Global energy confinement in the initial limiter configuration of Wendelstein 7-X
Global confinement properties of the limiter plasmas of the first operational campaign of W7-X are investigated with special focus on the energy confinement and possible operational limits. The energy confinement time was found to be close to expectations from the empirical ISS04 scaling for stellar...
Gespeichert in:
| Veröffentlicht in: | Nuclear fusion 2018-10, Vol.58 (10), p.106029 |
|---|---|
| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | |
|---|---|
| container_issue | 10 |
| container_start_page | 106029 |
| container_title | Nuclear fusion |
| container_volume | 58 |
| creator | Fuchert, G. Bozhenkov, S.A. Pablant, N. Rahbarnia, K. Turkin, Y. Alonso, A. Andreeva, T. Beidler, C.D. Beurskens, M. Dinklage, A. Geiger, J. Hirsch, M. Höfel, U. Knauer, J. Langenberg, A. Laqua, H.P. Niemann, H. Pasch, E. Pedersen, T. Sunn Stange, T. Svensson, J. Trimino Mora, H. Wurden, G.A. Zhang, D. Wolf, R.C. |
| description | Global confinement properties of the limiter plasmas of the first operational campaign of W7-X are investigated with special focus on the energy confinement and possible operational limits. The energy confinement time was found to be close to expectations from the empirical ISS04 scaling for stellarators. Absolute values up to were achieved. This can be considered as a great success for the initial operation of the device. However, a clear degradation of the performance was observed when radiative losses became significant, which was typically the case at low heating power. While a significant improvement of the plasma purity is expected during divertor operation, the presented results underline the importance of the impurity dynamics for the development of high-performance steady-state scenarios in W7-X. Furthermore, comparisons of the global performance properties with neoclassical transport modeling are presented. These studies are not yet fully conclusive, which could indicate that anomalous transport may have played an essential role in the low-density OP1.1 plasmas. |
| doi_str_mv | 10.1088/1741-4326/aad78b |
| format | Article |
| fullrecord | <record><control><sourceid>iop_osti_</sourceid><recordid>TN_cdi_iop_journals_10_1088_1741_4326_aad78b</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>nfaad78b</sourcerecordid><originalsourceid>FETCH-LOGICAL-c349t-3b90cf7d2db1b4b0161c98f2a2c6a36bfedb9f2dc6a292a7cbc475f34604ca4c3</originalsourceid><addsrcrecordid>eNp1kM1LAzEQxYMoWKt3j4tn1-ZrN5ujFK1CQQRFbyHJJm3KNilJeuh_b5YVb54eM_ze8OYBcIvgA4Jdt0CMopoS3C6k7FmnzsDsb3UOZhBiXjcNai7BVUo7CBFFhMzA-2oISg6V8SZuTpUO3jpv9sbnyvkqb00Rl10hBrd32cQJ2RyjzC74Ktjqy_jeDCmbYmD19zW4sHJI5uZX5-Dz-elj-VKv31avy8d1rQnluSaKQ21Zj3uFFFUQtUjzzmKJdStJq6zpFbe4LxPmWDKtNGWNJbSFVEuqyRzcTXdDyk4kXcLpbQnnjc4CUQY5xQWCE6RjSCkaKw7R7WU8CQTF2JsYSxJjSWLqrVjuJ4sLB7ELx-jLF__jPw6-cBo</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Global energy confinement in the initial limiter configuration of Wendelstein 7-X</title><source>IOP Publishing Journals</source><source>Institute of Physics (IOP) Journals - HEAL-Link</source><creator>Fuchert, G. ; Bozhenkov, S.A. ; Pablant, N. ; Rahbarnia, K. ; Turkin, Y. ; Alonso, A. ; Andreeva, T. ; Beidler, C.D. ; Beurskens, M. ; Dinklage, A. ; Geiger, J. ; Hirsch, M. ; Höfel, U. ; Knauer, J. ; Langenberg, A. ; Laqua, H.P. ; Niemann, H. ; Pasch, E. ; Pedersen, T. Sunn ; Stange, T. ; Svensson, J. ; Trimino Mora, H. ; Wurden, G.A. ; Zhang, D. ; Wolf, R.C.