Modeling of plasma beta effects on the island divertor transport in the standard configuration of W7-X

Xu, Shuai; Liang, Y.; Knieps, Alexander; Zhou, Song; Feng, Yuhe; Reiter, D.; Suzuki, Yasuhiro; Jia, Manni; Geiger, Joachim; Reimold, F.; König, R.; Dinklage, Andreas; Harting, D.; Luo, Y.; Drews, Philipp; Jakubowski, Marcin; Gao, Yu; Pasch, E.; Pandey, A.; Langenberg, Andreas; Pablant, Novimir; Brezinsek, Sebastijan; Wang, E.; Liu, S.; Xiang, H. M.; Neubauer, O.; Huang, J.; Cai, J.; Yang, J.; Liu, J.; Liao, L.; Gao, Y. C.

doi:10.1088/1741-4326/acc7b8

Modeling of plasma beta effects on the island divertor transport in the standard configuration of W7-X

Journal Article · Tue Apr 11 00:00:00 EDT 2023 · Nuclear Fusion

DOI:https://doi.org/10.1088/1741-4326/acc7b8· OSTI ID:1974428

^[1]; Liang, Y. ^[2]; ^[1]; ^[3]; ^[4]; Reiter, D. ^[5]; ^[6]; ^[7]; ^[4]; Reimold, F. ^[4]; König, R. ^[4]; ^[4]; Harting, D. ^[1]; Luo, Y. ^[1]; ^[1]; ^[4]; ^[4]; Pasch, E. ^[4]; Pandey, A. ^[4]; ^[4] more »

Forschungszentrum Juelich (Germany). Inst. fur Energie- und Klimaforschung-Plasmaphysik
Forschungszentrum Juelich (Germany). Inst. fur Energie- und Klimaforschung-Plasmaphysik; Huazhong Univ. of Science and Technology, Wuhan (China); Chinese Academy of Sciences (CAS), Hefei (China). Institute of Plasma Physics
Huazhong Univ. of Science and Technology, Wuhan (China)
Max Planck Institute for Plasma Physics, Greifswald (Germany)
Heinrich-Heine University, Düsseldorf (Germany)
Hiroshima Univ. (Japan)
Chinese Academy of Sciences (CAS), Hefei (China). Institute of Plasma Physics
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Forschungszentrum Juelich (Germany). Inst. fur Energie- und Klimaforschung-Plasmaphysik; Huazhong Univ. of Science and Technology, Wuhan (China)
Forschungszentrum Juelich (Germany). Inst. fur Energie- und Klimaforschung-Plasmaphysik; Chinese Academy of Sciences (CAS), Hefei (China). Institute of Plasma Physics

The influence of plasma beta effects on the edge plasma transport in the Wendelstein 7-X standard configuration is studied systematically by using EMC3-EIRENE combined with a 3D equilibrium code named HINT. The magnetic topology changes induced by plasma beta effects are significantly reflected in plasma transport behaviors and heat flux patterns on divertor targets. After validating the modeling strategy by comparisons with experimental data, the extended simulations for high performance plasmas show that the threshold separatrix density for accessing the power detachment is reduced in higher beta plasmas. Compared with the vacuum field case, the impurity radiation distributions with finite beta effects are modified in the magnetic island region. The divertor heat flux is distributed more evenly along the toroidal direction on the strike line at the vertical target. The strike line on the horizontal target moves towards the pumping gap with an increase in the plasma beta. In addition, the different pressure profiles with the same central beta also result in a modified heat flux pattern on the divertor targets.

View Accepted Manuscript (DOE)

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

Sponsoring Organization:: European Union (EU); USDOE

Contributing Organization:: W7-X Team

Grant/Contract Number:: AC02-09CH11466

OSTI ID:: 1974428

Journal Information:: Nuclear Fusion, Journal Name: Nuclear Fusion Journal Issue: 6 Vol. 63; ISSN 0029-5515

Publisher:: IOP ScienceCopyright Statement

Country of Publication:: United States

Language:: English

References (58)

