Investigation of beta-limit improvement of helical type plasmas in L=2 Heliotron/Torsatron devices by using higher harmonic modulation
Summary form only given, as follows. We have already shown that the application of the higher harmonic modulation principle to the winding law of the helical coil of the L=1 and L=2 Heliotron/Torsatron can reduce magnetic force on the helical coils. This finding is important from the viewpoint of th...
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| creator | Kovalev, D. Katsurai, M. Osabe, Y. Kano, K. Kogoshi, S. |
| description | Summary form only given, as follows. We have already shown that the application of the higher harmonic modulation principle to the winding law of the helical coil of the L=1 and L=2 Heliotron/Torsatron can reduce magnetic force on the helical coils. This finding is important from the viewpoint of the coil supporting technology of superconducting magnets. Also it was shown that proper values of the higher harmonic modulation constants can effectively produce the magnetic well in a vacuum field. The presence of the magnetic well generally means the possibility of high beta operation, where the beta is plasma pressure/magnetic pressure. We will present calculations for magnetohydrodynamic (MHD) equilibrium of plasmas with non-zero beta values and for the dependence of the beta-limit on the variation of the modulation constants. The latter is important from the economical standpoint of plasma confinement properties of the helical device. For these calculations a three-dimensional MHD spectral inverse equilibrium code VMEC was used. |
| doi_str_mv | 10.1109/PLASMA.1996.550740 |
| format | Conference Proceeding |
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We have already shown that the application of the higher harmonic modulation principle to the winding law of the helical coil of the L=1 and L=2 Heliotron/Torsatron can reduce magnetic force on the helical coils. This finding is important from the viewpoint of the coil supporting technology of superconducting magnets. Also it was shown that proper values of the higher harmonic modulation constants can effectively produce the magnetic well in a vacuum field. The presence of the magnetic well generally means the possibility of high beta operation, where the beta is plasma pressure/magnetic pressure. We will present calculations for magnetohydrodynamic (MHD) equilibrium of plasmas with non-zero beta values and for the dependence of the beta-limit on the variation of the modulation constants. The latter is important from the economical standpoint of plasma confinement properties of the helical device. For these calculations a three-dimensional MHD spectral inverse equilibrium code VMEC was used.</description><identifier>ISSN: 0730-9244</identifier><identifier>ISBN: 9780780333222</identifier><identifier>ISBN: 0780333225</identifier><identifier>EISSN: 2576-7208</identifier><identifier>DOI: 10.1109/PLASMA.1996.550740</identifier><language>eng</language><publisher>United States: IEEE</publisher><subject>70 PLASMA PHYSICS AND FUSION ; BETA RATIO ; HELIOTRON ; Magnetic confinement ; MAGNETIC FIELD CONFIGURATIONS ; Magnetic forces ; Magnetic modulators ; Magnetohydrodynamics ; MHD EQUILIBRIUM ; Plasma applications ; Plasma confinement ; Plasma devices ; Plasma properties ; PLASMA SIMULATION ; Superconducting coils ; SUPERCONDUCTING MAGNETS ; TORSATRON STELLARATORS</subject><ispartof>IEEE Conference Record - Abstracts. 1996 IEEE International Conference on Plasma Science, 1996, p.179</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/550740$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>309,310,780,784,789,790,885,2058,4050,4051,27925,54920</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/550740$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc><backlink>$$Uhttps://www.osti.gov/biblio/431500$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Kovalev, D.</creatorcontrib><creatorcontrib>Katsurai, M.</creatorcontrib><creatorcontrib>Osabe, Y.</creatorcontrib><creatorcontrib>Kano, K.</creatorcontrib><creatorcontrib>Kogoshi, S.</creatorcontrib><title>Investigation of beta-limit improvement of helical type plasmas in L=2 Heliotron/Torsatron devices by using higher harmonic modulation</title><title>IEEE Conference Record - Abstracts. 1996 IEEE International Conference on Plasma Science</title><addtitle>PLASMA</addtitle><description>Summary form only given, as follows. We have already shown that the application of the higher harmonic modulation principle to the winding law of the helical coil of the L=1 and L=2 Heliotron/Torsatron can reduce magnetic force on the helical coils. This finding is important from the viewpoint of the coil supporting technology of superconducting magnets. Also it was shown that proper values of the higher harmonic modulation constants can effectively produce the magnetic well in a vacuum field. The presence of the magnetic well generally means the possibility of high beta operation, where the beta is plasma pressure/magnetic pressure. We will present calculations for magnetohydrodynamic (MHD) equilibrium of plasmas with non-zero beta values and for the dependence of the beta-limit on the variation of the modulation constants. The latter is important from the economical standpoint of plasma confinement properties of the helical device. For these calculations a three-dimensional MHD spectral inverse equilibrium code VMEC was used.