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Development of a magnetized coaxial plasma gun for compact toroid injection into the C-2 field-reversed configuration device
A compact toroid (CT) injector was developed for the C-2 device, primarily for refueling of field-reversed configurations. The CTs are formed by a magnetized coaxial plasma gun (MCPG), which consists of coaxial cylindrical electrodes and a bias coil for creating a magnetic field. First, a plasma rin...
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Published in: | Review of scientific instruments 2016-05, Vol.87 (5), p.053512-053512 |
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creator | Matsumoto, T. Sekiguchi, J. Asai, T. Gota, H. Garate, E. Allfrey, I. Valentine, T. Morehouse, M. Roche, T. Kinley, J. Aefsky, S. Cordero, M. Waggoner, W. Binderbauer, M. Tajima, T. |
description | A compact toroid (CT) injector was developed for the C-2 device, primarily for refueling of field-reversed configurations. The CTs are formed by a magnetized coaxial plasma gun (MCPG), which consists of coaxial cylindrical electrodes and a bias coil for creating a magnetic field. First, a plasma ring is generated by a discharge between the electrodes and is accelerated by Lorenz self-force. Then, the plasma ring is captured by an interlinkage flux (poloidal flux). Finally, the fully formed CT is ejected from the MCPG. The MCPG described herein has two gas injection ports that are arranged tangentially on the outer electrode. A tungsten-coated inner electrode has a head which can be replaced with a longer one to extend the length of the acceleration region for the CT. The developed MCPG has achieved supersonic CT velocities of ∼100 km/s. Plasma parameters for electron density, electron temperature, and the number of particles are ∼5 × 1021 m−3, ∼40 eV, and 0.5–1.0 × 1019, respectively. |
doi_str_mv | 10.1063/1.4952581 |
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The CTs are formed by a magnetized coaxial plasma gun (MCPG), which consists of coaxial cylindrical electrodes and a bias coil for creating a magnetic field. First, a plasma ring is generated by a discharge between the electrodes and is accelerated by Lorenz self-force. Then, the plasma ring is captured by an interlinkage flux (poloidal flux). Finally, the fully formed CT is ejected from the MCPG. The MCPG described herein has two gas injection ports that are arranged tangentially on the outer electrode. A tungsten-coated inner electrode has a head which can be replaced with a longer one to extend the length of the acceleration region for the CT. The developed MCPG has achieved supersonic CT velocities of ∼100 km/s. Plasma parameters for electron density, electron temperature, and the number of particles are ∼5 × 1021 m−3, ∼40 eV, and 0.5–1.0 × 1019, respectively.</description><identifier>ISSN: 0034-6748</identifier><identifier>EISSN: 1089-7623</identifier><identifier>DOI: 10.1063/1.4952581</identifier><identifier>PMID: 27250428</identifier><identifier>CODEN: RSINAK</identifier><language>eng</language><publisher>United States: American Institute of Physics</publisher><subject>ACCELERATION ; Coated electrodes ; COMPACTS ; Configurations ; CYLINDRICAL CONFIGURATION ; Ejection ; ELECTRODES ; ELECTRON DENSITY ; Electron energy ; ELECTRON TEMPERATURE ; ELECTRONS ; FIELD-REVERSED THETA PINCH DEVICES ; GAS INJECTION ; INJECTION ; INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY ; LENGTH ; MAGNETIC FIELDS ; Magnetism ; PARTICLES ; Plasma ; PLASMA GUNS ; PLASMA RINGS ; Poloidal flux ; Scientific apparatus & instruments ; TUNGSTEN</subject><ispartof>Review of scientific instruments, 2016-05, Vol.87 (5), p.053512-053512</ispartof><rights>Author(s)</rights><rights>2016 Author(s). Published by AIP Publishing.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c411t-e3fa834a1747da84e3216e39a41a300bdad1146fc192dc08c9f8a69d7926634c3</citedby><cites>FETCH-LOGICAL-c411t-e3fa834a1747da84e3216e39a41a300bdad1146fc192dc08c9f8a69d7926634c3</cites><orcidid>0000-0003-1611-1082 ; 0000-0002-0846-8594 ; 0000-0002-2698-4744</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/rsi/article-lookup/doi/10.1063/1.4952581$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>230,314,780,782,784,795,885,27924,27925,76383</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/27250428$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/22597944$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Matsumoto, T.</creatorcontrib><creatorcontrib>Sekiguchi, J.