3D Edge Modeling and Island Divertor Physics Feng, Y.; Sardei, F.; Kisslinger, J. Contributions to Plasma Physics, Vol. 44, Issue 13 https://doi.org/10.1002/ctpp.200410009	journal	April 2004
Recent Improvements in the EMC3-Eirene Code: Recent Improvements in the EMC3-Eirene Code Feng, Y.; Frerichs, H.; Kobayashi, M. Contributions to Plasma Physics, Vol. 54, Issue 4-6 https://doi.org/10.1002/ctpp.201410092	journal	June 2014
3D fluid modelling of the edge plasma by means of a Monte Carlo technique Feng, Y.; Sardei, F.; Kisslinger, J. Journal of Nuclear Materials, Vol. 266-269 https://doi.org/10.1016/S0022-3115(98)00844-7	journal	March 1999
Implicit coupling of impurity transport at the SOL–core interface Feng, Y.; Lunt, T.; Sardei, F. Computer Physics Communications, Vol. 184, Issue 6 https://doi.org/10.1016/j.cpc.2013.02.003	journal	June 2013
Edge stability and transport control with resonant magnetic perturbations in collisionless tokamak plasmas Evans, Todd E.; Moyer, Richard A.; Burrell, Keith H. Nature Physics, Vol. 2, Issue 6 https://doi.org/10.1038/nphys312	journal	May 2006
Design criteria of the bolometer diagnostic for steady-state operation of the W7-X stellarator Zhang, D.; Burhenn, R.; Koenig, R. Review of Scientific Instruments, Vol. 81, Issue 10 https://doi.org/10.1063/1.3483194	journal	October 2010
The Thomson scattering system at Wendelstein 7-X Pasch, E.; Beurskens, M. N. A.; Bozhenkov, S. A. Review of Scientific Instruments, Vol. 87, Issue 11 https://doi.org/10.1063/1.4962248	journal	September 2016
Key results from the first plasma operation phase and outlook for future performance in Wendelstein 7-X Sunn Pedersen, Thomas; Dinklage, Andreas; Turkin, Yuriy Physics of Plasmas, Vol. 24, Issue 5 https://doi.org/10.1063/1.4983629	journal	May 2017
Infrared imaging systems for wall protection in the W7-X stellarator (invited) Jakubowski, Marcin; Drewelow, Peter; Fellinger, Joris Review of Scientific Instruments, Vol. 89, Issue 10 https://doi.org/10.1063/1.5038634	journal	October 2018
In situ wavelength calibration system for the X-ray Imaging Crystal Spectrometer (XICS) on W7-X Kring, J.; Pablant, N.; Langenberg, A. Review of Scientific Instruments, Vol. 89, Issue 10 https://doi.org/10.1063/1.5038809	journal	October 2018
The Langmuir probe system in the Wendelstein 7-X test divertor Rudischhauser, L.; Endler, M.; Höfel, U. Review of Scientific Instruments, Vol. 91, Issue 6 https://doi.org/10.1063/1.5143013	journal	June 2020
Physics of the geometry-related detachment stability in W7-AS Feng, Y.; Sardei, F.; Kisslinger, J. Nuclear Fusion, Vol. 45, Issue 2 https://doi.org/10.1088/0029-5515/45/2/003	journal	February 2005
Three-dimensional Monte Carlo simulations of W7-X plasma transport: density control and particle balance in steady-state operations Sharma, D.; Feng, Y.; Sardei, F. Nuclear Fusion, Vol. 45, Issue 8 https://doi.org/10.1088/0029-5515/45/8/008	journal	July 2005
Development and application of HINT2 to helical system plasmas Suzuki, Yasuhiro; Nakajima, Noriyoshi; Watanabe, Kiyomasa Nuclear Fusion, Vol. 46, Issue 11 https://doi.org/10.1088/0029-5515/46/11/L01	journal	September 2006
Physics of island divertors as highlighted by the example of W7-AS Feng, Y.; Sardei, F.; Grigull, P. Nuclear Fusion, Vol. 46, Issue 8 https://doi.org/10.1088/0029-5515/46/8/006	journal	July 2006
Control of 3D edge radiation structure with resonant magnetic perturbation fields applied to the stochastic layer and stabilization of radiative divertor plasma in LHD Kobayashi, M.; Masuzaki, S.; Yamada, I. Nuclear Fusion, Vol. 53, Issue 9 https://doi.org/10.1088/0029-5515/53/9/093032	journal	September 2013
