics Colas, L.; Costanzo, L.; Desgranges, C. Nuclear Fusion, Vol. 43, Issue 1 https://doi.org/10.1088/0029-5515/43/1/301	journal	December 2002
Characterization and performance of a field aligned ion cyclotron range of frequency antenna in Alcator C-Mod Wukitch, S. J.; Garrett, M. L.; Ochoukov, R. Physics of Plasmas, Vol. 20, Issue 5 https://doi.org/10.1063/1.4803882	journal	May 2013
Characterization of heat flux generated by ICRH heating with cantilevered bars and a slotted box Faraday screen Corre, Y.; Firdaouss, M.; Colas, L. Nuclear Fusion, Vol. 52, Issue 10 https://doi.org/10.1088/0029-5515/52/10/103010	journal	August 2012
Nonlinear ICRF-plasma interactions Myra, J. R.; D'Ippolito, D. A.; Russell, D. A. Nuclear Fusion, Vol. 46, Issue 7 https://doi.org/10.1088/0029-5515/46/7/S08	journal	June 2006
Ion energy-angle distribution functions at the plasma-material interface in oblique magnetic fields Khaziev, Rinat; Curreli, Davide Physics of Plasmas, Vol. 22, Issue 4 https://doi.org/10.1063/1.4916910	journal	April 2015
Bi-CGSTAB: A Fast and Smoothly Converging Variant of Bi-CG for the Solution of Nonsymmetric Linear Systems van der Vorst, H. A. SIAM Journal on Scientific and Statistical Computing, Vol. 13, Issue 2 https://doi.org/10.1137/0913035	journal	March 1992
VORPAL: a versatile plasma simulation code Nieter, Chet; Cary, John R. Journal of Computational Physics, Vol. 196, Issue 2 https://doi.org/10.1016/j.jcp.2003.11.004	journal	May 2004
Particle-in-cell charged-particle simulations, plus Monte Carlo collisions with neutral atoms, PIC-MCC Birdsall, C. K. IEEE Transactions on Plasma Science, Vol. 19, Issue 2 https://doi.org/10.1109/27.106800	journal	April 1991
SOL RF physics modelling in Europe, in support of ICRF experiments Colas, Laurent; Lu, LingFeng; Jacquot, Jonathan EPJ Web of Conferences, Vol. 157 https://doi.org/10.1051/epjconf/201715701001	journal	January 2017
Electromagnetic simulations of JET ICRF ITER-like antenna with TOPICA and SSWICH asymptotic codes Křivská, Alena; Bobkov, Volodymyr; Colas, Laurent EPJ Web of Conferences, Vol. 157 https://doi.org/10.1051/epjconf/201715703026	journal	January 2017
ICRF operation with improved antennas in ASDEX Upgrade with W wall Bobkov, V.; Balden, M.; Bilato, R. Nuclear Fusion, Vol. 53, Issue 9 https://doi.org/10.1088/0029-5515/53/9/093018	journal	August 2013
ARC: A compact, high-field, fusion nuclear science facility and demonstration power plant with demountable magnets Sorbom, B. N.; Ball, J.; Palmer, T. R. Fusion Engineering and Design, Vol. 100 https://doi.org/10.1016/j.fusengdes.2015.07.008	journal	November 2015
RF current distribution and topology of RF sheath potentials in front of ICRF antennae Colas, L.; Heuraux, S.; Brémond, S. Nuclear Fusion, Vol. 45, Issue 8 https://doi.org/10.1088/0029-5515/45/8/002	journal	July 2005
Metallic impurity content behavior during ICRH-heated L-mode discharges in EAST Urbanczyk, G.; Zhang, X. J.; Zhang, L. Nuclear Fusion, Vol. 60, Issue 12 https://doi.org/10.1088/1741-4326/abae82	journal	September 2020
Numerical model of the radio-frequency magnetic presheath including wall impurities Elias, M.; Curreli, D.; Jenkins, T. G. Physics of Plasmas, Vol. 26, Issue 9 https://doi.org/10.1063/1.5109256	journal	September 2019
How to normalize Maxwell–Boltzmann electrons in transient plasma models Hagelaar, G. J. M. Journal of Computational Physics, Vol. 227, Issue 2 https://doi.org/10.1016/j.jcp.2007.09.023	journal	December 2007
Overview of ITER physics deuterium-tritium experiments in JET Jacquinot, J.; Bhatnagar, V. P.; Cordey, J. G. Nuclear Fusion, Vol. 39, Issue 2 https://doi.org/10.1088/0029-5515/39/2/307	journal	February 1999