</creator><creatorcontrib>Fuchert, G. ; Bozhenkov, S.A. ; Pablant, N. ; Rahbarnia, K. ; Turkin, Y. ; Alonso, A. ; Andreeva, T. ; Beidler, C.D. ; Beurskens, M. ; Dinklage, A. ; Geiger, J. ; Hirsch, M. ; Höfel, U. ; Knauer, J. ; Langenberg, A. ; Laqua, H.P. ; Niemann, H. ; Pasch, E. ; Pedersen, T. Sunn ; Stange, T. ; Svensson, J. ; Trimino Mora, H. ; Wurden, G.A. ; Zhang, D. ; Wolf, R.C. ; W7-X Team ; Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)</creatorcontrib><description>Global confinement properties of the limiter plasmas of the first operational campaign of W7-X are investigated with special focus on the energy confinement and possible operational limits. The energy confinement time was found to be close to expectations from the empirical ISS04 scaling for stellarators. Absolute values up to were achieved. This can be considered as a great success for the initial operation of the device. However, a clear degradation of the performance was observed when radiative losses became significant, which was typically the case at low heating power. While a significant improvement of the plasma purity is expected during divertor operation, the presented results underline the importance of the impurity dynamics for the development of high-performance steady-state scenarios in W7-X. Furthermore, comparisons of the global performance properties with neoclassical transport modeling are presented. These studies are not yet fully conclusive, which could indicate that anomalous transport may have played an essential role in the low-density OP1.1 plasmas.</description><identifier>ISSN: 0029-5515</identifier><identifier>EISSN: 1741-4326</identifier><identifier>DOI: 10.1088/1741-4326/aad78b</identifier><identifier>CODEN: NUFUAU</identifier><language>eng</language><publisher>United States: IOP Publishing</publisher><subject>70 PLASMA PHYSICS AND FUSION TECHNOLOGY ; energy confinement ; stellarator ; Wendelstein 7-X</subject><ispartof>Nuclear fusion, 2018-10, Vol.58 (10), p.106029</ispartof><rights>EURATOM 2018</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c349t-3b90cf7d2db1b4b0161c98f2a2c6a36bfedb9f2dc6a292a7cbc475f34604ca4c3</citedby><cites>FETCH-LOGICAL-c349t-3b90cf7d2db1b4b0161c98f2a2c6a36bfedb9f2dc6a292a7cbc475f34604ca4c3</cites><orcidid>0000-0003-2991-1484 ; 0000-0002-2107-5488 ; 0000-0002-4395-239X ; 0000-0002-2606-5289 ; 0000000329911484 ; 0000000221075488 ; 000000024395239X ; 0000000226065289</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://iopscience.iop.org/article/10.1088/1741-4326/aad78b/pdf$$EPDF$$P50$$Giop$$Hfree_for_read</linktopdf><link.rule.ids>230,314,776,780,881,27901,27902,53821,53868</link.rule.ids><backlink>$$Uhttps://www.osti.gov/servlets/purl/1470942$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Fuchert, G.</creatorcontrib><creatorcontrib>Bozhenkov, S.A.</creatorcontrib><creatorcontrib>Pablant, N.</creatorcontrib><creatorcontrib>Rahbarnia, K.</creatorcontrib><creatorcontrib>Turkin, Y.</creatorcontrib><creatorcontrib>Alonso, A.</creatorcontrib><creatorcontrib>Andreeva, T.</creatorcontrib><creatorcontrib>Beidler, C.D.</creatorcontrib><creatorcontrib>Beurskens, M.</creatorcontrib><creatorcontrib>Dinklage, A.</creatorcontrib><creatorcontrib>Geiger, J.</creatorcontrib><creatorcontrib>Hirsch, M.