Analysis of higher harmonics on bidirectional heat pulse propagation experiment in helical and tokamak plasmas
In this contribution we analyze modulation electron cyclotron resonance heating (MECH) experiment and discuss higher harmonic frequency dependence of transport coefficients. We use the bidirectional heat pulse propagation method, in which both inward propagating heat pulse and outward propagating he...
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| Veröffentlicht in: | Nuclear fusion 2017-05, Vol.57 (7), p.76013 |
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| creator | Kobayashi, T. Ida, K. Inagaki, S. Tsuchiya, H. Tamura, N. Choe, G.H. Yun, G.S. Park, H.K. Ko, W.H. Evans, T.E. Austin, M.E. Shafer, M.W. Ono, M. López-bruna, D. Ochando, M.A. Estrada, T. Hidalgo, C. Moon, C. Igami, H. Yoshimura, Y. Tsujimura, T.Ii Itoh, S.-I. Itoh, K. |
| description | In this contribution we analyze modulation electron cyclotron resonance heating (MECH) experiment and discuss higher harmonic frequency dependence of transport coefficients. We use the bidirectional heat pulse propagation method, in which both inward propagating heat pulse and outward propagating heat pulse are analyzed at a radial range, in order to distinguish frequency dependence of transport coefficients due to hysteresis from that due to other reasons, such as radially dependent transport coefficients, a finite damping term, or boundary effects. The method is applied to MECH experiments performed in various helical and tokamak devices, i.e. Large Helical Device (LHD), TJ-II, Korea Superconducting Tokamak Advanced Research (KSTAR), and Doublet III-D (DIII-D) with different plasma conditions. The frequency dependence of transport coefficients are clearly observed, showing a possibility of existence of transport hysteresis in flux-gradient relation. |
| doi_str_mv | 10.1088/1741-4326/aa6f1f |
| format | Article |
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(ORNL), Oak Ridge, TN (United States)</creatorcontrib><title>Analysis of higher harmonics on bidirectional heat pulse propagation experiment in helical and tokamak plasmas</title><title>Nuclear fusion</title><addtitle>NF</addtitle><addtitle>Nucl. Fusion</addtitle><description>In this contribution we analyze modulation electron cyclotron resonance heating (MECH) experiment and discuss higher harmonic frequency dependence of transport coefficients. We use the bidirectional heat pulse propagation method, in which both inward propagating heat pulse and outward propagating heat pulse are analyzed at a radial range, in order to distinguish frequency dependence of transport coefficients due to hysteresis from that due to other reasons, such as radially dependent transport coefficients, a finite damping term, or boundary effects. The method is applied to MECH experiments performed in various helical and tokamak devices, i.e. Large Helical Device (LHD), TJ-II, Korea Superconducting Tokamak Advanced Research (KSTAR), and Doublet III-D (DIII-D) with different plasma conditions. The frequency dependence of transport coefficients are clearly observed, showing a possibility of existence of transport hysteresis in flux-gradient relation.</description><subject>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</subject><subject>heat pulse propagation</subject><subject>heat transport</subject><subject>modulation ECH</subject><issn>0029-5515</issn><issn>1741-4326</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNp9kE1LAzEQhoMoWKt3j8GDJ9dONtlu9ljELyh48R5m8-FG22RJtqD_3pSKJ_E08M7zDsxDyCWDWwZSLlgrWCV4vVwgLh1zR2T2Gx2TGUDdVU3DmlNylvM7ABOM8xkJq4Cbr-wzjY4O_m2wiQ6YtjF4XbJAe298snrysYB0sDjRcbfJlo4pjviG-wW1n6NNfmvDRH0o0MbrAmMwdIofuMUPOm4wbzGfkxOHpX3xM-fk9eH-9e6pWr88Pt-t1pUWHUyVk1hLIxsNtukYAjMGOy4AZS8dZx2zrRE9g7oFUQvTGS170dV9z2vNNfI5uTqcjXnyKms_WT3oGEJ5RDGxlABdgeAA6RRzTtapsfyA6UsxUHunai9Q7QWqg9NSuTlUfBzVe9yl4iT_h1__gQenmla1CtolMK5G4_g35cCHJQ</recordid><startdate>20170517</startdate><enddate>20170517</enddate><creator>Kobayashi, T.</creator><creator>Ida, K.</creator><creator>Inagaki, S.</creator><creator>Tsuchiya, H.</creator><creator>Tamura, N.</creator><creator>Choe, G.H.</creator><creator>Yun, G.S.</creator><creator>Park, H.K.</creator><creator>Ko, W.H.</creator><creator>Evans, T.E.</creator><creator>Austin, M.E.</creator><creator>Shafer, M.W.</creator><creator>Ono, M.</creator><creator>López-bruna, D.</creator><creator>Ochando, M.A.</creator><creator>Estrada, T.</creator><creator>Hidalgo, C.</creator><creator>Moon, C.</creator><creator>Igami, H.</creator><creator>Yoshimura, Y.