Radio-frequency sheaths physics: Experimental characterization on Tore Supra and related self-consistent modeling Jacquot, Jonathan; Milanesio, Daniele; Colas, Laurent Physics of Plasmas, Vol. 21, Issue 6 https://doi.org/10.1063/1.4884778	journal	June 2014
ERO modeling and sensitivity analysis of locally enhanced beryllium erosion by magnetically connected antennas Lasa, A.; Borodin, D.; Canik, J. M. Nuclear Fusion, Vol. 58, Issue 1 https://doi.org/10.1088/1741-4326/aa90c0	journal	December 2017
Effect of net direct current on the properties of radio frequency sheaths: simulation and cross-code comparison Myra, J. R.; Elias, M. T.; Curreli, D. Nuclear Fusion, Vol. 61, Issue 1 https://doi.org/10.1088/1741-4326/abc4c4	journal	December 2020
An explicit scheme to enforce charge conservation in transient Particle-in-Cell simulations with Maxwell-Boltzmann electrons Elias, Moutaz; Curreli, Davide Journal of Computational Physics, Vol. 409 https://doi.org/10.1016/j.jcp.2020.109320	journal	May 2020
Ion energy distributions in rf sheaths; review, analysis and simulation Kawamura, E.; Vahedi, V.; Lieberman, M. A. Plasma Sources Science and Technology, Vol. 8, Issue 3 https://doi.org/10.1088/0963-0252/8/3/202	journal	January 1999
Experimental investigation of the potentials modified by radio frequency sheaths during ion cyclotron range of frequency on EAST Qin, C. M.; Zhao, Y. P.; QWang, H. Plasma Physics and Controlled Fusion, Vol. 55, Issue 1 https://doi.org/10.1088/0741-3335/55/1/015004	journal	December 2012
ICRF-edge and surface interactions D’Ippolito, D. A.; Myra, J. R. Journal of Nuclear Materials, Vol. 415, Issue 1 https://doi.org/10.1016/j.jnucmat.2010.08.039	journal	August 2011
Plasma-materials interactions during RF experiments in tokamaks Cohen, S. A.; Bernabei, S.; Budny, R. Journal of Nuclear Materials, Vol. 128-129 https://doi.org/10.1016/0022-3115(84)90367-2	journal	December 1984
RF plasma edge interactions and their impact on ICRF antenna performance in Alcator C-Mod Wukitch, S. J.; Lipschultz, B.; Marmar, E. Journal of Nuclear Materials, Vol. 363-365 https://doi.org/10.1016/j.jnucmat.2007.01.273	journal	June 2007
The interaction between waves in the ion cyclotron range of frequencies and the plasma boundary Noterdaeme, J. -M; Oost, G. Van Plasma Physics and Controlled Fusion, Vol. 35, Issue 11 https://doi.org/10.1088/0741-3335/35/11/001	journal	November 1993
Faraday screen sheaths and impurity production during ion cyclotron heating Myra, J. R.; D'Ippolito, D. A.; Gerver, M. J. Nuclear Fusion, Vol. 30, Issue 5 https://doi.org/10.1088/0029-5515/30/5/004	journal	May 1990
Estimates of RF-induced erosion at antenna-connected beryllium plasma-facing components in JET Klepper, C. C.; Borodin, D.; Groth, M. Physica Scripta, Vol. T167 https://doi.org/10.1088/0031-8949/T167/1/014035	journal	January 2016

Similar Records

Effect of net direct current on the properties of radio frequency sheaths: simulation and cross-code comparison

Journal Article · Mon Dec 14 00:00:00 EST 2020 · Nuclear Fusion · OSTI ID:1852490

Myra, J. R.; Elias, M. T.; Curreli, D.; +1 more

The distribution of ion energies incident on an ICRH (ion cyclotron resonant heating) antenna Faraday shield

Miscellaneous · Sun Jan 01 00:00:00 EST 1989 · OSTI ID:1852490

Modeling of DC potential structures induced by RF sheaths with transverse currents in front of ICRF antenna

Journal Article · Fri Sep 28 00:00:00 EDT 2007 · AIP Conference Proceedings · OSTI ID:1852490

Faudot, E; Heuraux, S; Colas, L

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
Physics
particle-in-cell method
RF waves
plasma sheaths

Title: Energy-angle distribution of the ions in the RF sheath of ICRH antennas

Citation Formats

References (38)

Similar Records

Related Subjects