</creatorcontrib><creatorcontrib>Höfel, U.</creatorcontrib><creatorcontrib>Knauer, J.</creatorcontrib><creatorcontrib>Langenberg, A.</creatorcontrib><creatorcontrib>Laqua, H.P.</creatorcontrib><creatorcontrib>Niemann, H.</creatorcontrib><creatorcontrib>Pasch, E.</creatorcontrib><creatorcontrib>Pedersen, T. Sunn</creatorcontrib><creatorcontrib>Stange, T.</creatorcontrib><creatorcontrib>Svensson, J.</creatorcontrib><creatorcontrib>Trimino Mora, H.</creatorcontrib><creatorcontrib>Wurden, G.A.</creatorcontrib><creatorcontrib>Zhang, D.</creatorcontrib><creatorcontrib>Wolf, R.C.</creatorcontrib><creatorcontrib>W7-X Team</creatorcontrib><creatorcontrib>Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)</creatorcontrib><title>Global energy confinement in the initial limiter configuration of Wendelstein 7-X</title><title>Nuclear fusion</title><addtitle>NF</addtitle><addtitle>Nucl. Fusion</addtitle><description>Global confinement properties of the limiter plasmas of the first operational campaign of W7-X are investigated with special focus on the energy confinement and possible operational limits. The energy confinement time was found to be close to expectations from the empirical ISS04 scaling for stellarators. Absolute values up to were achieved. This can be considered as a great success for the initial operation of the device. However, a clear degradation of the performance was observed when radiative losses became significant, which was typically the case at low heating power. While a significant improvement of the plasma purity is expected during divertor operation, the presented results underline the importance of the impurity dynamics for the development of high-performance steady-state scenarios in W7-X. Furthermore, comparisons of the global performance properties with neoclassical transport modeling are presented. These studies are not yet fully conclusive, which could indicate that anomalous transport may have played an essential role in the low-density OP1.1 plasmas.</description><subject>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</subject><subject>energy confinement</subject><subject>stellarator</subject><subject>Wendelstein 7-X</subject><issn>0029-5515</issn><issn>1741-4326</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>O3W</sourceid><recordid>eNp1kM1LAzEQxYMoWKt3j4tn1-ZrN5ujFK1CQQRFbyHJJm3KNilJeuh_b5YVb54eM_ze8OYBcIvgA4Jdt0CMopoS3C6k7FmnzsDsb3UOZhBiXjcNai7BVUo7CBFFhMzA-2oISg6V8SZuTpUO3jpv9sbnyvkqb00Rl10hBrd32cQJ2RyjzC74Ktjqy_jeDCmbYmD19zW4sHJI5uZX5-Dz-elj-VKv31avy8d1rQnluSaKQ21Zj3uFFFUQtUjzzmKJdStJq6zpFbe4LxPmWDKtNGWNJbSFVEuqyRzcTXdDyk4kXcLpbQnnjc4CUQY5xQWCE6RjSCkaKw7R7WU8CQTF2JsYSxJjSWLqrVjuJ4sLB7ELx-jLF__jPw6-cBo</recordid><startdate>20181001</startdate><enddate>20181001</enddate><creator>Fuchert, G.</creator><creator>Bozhenkov, S.A.</creator><creator>Pablant, N.</creator><creator>Rahbarnia, K.</creator><creator>Turkin, Y.</creator><creator>Alonso, A.</creator><creator>Andreeva, T.</creator><creator>Beidler, C.D.</creator><creator>Beurskens, M.</creator><creator>Dinklage, A.</creator><creator>Geiger, J.</creator><creator>Hirsch, M.</creator><creator>Höfel, U.</creator><creator>Knauer, J.</creator><creator>Langenberg, A.</creator><creator>Laqua, H.P.</creator><creator>Niemann, H.</creator><creator>Pasch, E.</creator><creator>Pedersen, T. Sunn</creator><creator>Stange, T.</creator><creator>Svensson, J.</creator><creator>Trimino Mora, H.