</creator><creator>Tsujimura, T.Ii</creator><creator>Itoh, S.-I.</creator><creator>Itoh, K.</creator><general>IOP Publishing</general><general>IOP Science</general><scope>AAYXX</scope><scope>CITATION</scope><scope>OIOZB</scope><scope>OTOTI</scope></search><sort><creationdate>20170517</creationdate><title>Analysis of higher harmonics on bidirectional heat pulse propagation experiment in helical and tokamak plasmas</title><author>Kobayashi, T. ; Ida, K. ; Inagaki, S. ; Tsuchiya, H. ; Tamura, N. ; Choe, G.H. ; Yun, G.S. ; Park, H.K. ; Ko, W.H. ; Evans, T.E. ; Austin, M.E. ; Shafer, M.W. ; Ono, M. ; López-bruna, D. ; Ochando, M.A. ; Estrada, T. ; Hidalgo, C. ; Moon, C. ; Igami, H. ; Yoshimura, Y. ; Tsujimura, T.Ii ; Itoh, S.-I. ; Itoh, K.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c490t-f8a28d85c0e591a01dda9340a8b8f3191e7d4b10270424d9dc8b492bb32c3ca3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</topic><topic>heat pulse propagation</topic><topic>heat transport</topic><topic>modulation ECH</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kobayashi, T.</creatorcontrib><creatorcontrib>Ida, K.</creatorcontrib><creatorcontrib>Inagaki, S.</creatorcontrib><creatorcontrib>Tsuchiya, H.</creatorcontrib><creatorcontrib>Tamura, N.</creatorcontrib><creatorcontrib>Choe, G.H.</creatorcontrib><creatorcontrib>Yun, G.S.</creatorcontrib><creatorcontrib>Park, H.K.</creatorcontrib><creatorcontrib>Ko, W.H.</creatorcontrib><creatorcontrib>Evans, T.E.</creatorcontrib><creatorcontrib>Austin, M.E.</creatorcontrib><creatorcontrib>Shafer, M.W.</creatorcontrib><creatorcontrib>Ono, M.</creatorcontrib><creatorcontrib>López-bruna, D.</creatorcontrib><creatorcontrib>Ochando, M.A.</creatorcontrib><creatorcontrib>Estrada, T.</creatorcontrib><creatorcontrib>Hidalgo, C.</creatorcontrib><creatorcontrib>Moon, C.</creatorcontrib><creatorcontrib>Igami, H.</creatorcontrib><creatorcontrib>Yoshimura, Y.</creatorcontrib><creatorcontrib>Tsujimura, T.Ii</creatorcontrib><creatorcontrib>Itoh, S.-I.</creatorcontrib><creatorcontrib>Itoh, K.</creatorcontrib><creatorcontrib>Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)</creatorcontrib><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>Kobayashi, T.</au><au>Ida, K.</au><au>Inagaki, S.</au><au>Tsuchiya, H.</au><au>Tamura, N.</au><au>Choe, G.H.</au><au>Yun, G.S.</au><au>Park, H.K.</au><au>Ko, W.H.</au><au>Evans, T.E.</au><au>Austin, M.E.</au><au>Shafer, M.W.</au><au>Ono, M.</au><au>López-bruna, D.</au><au>Ochando, M.A.</au><au>Estrada, T.</au><au>Hidalgo, C.</au><au>Moon, C.</au><au>Igami, H.</au><au>Yoshimura, Y.</au><au>Tsujimura, T.Ii</au><au>Itoh, S.-I.</au><au>Itoh, K.</au><aucorp>Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Analysis of higher harmonics on bidirectional heat pulse propagation experiment in helical and tokamak plasmas</atitle><jtitle>Nuclear fusion</jtitle><stitle>NF</stitle><addtitle>Nucl. Fusion</addtitle><date>2017-05-17</date><risdate>2017</risdate><volume>57</volume><issue>7</issue><spage>76013</spage><pages>76013-</pages><issn>0029-5515</issn><eissn>1741-4326</eissn><coden>NUFUAU</coden><abstract>In this contribution we analyze modulation electron cyclotron resonance heating (MECH) experiment and discuss higher harmonic frequency dependence of transport coefficients. We use the bidirectional heat pulse propagation method, in which both inward propagating heat pulse and outward propagating heat pulse are analyzed at a radial range, in order to distinguish frequency dependence of transport coefficients due to hysteresis from that due to other reasons, such as radially dependent transport coefficients, a finite damping term, or boundary effects. The method is applied to MECH experiments performed in various helical and tokamak devices, i.e. Large Helical Device (LHD), TJ-II, Korea Superconducting Tokamak Advanced Research (KSTAR), and Doublet III-D (DIII-D) with different plasma conditions. The frequency dependence of transport coefficients are clearly observed, showing a possibility of existence of transport hysteresis in flux-gradient relation.</abstract><cop>United States</cop><pub>IOP Publishing</pub><doi>10.1088/1741-4326/aa6f1f</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| source | Institute of Physics Journals |
| subjects | 70 PLASMA PHYSICS AND FUSION TECHNOLOGY heat pulse propagation heat transport modulation ECH |
| title | Analysis of higher harmonics on bidirectional heat pulse propagation experiment in helical and tokamak plasmas |
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