Experimental confirmation of efficient island divertor operation and successful neoclassical transport optimization in Wendelstein 7-X

被引：34

作者：

Pedersen, Thomas Sunn ^{[1
,2
,3
]}

Abramovic, I ^{[4
]}

Agostinetti, P. ^{[5
]}

Torres, M. Agredano ^{[1
,2
]}

Aekaeslompolo, S. ^{[1
,2
]}

Belloso, J. Alcuson ^{[1
,2
]}

Aleynikov, P. ^{[1
,2
]}

Aleynikova, K. ^{[1
,2
]}

Alhashimi, M. ^{[1
,2
]}

Ali, A. ^{[1
,2
]}

Allen, N. ^{[6
]}

Alonso, A. ^{[7
]}

Anda, G. ^{[8
]}

Andreeva, T. ^{[1
,2
]}

Angioni, C. ^{[1
]}

Arkhipov, A. ^{[1
]}

Arnold, A. ^{[1
,2
]}

Asad, W. ^{[1
]}

Ascasibar, E. ^{[7
]}

Aumeunier, M-H ^{[9
]}

Avramidis, K. ^{[10
]}

Aymerich, E. ^{[11
]}

Baek, S-G ^{[4
]}

Baehner, J. ^{[1
,2
]}

Baillod, A. ^{[12
]}

Balden, M. ^{[1
,2
]}

Baldzuhn, J. ^{[1
,2
]}

Ballinger, S. ^{[4
]}

Banduch, M. ^{[1
,2
]}

Bannmann, S. ^{[1
,2
]}

Navarro, A. Banon ^{[1
,2
]}

Barbui, T. ^{[13
]}

Beidler, C. ^{[1
,2
]}

Belafdil, C. ^{[9
]}

Bencze, A. ^{[8
]}

Benndorf, A. ^{[1
,2
]}

Beurskens, M. ^{[1
,2
]}

Biedermann, C. ^{[1
,2
]}

Biletskyi, O. ^{[14
]}

Blackwell, B. ^{[15
]}

Blatzheim, M. ^{[1
,2
]}

Bluhm, T. ^{[1
,2
]}

Boeckenhoff, D. ^{[1
,2
]}

Bongiovi, G. ^{[16
]}

Borchardt, M. ^{[1
,2
]}

Borodin, D. ^{[17
]}

Boscary, J. ^{[1
]}

Bosch, H. ^{[1
,2
,18
]}

Bosmann, T. ^{[19
]}

Boeswirth, B. ^{[1
]}

机构：

[1] Max Planck Inst Plasma Phys, Boltzmannstr 2, D-85748 Garching, Germany

[2] Max Planck Inst Plasma Phys, Greifswald, Germany

[3] Univ Greifswald, Greifswald, Germany

[4] MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[5] Consorzio RFX, Corso Stati Uniti, I-435127 Padua, Italy

[6] Auburn Univ, Auburn, AL 36849 USA

[7] CIEMAT, Ave Complutense 40, Madrid 28040, Spain

[8] Ctr Energy Res, Konkoly Thege Ut 29-33, H-1121 Budapest, Hungary

[9] CEA Cadarache, F-13115 St Paul Les Durance, France

[10] Karlsruhe Inst Technol, Kaiserstr 12, D-76131 Karlsruhe, Germany

[11] Univ Cagliari, Via Univ 40, I-09124 Cagliari, Italy

[12] Ecole Polytech Fed Lausanne, Swiss Plasma Ctr, CH-1015 Lausanne, Switzerland

[13] Univ Wisconsin, Engn Dr, Madison, WI 53706 USA

[14] Kharkiv Inst Phys & Technol, Inst Plasma Phys, Natl Sci Ctr, Kharkiv, Ukraine

[15] Australian Natl Univ, Canberra, ACT 2601, Australia

[16] Univ Palermo, Dept Engn, Viale Sci,Edificio 6, I-90128 Palermo, Italy

[17] Forschungszentrum Julich, Inst Energie & Klimaforsch Plasmaphys, D-52425 Julich, Germany