</creator><creator>Wurden, G.A.</creator><creator>Zhang, D.</creator><creator>Wolf, R.C.</creator><general>IOP Publishing</general><general>IOP Science</general><scope>O3W</scope><scope>TSCCA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>OIOZB</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0003-2991-1484</orcidid><orcidid>https://orcid.org/0000-0002-2107-5488</orcidid><orcidid>https://orcid.org/0000-0002-4395-239X</orcidid><orcidid>https://orcid.org/0000-0002-2606-5289</orcidid><orcidid>https://orcid.org/0000000329911484</orcidid><orcidid>https://orcid.org/0000000221075488</orcidid><orcidid>https://orcid.org/000000024395239X</orcidid><orcidid>https://orcid.org/0000000226065289</orcidid></search><sort><creationdate>20181001</creationdate><title>Global energy confinement in the initial limiter configuration of Wendelstein 7-X</title><author>Fuchert, G. ; Bozhenkov, S.A. ; Pablant, N. ; Rahbarnia, K. ; Turkin, Y. ; Alonso, A. ; Andreeva, T. ; Beidler, C.D. ; Beurskens, M. ; Dinklage, A. ; Geiger, J. ; Hirsch, M. ; Höfel, U. ; Knauer, J. ; Langenberg, A. ; Laqua, H.P. ; Niemann, H. ; Pasch, E. ; Pedersen, T. Sunn ; Stange, T. ; Svensson, J. ; Trimino Mora, H. ; Wurden, G.A. ; Zhang, D. ; Wolf, R.C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c349t-3b90cf7d2db1b4b0161c98f2a2c6a36bfedb9f2dc6a292a7cbc475f34604ca4c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</topic><topic>energy confinement</topic><topic>stellarator</topic><topic>Wendelstein 7-X</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fuchert, G.</creatorcontrib><creatorcontrib>Bozhenkov, S.A.</creatorcontrib><creatorcontrib>Pablant, N.</creatorcontrib><creatorcontrib>Rahbarnia, K.</creatorcontrib><creatorcontrib>Turkin, Y.</creatorcontrib><creatorcontrib>Alonso, A.</creatorcontrib><creatorcontrib>Andreeva, T.</creatorcontrib><creatorcontrib>Beidler, C.D.</creatorcontrib><creatorcontrib>Beurskens, M.</creatorcontrib><creatorcontrib>Dinklage, A.</creatorcontrib><creatorcontrib>Geiger, J.</creatorcontrib><creatorcontrib>Hirsch, M.</creatorcontrib><creatorcontrib>Höfel, U.</creatorcontrib><creatorcontrib>Knauer, J.</creatorcontrib><creatorcontrib>Langenberg, A.</creatorcontrib><creatorcontrib>Laqua, H.P.</creatorcontrib><creatorcontrib>Niemann, H.</creatorcontrib><creatorcontrib>Pasch, E.</creatorcontrib><creatorcontrib>Pedersen, T. Sunn</creatorcontrib><creatorcontrib>Stange, T.</creatorcontrib><creatorcontrib>Svensson, J.</creatorcontrib><creatorcontrib>Trimino Mora, H.</creatorcontrib><creatorcontrib>Wurden, G.A.</creatorcontrib><creatorcontrib>Zhang, D.</creatorcontrib><creatorcontrib>Wolf, R.C.</creatorcontrib><creatorcontrib>W7-X Team</creatorcontrib><creatorcontrib>Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)</creatorcontrib><collection>IOP Publishing Free Content</collection><collection>IOPscience (Open Access)</collection><collection>CrossRef</collection><collection>OSTI.GOV - Hybrid</collection><collection>OSTI.GOV</collection><jtitle>Nuclear fusion</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fuchert, G.</au><au>Bozhenkov, S.A.</au><au>Pablant, N.</au><au>Rahbarnia, K.</au><au>Turkin, Y.</au><au>Alonso, A.</au><au>Andreeva, T.</au><au>Beidler, C.D.</au><au>Beurskens, M.</au><au>Dinklage, A.</au><au>Geiger, J.</au><au>Hirsch, M.</au><au>Höfel, U.</au><au>Knauer, J.</au><au>Langenberg, A.</au><au>Laqua, H.P.</au><au>Niemann, H.