Major results from the first plasma campaign of the Wendelstein 7-X stellarator
文献类型：期刊论文
| 作者 | Wolf,R.C.1; Ali,A.1; Alonso,A.2; Baldzuhn,J.1; Beidler,C.1; Beurskens,M.1; Biedermann,C.1; Bosch,H.-S.1; Bozhenkov,S.1; Brakel,R.1 |
| 刊名 | Nuclear Fusion
 |
| 出版日期 | 2017-07-27 |
| 卷号 | 57 |
| ISSN号 | 0029-5515 |
| 关键词 | stellarator magnetic confinement plasma heating current drive |
| DOI | 10.1088/1741-4326/aa770d |
| 英文摘要 | Abstract After completing the main construction phase of Wendelstein 7-X (W7-X) and successfully commissioning the device, first plasma operation started at the end of 2015. Integral commissioning of plasma start-up and operation using electron cyclotron resonance heating (ECRH) and an extensive set of plasma diagnostics have been completed, allowing initial physics studies during the first operational campaign. Both in helium and hydrogen, plasma breakdown was easily achieved. Gaining experience with plasma vessel conditioning, discharge lengths could be extended gradually. Eventually, discharges lasted up to 6?s, reaching an injected energy of 4 MJ, which is twice the limit originally agreed for the limiter configuration employed during the first operational campaign. At power levels of 4 MW central electron densities reached 3??×??1019 m?3, central electron temperatures reached values of 7?keV and ion temperatures reached just above 2?keV. Important physics studies during this first operational phase include a first assessment of power balance and energy confinement, ECRH power deposition experiments, 2nd harmonic O-mode ECRH using multi-pass absorption, and current drive experiments using electron cyclotron current drive. As in many plasma discharges the electron temperature exceeds the ion temperature significantly, these plasmas are governed by core electron root confinement showing a strong positive electric field in the plasma centre. |
| 语种 | 英语 |
| 出版者 | IOP Publishing |
| WOS记录号 | IOP:0029-5515-57-10-AA770D |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/125355]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 作者单位 | 1.Max-Planck-Institut für Plasmaphysik Teilinstitut Greifswald, Wendelsteinstr. 1, 17491 Greifswald, Germany 2.CIEMAT, Avenida Complutense, 40, 28040 Madrid, Spain 3.Wigner Research Centre for Physiks, Konkoly Thege Miklós út 29-33, 1121 Budapest, XII., Hungary 4.Forschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung—Plasmaphysik, Partner of the Trilateral Euregio Cluster (TEC), Wilhelm-Johnen-Stra?e, 52428 Jülich, Germany 5.University of Maryland, Paitn Branch Drive, College Park, MA 20742, United States of America 6.Princeton Plasma Physics Laboratory, 100 Stellarator Rd, Princeton, NJ 08540, United States of America 7.Laboratory for Plasma Physics of the Ecole Royale Militaire/Koninklijke Militaire School (LPP-ERM/KMS), Avenue de la Renaissance 30, 1000 Bruxelles, Belgien 8.Los Alamos National Laboratory, Los Alamos, NM 87544, United States of America 9.Lithuanian Energy Institute, Breslaujos g. 3, Kaunas 44403, Lithuania 10.Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139, United States of America |
| 推荐引用方式 GB/T 7714 | Wolf,R.C.,Ali,A.,Alonso,A.,et al. Major results from the first plasma campaign of the Wendelstein 7-X stellarator[J]. Nuclear Fusion,2017,57. |
| APA | Wolf,R.C..,Ali,A..,Alonso,A..,Baldzuhn,J..,Beidler,C..,...&Zuin,M..(2017).Major results from the first plasma campaign of the Wendelstein 7-X stellarator.Nuclear Fusion,57. |
| MLA | Wolf,R.C.,et al."Major results from the first plasma campaign of the Wendelstein 7-X stellarator".Nuclear Fusion 57(2017). |
入库方式： OAI收割
来源：合肥物质科学研究院
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