[18] Tech Univ Berlin, Str 17 Juni 135, D-10623 Berlin, Germany

[19] Eindhoven Univ Technol, NL-5600 MB Eindhoven, Netherlands

[20] Univ Politecn Cataluna, BarcelonaTech, C Jordi Girona 31, Barcelona 08034, Spain

[21] Culham Ctr Fus Energy, Abingdon OX14 3EB, Oxon, England

[22] Inst Plasmas & Fusao Nucl, Av Rovisco Pais, P-1049001 Lisbon, Portugal

[23] Natl & Kapodistrian Univ Athens, Dept Phys, Athens 15784, Greece

[24] Inst Plasma Phys & Laser Microfus, 23 Hery Str, PL-01497 Warsaw, Poland

[25] ENEA Ctr Ric Frascati, Via Enrico Fermi 45, I-00044 Frascati, RM, Italy

[26] TEC Partner, Lab Plasma Phys, LPP ERM KMS, B-1000 Brussels, Belgium

[27] Dutch Inst Fundamental Energy Res, POB 6336, NL-5600 HH Eindhoven, Netherlands

[28] Univ Texas Austin, Austin, TX 78712 USA

[29] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

[30] Kyushu Univ, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan

[31] Aix Marseille Univ, 58 Blvd Charles Livon, F-13007 Marseille, France

[32] Padova Univ, Dept Phys & Astron, Via Marzolo 8, I-35131 Padua, Italy

[33] Univ Ghent, Dept Appl Phys, Sint Pietersnieuwstr 41 B4, B-9000 Ghent, Belgium

[34] Aalto Univ, Espoo 02150, Finland

[35] Tech Univ Denmark, Dept Phys, Anker Engelunds Vej, DK-2800 Lyngby, Denmark

[36] VTT Tech Res Ctr Finland Ltd, POB 1000, FI-02044 Espoo, Finland

[37] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China

[38] Oak Ridge Natl Lab, 1 Bethel Valley Rd, Oak Ridge, TN 37830 USA

[39] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[40] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany

[41] Natl Inst Nat Sci, Natl Inst Fus Sci, 322-6 Oroshi Cho, Toki, Gifu 5095292, Japan

[42] Univ Innsbruck, Inst Ion Phys & Appl Phys, Innsbruck, Austria

[43] Graz Univ Technol, Rechbauerstr 12, A-8010 Graz, Austria

[44] Austrian Acad Sci, Doktor Ignaz Seipel Pl 2, A-1010 Vienna, Austria

[45] Inst Nucl Res, Prospekt Nauky 47, UA-03028 Kiev, Ukraine

[46] Univ Opole, Pl Kopernika 11a, PL-45001 Opole, Poland

[47] Univ Maryland, Paint Branch Dr, College Pk, MD 20742 USA

[48] Natl Res Nucl Univ MEPhI, Moscow 115409, Russia

[49] Lodz Univ Technol, Dept Microelect & Comp Sci, Wolczanska 221-223, PL-90924 Lodz, Poland

[50] CNR, Piazzale Aldo Moro, I-00185 Rome, Italy

来源：

NUCLEAR FUSION | 2022年 / 62卷 / 04期

关键词：

magnetic confinement; stellarator; Wendelstein; 7-X; divertor; detachment; neoclassical optimization;

D O I：

10.1088/1741-4326/ac2cf5

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We present recent highlights from the most recent operation phases of Wendelstein 7-X, the most advanced stellarator in the world. Stable detachment with good particle exhaust, low impurity content, and energy confinement times exceeding 100 ms, have been maintained for tens of seconds. Pellet fueling allows for plasma phases with reduced ion-temperature-gradient turbulence, and during such phases, the overall confinement is so good (energy confinement times often exceeding 200 ms) that the attained density and temperature profiles would not have been possible in less optimized devices, since they would have had neoclassical transport losses exceeding the heating applied in W7-X. This provides proof that the reduction of neoclassical transport through magnetic field optimization is successful. W7-X plasmas generally show good impurity screening and high plasma purity, but there is evidence of longer impurity confinement times during turbulence-suppressed phases.

引用

页数：13

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