</creatorcontrib><creatorcontrib>Asai, T.</creatorcontrib><creatorcontrib>Gota, H.</creatorcontrib><creatorcontrib>Garate, E.</creatorcontrib><creatorcontrib>Allfrey, I.</creatorcontrib><creatorcontrib>Valentine, T.</creatorcontrib><creatorcontrib>Morehouse, M.</creatorcontrib><creatorcontrib>Roche, T.</creatorcontrib><creatorcontrib>Kinley, J.</creatorcontrib><creatorcontrib>Aefsky, S.</creatorcontrib><creatorcontrib>Cordero, M.</creatorcontrib><creatorcontrib>Waggoner, W.</creatorcontrib><creatorcontrib>Binderbauer, M.</creatorcontrib><creatorcontrib>Tajima, T.</creatorcontrib><title>Development of a magnetized coaxial plasma gun for compact toroid injection into the C-2 field-reversed configuration device</title><title>Review of scientific instruments</title><addtitle>Rev Sci Instrum</addtitle><description>A compact toroid (CT) injector was developed for the C-2 device, primarily for refueling of field-reversed configurations. The CTs are formed by a magnetized coaxial plasma gun (MCPG), which consists of coaxial cylindrical electrodes and a bias coil for creating a magnetic field. First, a plasma ring is generated by a discharge between the electrodes and is accelerated by Lorenz self-force. Then, the plasma ring is captured by an interlinkage flux (poloidal flux). Finally, the fully formed CT is ejected from the MCPG. The MCPG described herein has two gas injection ports that are arranged tangentially on the outer electrode. A tungsten-coated inner electrode has a head which can be replaced with a longer one to extend the length of the acceleration region for the CT. The developed MCPG has achieved supersonic CT velocities of ∼100 km/s. Plasma parameters for electron density, electron temperature, and the number of particles are ∼5 × 1021 m−3, ∼40 eV, and 0.5–1.0 × 1019, respectively.</description><subject>ACCELERATION</subject><subject>Coated electrodes</subject><subject>COMPACTS</subject><subject>Configurations</subject><subject>CYLINDRICAL CONFIGURATION</subject><subject>Ejection</subject><subject>ELECTRODES</subject><subject>ELECTRON DENSITY</subject><subject>Electron energy</subject><subject>ELECTRON TEMPERATURE</subject><subject>ELECTRONS</subject><subject>FIELD-REVERSED THETA PINCH DEVICES</subject><subject>GAS INJECTION</subject><subject>INJECTION</subject><subject>INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY</subject><subject>LENGTH</subject><subject>MAGNETIC FIELDS</subject><subject>Magnetism</subject><subject>PARTICLES</subject><subject>Plasma</subject><subject>PLASMA GUNS</subject><subject>PLASMA RINGS</subject><subject>Poloidal flux</subject><subject>Scientific apparatus & instruments</subject><subject>TUNGSTEN</subject><issn>0034-6748</issn><issn>1089-7623</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNp9kU1vFCEch4nR2LV68AsYEi9qMpU_MMNwbLa-JU286JlQXrZsZoYRmI2afnjp7ro9mMgBCHny8IMfQi-BXADp2Hu44LKlbQ-P0ApILxvRUfYYrQhhvOkE78_Qs5y3pI4W4Ck6o4K2hNN-he6u3M4NcR7dVHD0WONRbyZXwm9nsYn6Z9ADngedR403y4R9TPV4nLUpuMQUg8Vh2jpTQpzqrkRcbh1eNxT74AbbpKpPee-afNgsSe9J63bBuOfoiddDdi-O6zn6_vHDt_Xn5vrrpy_ry-vGcIDSOOZ1z7gGwYXVPXeMQueY1Bw0I-TGagvAO29AUmtIb6TvdSetkLTrGDfsHL0-eGMuQWUTijO3NdBUcytKWykk55V6c6DmFH8sLhc1hmzcMOjJxSUrEJJJAiD6B-EJ3cYlTfUNigIFQUmdK_X2QJkUc07OqzmFUadfCoi6L06BOhZX2VdH43IzOnsi_zZVgXcH4D7-_hNPzC6mB5Oarf8f_O_VfwB26a4l</recordid><startdate>20160501</startdate><enddate>20160501</enddate><creator>Matsumoto, T.</creator><creator>Sekiguchi, J.</creator><creator>Asai, T.</creator><creator>Gota, H.</creator><creator>Garate, E.</creator><creator>Allfrey, I.</creator><creator>Valentine, T.</creator><creator>Morehouse, M.</creator><creator>Roche, T.</creator><creator>Kinley, J.</creator><creator>Aefsky, S.</creator><creator>Cordero, M.</creator><creator>Waggoner, W.</creator><creator>Binderbauer, M.</creator><creator>Tajima, T.</creator><general>American Institute of Physics</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7X8</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0003-1611-1082</orcidid><orcidid>https://orcid.org/0000-0002-0846-8594</orcidid><orcidid>https://orcid.org/0000-0002-2698-4744</orcidid></search><sort><creationdate>20160501</creationdate><title>Development of a magnetized coaxial plasma gun for compact toroid injection into the C-2 field-reversed configuration device</title><author>Matsumoto, T. ; Sekiguchi, J. ; Asai, T. ; Gota, H. ; Garate, E. ; Allfrey, I. ; Valentine, T. ; Morehouse, M. ; Roche, T. ; Kinley, J. ; Aefsky, S. ; Cordero, M. ; Waggoner, W. ; Binderbauer, M. ; Tajima, T.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c411t-e3fa834a1747da84e3216e39a41a300bdad1146fc192dc08c9f8a69d7926634c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>ACCELERATION</topic><topic>Coated electrodes</topic><topic>COMPACTS</topic><topic>Configurations</topic><topic>CYLINDRICAL CONFIGURATION</topic><topic>Ejection</topic><topic>ELECTRODES</topic><topic>ELECTRON DENSITY</topic><topic>Electron energy</topic><topic>ELECTRON TEMPERATURE</topic><topic>ELECTRONS</topic><topic>FIELD-REVERSED THETA PINCH DEVICES</topic><topic>GAS INJECTION</topic><topic>INJECTION</topic><topic>INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY</topic><topic>LENGTH</topic><topic>MAGNETIC FIELDS</topic><topic>Magnetism</topic><topic>PARTICLES</topic><topic>Plasma</topic><topic>PLASMA GUNS</topic><topic>PLASMA RINGS</topic><topic>Poloidal flux</topic><topic>Scientific apparatus & instruments</topic><topic>TUNGSTEN</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Matsumoto, T.</creatorcontrib><creatorcontrib>Sekiguchi, J.</creatorcontrib><creatorcontrib>Asai, T.</creatorcontrib><creatorcontrib>Gota, H.</creatorcontrib><creatorcontrib>Garate, E.</creatorcontrib><creatorcontrib>Allfrey, I.</creatorcontrib><creatorcontrib>Valentine, T.</creatorcontrib><creatorcontrib>Morehouse, M.</creatorcontrib><creatorcontrib>Roche, T.</creatorcontrib><creatorcontrib>Kinley, J.</creatorcontrib><creatorcontrib>Aefsky, S.</creatorcontrib><creatorcontrib>Cordero, M.</creatorcontrib><creatorcontrib>Waggoner, W.</creatorcontrib><creatorcontrib>Binderbauer, M.</creatorcontrib><creatorcontrib>Tajima, T.</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><collection>OSTI.GOV</collection><jtitle>Review of scientific instruments</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Matsumoto, T.</au><au>Sekiguchi, J.</au><au>Asai, T.</au><au>Gota, H.</au><au>Garate, E.</au><au>Allfrey, I.</au><au>Valentine, T.</au><au>Morehouse, M.</au><au>Roche, T.</au><au>Kinley, J.</au><au>Aefsky, S.</au><au>Cordero, M.</au><au>Waggoner, W.</au><au>Binderbauer, M.</au><au>Tajima, T.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Development of a magnetized coaxial plasma gun for compact toroid injection into the C-2 field-reversed configuration device</atitle><jtitle>Review of scientific instruments</jtitle><addtitle>Rev Sci Instrum</addtitle><date>2016-05-01</date><risdate>2016</risdate><volume>87</volume><issue>5</issue><spage>053512</spage><epage>053512</epage><pages>053512-053512</pages><issn>0034-6748</issn><eissn>1089-7623</eissn><coden>RSINAK</coden><abstract>A compact toroid (CT) injector was developed for the C-2 device, primarily for refueling of field-reversed configurations. The CTs are formed by a magnetized coaxial plasma gun (MCPG), which consists of coaxial cylindrical electrodes and a bias coil for creating a magnetic field. First, a plasma ring is generated by a discharge between the electrodes and is accelerated by Lorenz self-force. Then, the plasma ring is captured by an interlinkage flux (poloidal flux). Finally, the fully formed CT is ejected from the MCPG. The MCPG described herein has two gas injection ports that are arranged tangentially on the outer electrode. A tungsten-coated inner electrode has a head which can be replaced with a longer one to extend the length of the acceleration region for the CT. The developed MCPG has achieved supersonic CT velocities of ∼100 km/s. Plasma parameters for electron density, electron temperature, and the number of particles are ∼5 × 1021 m−3, ∼40 eV, and 0.5–1.0 × 1019, respectively.</abstract><cop>United States</cop><pub>American Institute of Physics</pub><pmid>27250428</pmid><doi>10.1063/1.4952581</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0003-1611-1082</orcidid><orcidid>https://orcid.org/0000-0002-0846-8594</orcidid><orcidid>https://orcid.org/0000-0002-2698-4744</orcidid></addata></record> |
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subjects | ACCELERATION Coated electrodes COMPACTS Configurations CYLINDRICAL CONFIGURATION Ejection ELECTRODES ELECTRON DENSITY Electron energy ELECTRON TEMPERATURE ELECTRONS FIELD-REVERSED THETA PINCH DEVICES GAS INJECTION INJECTION INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY LENGTH MAGNETIC FIELDS Magnetism PARTICLES Plasma PLASMA GUNS PLASMA RINGS Poloidal flux Scientific apparatus & instruments TUNGSTEN |
title | Development of a magnetized coaxial plasma gun for compact toroid injection into the C-2 field-reversed configuration device |
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