</au><au>Pasch, E.</au><au>Pedersen, T. Sunn</au><au>Stange, T.</au><au>Svensson, J.</au><au>Trimino Mora, H.</au><au>Wurden, G.A.</au><au>Zhang, D.</au><au>Wolf, R.C.</au><aucorp>W7-X Team</aucorp><aucorp>Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Global energy confinement in the initial limiter configuration of Wendelstein 7-X</atitle><jtitle>Nuclear fusion</jtitle><stitle>NF</stitle><addtitle>Nucl. Fusion</addtitle><date>2018-10-01</date><risdate>2018</risdate><volume>58</volume><issue>10</issue><spage>106029</spage><pages>106029-</pages><issn>0029-5515</issn><eissn>1741-4326</eissn><coden>NUFUAU</coden><abstract>Global confinement properties of the limiter plasmas of the first operational campaign of W7-X are investigated with special focus on the energy confinement and possible operational limits. The energy confinement time was found to be close to expectations from the empirical ISS04 scaling for stellarators. Absolute values up to were achieved. This can be considered as a great success for the initial operation of the device. However, a clear degradation of the performance was observed when radiative losses became significant, which was typically the case at low heating power. While a significant improvement of the plasma purity is expected during divertor operation, the presented results underline the importance of the impurity dynamics for the development of high-performance steady-state scenarios in W7-X. Furthermore, comparisons of the global performance properties with neoclassical transport modeling are presented. These studies are not yet fully conclusive, which could indicate that anomalous transport may have played an essential role in the low-density OP1.1 plasmas.</abstract><cop>United States</cop><pub>IOP Publishing</pub><doi>10.1088/1741-4326/aad78b</doi><tpages>12</tpages><orcidid>https://orcid.org/0000-0003-2991-1484</orcidid><orcidid>https://orcid.org/0000-0002-2107-5488</orcidid><orcidid>https://orcid.org/0000-0002-4395-239X</orcidid><orcidid>https://orcid.org/0000-0002-2606-5289</orcidid><orcidid>https://orcid.org/0000000329911484</orcidid><orcidid>https://orcid.org/0000000221075488</orcidid><orcidid>https://orcid.org/000000024395239X</orcidid><orcidid>https://orcid.org/0000000226065289</orcidid><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0029-5515 |
| ispartof | Nuclear fusion, 2018-10, Vol.58 (10), p.106029 |
| issn | 0029-5515 1741-4326 |
| language | eng |
| recordid | cdi_iop_journals_10_1088_1741_4326_aad78b |
| source | IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link |
| subjects | 70 PLASMA PHYSICS AND FUSION TECHNOLOGY energy confinement stellarator Wendelstein 7-X |
| title | Global energy confinement in the initial limiter configuration of Wendelstein 7-X |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-14T10%3A49%3A54IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-iop_osti_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Global%20energy%20confinement%20in%20the%20initial%20limiter%20configuration%20of%20Wendelstein%207-X&rft.jtitle=Nuclear%20fusion&rft.au=Fuchert,%20G.&rft.aucorp=W7-X%20Team&rft.date=2018-10-01&rft.volume=58&rft.issue=10&rft.spage=106029&rft.pages=106029-&rft.issn=0029-5515&rft.eissn=1741-4326&rft.coden=NUFUAU&rft_id=info:doi/10.1088/1741-4326/aad78b&rft_dat=%3Ciop_osti_%3Enfaad78b%3C/iop_osti_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |