Modeling of the control of the driven current profile in ICRF MCCD on EAST plasma
Control of the current profile is a crucial issue for improved confinement and the inhibition of instability in advanced tokamak operation. Using typical discharge data for the Experimental Advanced Superconducting Tokamak, numerical simulations of driven-current profile control in mode conversion c...
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| Veröffentlicht in: | AIP advances 2018-05, Vol.8 (5), p.055315-055315-10 |
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| container_title | AIP advances |
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| creator | Yin, L. Yang, C. Gong, X. Y. Lu, X. Q. Cao, J. J. Wu, Z. Y. Chen, Y. Du, D. |
| description | Control of the current profile is a crucial issue for improved confinement and the inhibition of instability in advanced tokamak operation. Using typical discharge data for the Experimental Advanced Superconducting Tokamak, numerical simulations of driven-current profile control in mode conversion current drive (MCCD) in the ion cyclotron range of frequencies were performed employing a full-wave method and Ehst–Karney efficiency formula. Results indicate that the driven current profile in MCCD can be effectively modified by shifting the mode conversion layer. The peak of the driven current can be located at an aimed position in the normalized minor radius range (−0.60≤r/a≤0) by changing the radiofrequency and the minority-ion concentration. The efficiency of the off-axis MCCD can reach 233 kA/MW through optimization, and the mode converted ion cyclotron wave plays an important role in such scenarios. The effects of electron temperature and plasma density on the driven current profile are also investigated. |
| doi_str_mv | 10.1063/1.5018661 |
| format | Article |
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Y. ; Lu, X. Q. ; Cao, J. J. ; Wu, Z. Y. ; Chen, Y. ; Du, D.</creator><creatorcontrib>Yin, L. ; Yang, C. ; Gong, X. Y. ; Lu, X. Q. ; Cao, J. J. ; Wu, Z. Y. ; Chen, Y. ; Du, D.</creatorcontrib><description>Control of the current profile is a crucial issue for improved confinement and the inhibition of instability in advanced tokamak operation. Using typical discharge data for the Experimental Advanced Superconducting Tokamak, numerical simulations of driven-current profile control in mode conversion current drive (MCCD) in the ion cyclotron range of frequencies were performed employing a full-wave method and Ehst–Karney efficiency formula. Results indicate that the driven current profile in MCCD can be effectively modified by shifting the mode conversion layer. The peak of the driven current can be located at an aimed position in the normalized minor radius range (−0.60≤r/a≤0) by changing the radiofrequency and the minority-ion concentration. 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Y.</creatorcontrib><creatorcontrib>Chen, Y.</creatorcontrib><creatorcontrib>Du, D.</creatorcontrib><title>Modeling of the control of the driven current profile in ICRF MCCD on EAST plasma</title><title>AIP advances</title><description>Control of the current profile is a crucial issue for improved confinement and the inhibition of instability in advanced tokamak operation. Using typical discharge data for the Experimental Advanced Superconducting Tokamak, numerical simulations of driven-current profile control in mode conversion current drive (MCCD) in the ion cyclotron range of frequencies were performed employing a full-wave method and Ehst–Karney efficiency formula. Results indicate that the driven current profile in MCCD can be effectively modified by shifting the mode conversion layer. The peak of the driven current can be located at an aimed position in the normalized minor radius range (−0.60≤r/a≤0) by changing the radiofrequency and the minority-ion concentration. The efficiency of the off-axis MCCD can reach 233 kA/MW through optimization, and the mode converted ion cyclotron wave plays an important role in such scenarios. The effects of electron temperature and plasma density on the driven current profile are also investigated.</description><subject>Computer simulation</subject><subject>Conversion</subject><subject>Cyclotron frequency</subject><subject>Cyclotrons</subject><subject>Electron energy</subject><subject>Ion concentration</subject><subject>Ion cyclotron radiation</subject><subject>Ions</subject><subject>Mathematical models</subject><subject>Plasma</subject><subject>Plasma control</subject><subject>Plasma density</subject><subject>Radio frequency</subject><subject>Stability</subject><subject>Tokamak devices</subject><issn>2158-3226</issn><issn>2158-3226</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>DOA</sourceid><recordid>eNqdkU1LAzEQhhdRsNQe_AcBTwqtk2STTY5ltVpoEbWeQ5pNasp2U7Pbgv_e1a0fZ4eB-eDhnRkmSc4xjDBweo1HDLDgHB8lPYKZGFJC-PGf_DQZ1PUaWkslBpH2ksd5KGzpqxUKDjWvFplQNTGU32UR_d5WyOxitFWDtjE4X1rkKzTNnyZonuc3KFTodvy8QNtS1xt9lpw4XdZ2cIj95GVyu8jvh7OHu2k-ng0NFaIZLinjXBOKHWXMOI5TzjIOxIEkKWOQMWslllRwYYQmIDOLDRhpLZAsk0D7ybTTLYJeq230Gx3fVdBefTVCXCkdG29Kq8TSOWEKqYGlKaUghbCEGWxx64YVrdZFp9Xe97azdaPWYRerdn1FQLQrQEazlrrsKBNDXUfrfqZiUJ8PUFgdHtCyVx1bG9_oxofqf_A-xF9QbQtHPwDX0Y7i</recordid><startdate>201805</startdate><enddate>201805</enddate><creator>Yin, L.</creator><creator>Yang, C.</creator><creator>Gong, X. Y.</creator><creator>Lu, X. Q.</creator><creator>Cao, J. J.</creator><creator>Wu, Z. Y.</creator><creator>Chen, Y.</creator><creator>Du, D.</creator><general>American Institute of Physics</general><general>AIP Publishing LLC</general><scope>AJDQP</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>DOA</scope><orcidid>https://orcid.org/0000-0002-3636-2543</orcidid><orcidid>https://orcid.org/0000-0003-0194-3038</orcidid><orcidid>https://orcid.org/0000-0001-6759-4358</orcidid><orcidid>https://orcid.org/0000-0001-9941-0787</orcidid></search><sort><creationdate>201805</creationdate><title>Modeling of the control of the driven current profile in ICRF MCCD on EAST plasma</title><author>Yin, L. ; Yang, C. ; Gong, X. Y. ; Lu, X. Q. ; Cao, J. J. ; Wu, Z. Y. ; Chen, Y. ; Du, D.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c388t-b3566a231f355cf614657602f092455075ee9193868c8a2097e1c0c9ee0277903</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Computer simulation</topic><topic>Conversion</topic><topic>Cyclotron frequency</topic><topic>Cyclotrons</topic><topic>Electron energy</topic><topic>Ion concentration</topic><topic>Ion cyclotron radiation</topic><topic>Ions</topic><topic>Mathematical models</topic><topic>Plasma</topic><topic>Plasma control</topic><topic>Plasma density</topic><topic>Radio frequency</topic><topic>Stability</topic><topic>Tokamak devices</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yin, L.</creatorcontrib><creatorcontrib>Yang, C.</creatorcontrib><creatorcontrib>Gong, X. Y.</creatorcontrib><creatorcontrib>Lu, X. Q.</creatorcontrib><creatorcontrib>Cao, J. J.</creatorcontrib><creatorcontrib>Wu, Z. Y.</creatorcontrib><creatorcontrib>Chen, Y.</creatorcontrib><creatorcontrib>Du, D.</creatorcontrib><collection>AIP Open Access Journals</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>AIP advances</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yin, L.</au><au>Yang, C.</au><au>Gong, X. Y.</au><au>Lu, X. Q.</au><au>Cao, J. J.</au><au>Wu, Z. Y.</au><au>Chen, Y.</au><au>Du, D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Modeling of the control of the driven current profile in ICRF MCCD on EAST plasma</atitle><jtitle>AIP advances</jtitle><date>2018-05</date><risdate>2018</risdate><volume>8</volume><issue>5</issue><spage>055315</spage><epage>055315-10</epage><pages>055315-055315-10</pages><issn>2158-3226</issn><eissn>2158-3226</eissn><coden>AAIDBI</coden><abstract>Control of the current profile is a crucial issue for improved confinement and the inhibition of instability in advanced tokamak operation. Using typical discharge data for the Experimental Advanced Superconducting Tokamak, numerical simulations of driven-current profile control in mode conversion current drive (MCCD) in the ion cyclotron range of frequencies were performed employing a full-wave method and Ehst–Karney efficiency formula. Results indicate that the driven current profile in MCCD can be effectively modified by shifting the mode conversion layer. The peak of the driven current can be located at an aimed position in the normalized minor radius range (−0.60≤r/a≤0) by changing the radiofrequency and the minority-ion concentration. The efficiency of the off-axis MCCD can reach 233 kA/MW through optimization, and the mode converted ion cyclotron wave plays an important role in such scenarios. The effects of electron temperature and plasma density on the driven current profile are also investigated.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.5018661</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0002-3636-2543</orcidid><orcidid>https://orcid.org/0000-0003-0194-3038</orcidid><orcidid>https://orcid.org/0000-0001-6759-4358</orcidid><orcidid>https://orcid.org/0000-0001-9941-0787</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Computer simulation Conversion Cyclotron frequency Cyclotrons Electron energy Ion concentration Ion cyclotron radiation Ions Mathematical models Plasma Plasma control Plasma density Radio frequency Stability Tokamak devices |
| title | Modeling of the control of the driven current profile in ICRF MCCD on EAST plasma |
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