3D effects of edge magnetic field configuration on divertor/scrape-off layer transport and optimization possibilities for a future reactor Kobayashi, M.; Xu, Y.; Ida, K. Nuclear Fusion, Vol. 55, Issue 10 https://doi.org/10.1088/0029-5515/55/10/104021	journal	October 2015
On the W7-X divertor performance under detached conditions Feng, Y.; Beidler, C. D.; Geiger, J. Nuclear Fusion, Vol. 56, Issue 12 https://doi.org/10.1088/0029-5515/56/12/126011	journal	September 2016
Dynamics of three-dimensional radiative structures during RMP assisted detached plasmas on the large helical device and its comparison with EMC3-EIRENE modeling Pandya, Shwetang N.; Peterson, Byron J.; Kobayashi, Masahiro Nuclear Fusion, Vol. 56, Issue 4 https://doi.org/10.1088/0029-5515/56/4/046002	journal	March 2016
EMC3-EIRENE modelling of edge impurity transport in the stochastic layer of the large helical device compared with extreme ultraviolet emission measurements Dai, Shuyu; Kobayashi, M.; Kawamura, G. Nuclear Fusion, Vol. 56, Issue 6 https://doi.org/10.1088/0029-5515/56/6/066005	journal	May 2016
The divertor program in stellarators K. nig, R.; Grigull, P.; McCormick, K. Plasma Physics and Controlled Fusion, Vol. 44, Issue 11 https://doi.org/10.1088/0741-3335/44/11/306	journal	October 2002
Transport in island divertors: physics, 3D modelling and comparison to first experiments on W7-AS* Feng, Y.; Sardei, F.; Grigull, P. Plasma Physics and Controlled Fusion, Vol. 44, Issue 5 https://doi.org/10.1088/0741-3335/44/5/308	journal	May 2002
Numerical modelling of high density JET divertor plasma with the SOLPS4.2 (B2-EIRENE) code Kotov, V.; Reiter, D.; Pitts, R. A. Plasma Physics and Controlled Fusion, Vol. 50, Issue 10 https://doi.org/10.1088/0741-3335/50/10/105012	journal	September 2008
Physics in the magnetic configuration space of W7-X Geiger, J.; Beidler, C. D.; Feng, Y. Plasma Physics and Controlled Fusion, Vol. 57, Issue 1 https://doi.org/10.1088/0741-3335/57/1/014004	journal	November 2014
Impact of nonlinear 3D equilibrium response on edge topology and divertor heat load in Wendelstein 7-X Suzuki, Y.; Geiger, J. Plasma Physics and Controlled Fusion, Vol. 58, Issue 6 https://doi.org/10.1088/0741-3335/58/6/064004	journal	May 2016
Performance and properties of the first plasmas of Wendelstein 7-X Klinger, T.; Alonso, A.; Bozhenkov, S. Plasma Physics and Controlled Fusion, Vol. 59, Issue 1 https://doi.org/10.1088/0741-3335/59/1/014018	journal	October 2016
Monte-Carlo fluid approaches to detached plasmas in non-axisymmetric divertor configurations Feng, Y.; Frerichs, H.; Kobayashi, M. Plasma Physics and Controlled Fusion, Vol. 59, Issue 3 https://doi.org/10.1088/1361-6587/59/3/034006	journal	February 2017
HINT modeling of three-dimensional tokamaks with resonant magnetic perturbation Suzuki, Yasuhiro Plasma Physics and Controlled Fusion, Vol. 59, Issue 5 https://doi.org/10.1088/1361-6587/aa5adc	journal	March 2017
Effect of pressure profile on stochasticity of magnetic field in a conventional stellarator Suzuki, Yasuhiro Plasma Physics and Controlled Fusion, Vol. 62, Issue 10 https://doi.org/10.1088/1361-6587/ab9a13	journal	August 2020
EMC3-EIRENE simulation of first wall recycling fluxes in W7-X with relation to H-alpha measurements Winters, V. R.; Reimold, F.; König, R. Plasma Physics and Controlled Fusion, Vol. 63, Issue 4 https://doi.org/10.1088/1361-6587/abe39c	journal	March 2021