</description><subject>70 PLASMA PHYSICS AND FUSION</subject><subject>BETA RATIO</subject><subject>HELIOTRON</subject><subject>Magnetic confinement</subject><subject>MAGNETIC FIELD CONFIGURATIONS</subject><subject>Magnetic forces</subject><subject>Magnetic modulators</subject><subject>Magnetohydrodynamics</subject><subject>MHD EQUILIBRIUM</subject><subject>Plasma applications</subject><subject>Plasma confinement</subject><subject>Plasma devices</subject><subject>Plasma properties</subject><subject>PLASMA SIMULATION</subject><subject>Superconducting coils</subject><subject>SUPERCONDUCTING MAGNETS</subject><subject>TORSATRON STELLARATORS</subject><issn>0730-9244</issn><issn>2576-7208</issn><isbn>9780780333222</isbn><isbn>0780333225</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>1996</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNotUMtqwzAQFH1AQ5ofyEn9ACd62tGhhxDaJuDSQtOzkeV1rGJLxlID-YF-d52my8IOzDDLDEJzShaUErV8z9cfr-sFVSpdSEkyQa7QhMksTTJGVtdoprIVGZdzzhi7QROScZIoJsQdmoXwRcYRknJOJuhn544Qoj3oaL3DvsYlRJ20trMR264f_BE6cPHMNNBao1scTz3gvtWh0wFbh_NHhrcj5-Pg3XLvh6DPCFdwtAYCLk_4O1h3wI09NDDgRg-dd9bgzlff7d_je3Rb6zbA7P9O0efz036zTfK3l91mnSeWUh4TyoARRVMjFFUaJFlxrVKaQSUyLirJJWFGpGlZC0NJxkxNoawrVpkahICaT9HDxdePmYtgbATTGO8cmFgITiUho2Z-0VgAKPrBdno4FZei-S9VDXIH</recordid><startdate>1996</startdate><enddate>1996</enddate><creator>Kovalev, D.</creator><creator>Katsurai, M.</creator><creator>Osabe, Y.</creator><creator>Kano, K.</creator><creator>Kogoshi, S.</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers, Inc., Piscataway, NJ (United States)</general><scope>6IE</scope><scope>6IL</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIL</scope><scope>OTOTI</scope></search><sort><creationdate>1996</creationdate><title>Investigation of beta-limit improvement of helical type plasmas in L=2 Heliotron/Torsatron devices by using higher harmonic modulation</title><author>Kovalev, D. ; Katsurai, M. ; Osabe, Y. ; Kano, K. ; Kogoshi, S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i113t-12e20916c4919ae5083a9617ed4734d53502c466bf4c1072cf1ebfd2dcfe44ef3</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>1996</creationdate><topic>70 PLASMA PHYSICS AND FUSION</topic><topic>BETA RATIO</topic><topic>HELIOTRON</topic><topic>Magnetic confinement</topic><topic>MAGNETIC FIELD CONFIGURATIONS</topic><topic>Magnetic forces</topic><topic>Magnetic modulators</topic><topic>Magnetohydrodynamics</topic><topic>MHD EQUILIBRIUM</topic><topic>Plasma applications</topic><topic>Plasma confinement</topic><topic>Plasma devices</topic><topic>Plasma properties</topic><topic>PLASMA SIMULATION</topic><topic>Superconducting coils</topic><topic>SUPERCONDUCTING MAGNETS</topic><topic>TORSATRON STELLARATORS</topic><toplevel>online_resources</toplevel><creatorcontrib>Kovalev, D.</creatorcontrib><creatorcontrib>Katsurai, M.</creatorcontrib><creatorcontrib>Osabe, Y.</creatorcontrib><creatorcontrib>Kano, K.</creatorcontrib><creatorcontrib>Kogoshi, S.</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan All Online (POP All Online) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP All) 1998-Present</collection><collection>OSTI.GOV</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Kovalev, D.</au><au>Katsurai, M.</au><au>Osabe, Y.</au><au>Kano, K.</au><au>Kogoshi, S.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Investigation of beta-limit improvement of helical type plasmas in L=2 Heliotron/Torsatron devices by using higher harmonic modulation</atitle><btitle>IEEE Conference Record - Abstracts. 1996 IEEE International Conference on Plasma Science</btitle><stitle>PLASMA</stitle><date>1996</date><risdate>1996</risdate><spage>179</spage><pages>179-</pages><issn>0730-9244</issn><eissn>2576-7208</eissn><isbn>9780780333222</isbn><isbn>0780333225</isbn><abstract>Summary form only given, as follows. We have already shown that the application of the higher harmonic modulation principle to the winding law of the helical coil of the L=1 and L=2 Heliotron/Torsatron can reduce magnetic force on the helical coils. This finding is important from the viewpoint of the coil supporting technology of superconducting magnets. Also it was shown that proper values of the higher harmonic modulation constants can effectively produce the magnetic well in a vacuum field. The presence of the magnetic well generally means the possibility of high beta operation, where the beta is plasma pressure/magnetic pressure. We will present calculations for magnetohydrodynamic (MHD) equilibrium of plasmas with non-zero beta values and for the dependence of the beta-limit on the variation of the modulation constants. The latter is important from the economical standpoint of plasma confinement properties of the helical device. For these calculations a three-dimensional MHD spectral inverse equilibrium code VMEC was used.</abstract><cop>United States</cop><pub>IEEE</pub><doi>10.1109/PLASMA.1996.550740</doi></addata></record> |
| fulltext | fulltext_linktorsrc |
| identifier | ISSN: 0730-9244 |
| ispartof | IEEE Conference Record - Abstracts. 1996 IEEE International Conference on Plasma Science, 1996, p.179 |
| issn | 0730-9244 2576-7208 |
| language | eng |
| recordid | cdi_ieee_primary_550740 |
| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | 70 PLASMA PHYSICS AND FUSION BETA RATIO HELIOTRON Magnetic confinement MAGNETIC FIELD CONFIGURATIONS Magnetic forces Magnetic modulators Magnetohydrodynamics MHD EQUILIBRIUM Plasma applications Plasma confinement Plasma devices Plasma properties PLASMA SIMULATION Superconducting coils SUPERCONDUCTING MAGNETS TORSATRON STELLARATORS |
| title | Investigation of beta-limit improvement of helical type plasmas in L=2 Heliotron/Torsatron devices by using higher harmonic modulation |
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