Numerical investigation of plasma edge transport and limiter heat fluxes in Wendelstein 7-X startup plasmas with EMC3-EIRENE Effenberg, F.; Feng, Y.; Schmitz, O. Nuclear Fusion, Vol. 57, Issue 3 https://doi.org/10.1088/1741-4326/aa4f83	journal	January 2017
A fluid-kinetic approach for 3D plasma edge transport in He plasma Rack, M.; Reiter, D.; Hasenbeck, F. Nuclear Fusion, Vol. 57, Issue 5 https://doi.org/10.1088/1741-4326/aa60e4	journal	March 2017
Diagnostic set-up and modelling for investigation of synergy between 3D edge physics and plasma-wall interactions on Wendelstein 7-X Liang, Y.; Neubauer, O.; König, R. Nuclear Fusion, Vol. 57, Issue 6 https://doi.org/10.1088/1741-4326/aa6cde	journal	May 2017
Major results from the first plasma campaign of the Wendelstein 7-X stellarator Wolf, R. C.; Ali, A.; Alonso, A. Nuclear Fusion, Vol. 57, Issue 10 https://doi.org/10.1088/1741-4326/aa770d	journal	July 2017
Control of three dimensional particle flux to divertor using rotating RMP in the EAST tokamak Jia, M.; Sun, Y.; Liang, Y. Nuclear Fusion, Vol. 58, Issue 4 https://doi.org/10.1088/1741-4326/aaaecc	journal	February 2018
First three-dimensional edge plasma transport simulations with magnetic perturbations induced by lower hybrid waves on EAST Xu, S.; Rack, M.; Liang, Y. Nuclear Fusion, Vol. 58, Issue 10 https://doi.org/10.1088/1741-4326/aad296	journal	July 2018
Overview of first Wendelstein 7-X high-performance operation Klinger, T.; Andreeva, T.; Bozhenkov, S. Nuclear Fusion, Vol. 59, Issue 11 https://doi.org/10.1088/1741-4326/ab03a7	journal	June 2019
Methods for quantitative study of divertor heat loads on W7-X Gao, Y.; Jakubowski, Marcin W.; Drewelow, Peter Nuclear Fusion, Vol. 59, Issue 6 https://doi.org/10.1088/1741-4326/ab0f49	journal	April 2019
Impact of a resonant magnetic perturbation field on impurity radiation, divertor footprint, and core plasma transport in attached and detached plasmas in the Large Helical Device Kobayashi, M.; Seki, R.; Masuzaki, S. Nuclear Fusion, Vol. 59, Issue 9 https://doi.org/10.1088/1741-4326/ab26e6	journal	July 2019
First divertor physics studies in Wendelstein 7-X Sunn Pedersen, T.; König, R.; Jakubowski, M. Nuclear Fusion, Vol. 59, Issue 9 https://doi.org/10.1088/1741-4326/ab280f	journal	July 2019
Effects of toroidal plasma current on divertor power depositions on Wendelstein 7-X Gao, Yu; Geiger, Joachim; Jakubowski, Marcin W. Nuclear Fusion, Vol. 59, Issue 10 https://doi.org/10.1088/1741-4326/ab32c2	journal	August 2019
First demonstration of radiative power exhaust with impurity seeding in the island divertor at Wendelstein 7-X Effenberg, F.; Brezinsek, S.; Feng, Y. Nuclear Fusion, Vol. 59, Issue 10 https://doi.org/10.1088/1741-4326/ab32c4	journal	August 2019
Mechanism of the active divertor flux control by the supersonic-molecular-beam-injection with lower hybrid wave-induced magnetic perturbations on the EAST tokamak Xu, S.; Rack, M.; Liang, Y. Nuclear Fusion, Vol. 60, Issue 5 https://doi.org/10.1088/1741-4326/ab796a	journal	April 2020
Stable heat and particle flux detachment with efficient particle exhaust in the island divertor of Wendelstein 7-X Schmitz, Oliver; Feng, Yuhe; Jakubowski, Marcin Nuclear Fusion https://doi.org/10.1088/1741-4326/abb51e	journal	September 2020
Understanding detachment of the W7-X island divertor Feng, Y.; Jakubowski, M.; König, R. Nuclear Fusion, Vol. 61, Issue 8 https://doi.org/10.1088/1741-4326/ac0772	journal	June 2021
Overview of the results from divertor experiments with attached and detached plasmas at Wendelstein 7-X and their implications for steady-state operation Jakubowski, M.; Endler, M.; Feng, Y. Nuclear Fusion, Vol. 61, Issue 10 https://doi.org/10.1088/1741-4326/ac1b68	journal	August 2021
First attempt to quantify W7-X island divertor plasma by local experiment-model comparison Feng, Y.; Gao, Y.; Kremeyer, T. Nuclear Fusion, Vol. 61, Issue 10 https://doi.org/10.1088/1741-4326/ac2025	journal	September 2021
Integrated ELM and divertor power flux control using RMPs with low input torque in EAST in support of the ITER research plan Jia, Manni; Loarte, Alberto; Sun, Youwen Nuclear Fusion, Vol. 61, Issue 10 https://doi.org/10.1088/1741-4326/ac21f9	journal	September 2021
Experimental confirmation of efficient island divertor operation and successful neoclassical transport optimization in Wendelstein 7-X Sunn Pedersen, Thomas Nuclear Fusion https://doi.org/10.1088/1741-4326/ac2cf5	journal	October 2021
Plasma beta effects on the edge magnetic field structure and divertor heat loads in Wendelstein 7-X high-performance scenarios Knieps, A.; Suzuki, Y.; Geiger, J. Nuclear Fusion, Vol. 62, Issue 2 https://doi.org/10.1088/1741-4326/ac3a18	journal	December 2021
Equilibrium effects on the structure of island divertor and its impact on the divertor heat flux distribution in Wendelstein 7-X Zhou, S.; Liang, Y.; Knieps, A. Nuclear Fusion, Vol. 62, Issue 10 https://doi.org/10.1088/1741-4326/ac8439	journal	August 2022
Influence of the X-point location on edge plasma transport in the J-TEXT tokamak with a high-field-side single-null divertor Wang, Hao; Liang, Yunfeng; Xu, Shuai Plasma Science and Technology, Vol. 23, Issue 12 https://doi.org/10.1088/2058-6272/ac224a	journal	November 2021
Magnetic Topology Changes Induced by Lower Hybrid Waves and their Profound Effect on Edge-Localized Modes in the EAST Tokamak Liang, Y.; Gong, X. Z.; Gan, K. F. Physical Review Letters, Vol. 110, Issue 23 https://doi.org/10.1103/PhysRevLett.110.235002	journal	June 2013
First Observation of a Stable Highly Dissipative Divertor Plasma Regime on the Wendelstein 7-X Stellarator Zhang, D.; König, R.; Feng, Y. Physical Review Letters, Vol. 123, Issue 2 https://doi.org/10.1103/PhysRevLett.123.025002	journal	July 2019
Change of the Magnetic-Field Topology by an Ergodic Divertor and the Effect on the Plasma Structure and Transport Jakubowski, M. W.; Schmitz, O.; Abdullaev, S. S. Physical Review Letters, Vol. 96, Issue 3 https://doi.org/10.1103/PhysRevLett.96.035004	journal	January 2006
Active Control of Type-I Edge-Localized Modes with n = 1 Perturbation Fields in the JET Tokamak Liang, Y.; Koslowski, H. R.; Thomas, P. R. Physical Review Letters, Vol. 98, Issue 26 https://doi.org/10.1103/PhysRevLett.98.265004	journal	June 2007
The EIRENE and B2-EIRENE Codes Reiter, D.; Baelmans, M.; Börner, P. Fusion Science and Technology, Vol. 47, Issue 2 https://doi.org/10.13182/FST47-172	journal	February 2005
JURECA: Modular supercomputer at Jülich Supercomputing Centre Krause, Dorian; Thörnig, Philipp Journal of large-scale research facilities JLSRF, Vol. 4 https://doi.org/10.17815/jlsrf-4-121-1	journal	January 2018

Similar Records

Understanding detachment of the W7-X island divertor

Journal Article · Sun Jun 27 20:00:00 EDT 2021 · Nuclear Fusion · OSTI ID:1814207

Exploration of magnetic perturbation effects on advanced divertor configurations in NSTX-U

Dataset · Wed Jun 01 00:00:00 EDT 2016 · OSTI ID:1366498

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
EMC3-EIRENE
beta effect
edge plasma transport
island divertor
magnetic topology

Modeling of plasma beta effects on the island divertor transport in the standard configuration of W7-X

Citation Formats

References (58)

Similar Records

Related Subjects