ROEBEL Assembled Coated Conductors (RACC): Preparation, Properties and Progress
RBCO (R = Y or rare earth element) coated conductors (CC) are the most promising HTS materials for future high field coils operated at moderately high temperature (40-50 K). Coils are planned for the second generation of fusion reactors (DEMO, "DEMOnstrator") and beyond. A ROEBEL bar conce...
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| Veröffentlicht in: | IEEE transactions on applied superconductivity 2007-06, Vol.17 (2), p.3398-3401 |
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| container_title | IEEE transactions on applied superconductivity |
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| creator | Goldacker, W. Frank, A. Heller, R. Schlachter, S.I. Ringsdorf, B. Weiss, K.-R. Schmidt, C. Schuller, S. |
| description | RBCO (R = Y or rare earth element) coated conductors (CC) are the most promising HTS materials for future high field coils operated at moderately high temperature (40-50 K). Coils are planned for the second generation of fusion reactors (DEMO, "DEMOnstrator") and beyond. A ROEBEL bar concept for a high current (kA-class) low AC loss cable is the most suitable assembling technique for conductors in magnet windings due to the flat rectangular cross section. The presented RACC-cable technique (RACC=ROEBEL assembled coated conductors) works with pre-shaping of tapes into strands with the ROEBEL specific meander geometry. The usually very good bending properties of the CC support the assembling procedure of the RACC-cable. We report on a 16 strand RACC-cable with 19 cm transposition length made from CC material from the commercial supplier SuperPower which reached 1020 A transport critical current at 77 K (J eng = 11.3 kAcm -2 ). The basic properties of the virgin YBCO tapes and the shaped strands like orientation and field dependent transport currents, current homogeneity and bending effects, were investigated and correlated with the measured properties of the RACC-cable. Calculation of the self field effects by means of a model adapted to the specific RACC-cable geometry and in particular taking into account the current distribution in the cable, explained the 30% current reduction in the cable quantitatively. |
| doi_str_mv | 10.1109/TASC.2007.899417 |
| format | Article |
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Coils are planned for the second generation of fusion reactors (DEMO, "DEMOnstrator") and beyond. A ROEBEL bar concept for a high current (kA-class) low AC loss cable is the most suitable assembling technique for conductors in magnet windings due to the flat rectangular cross section. The presented RACC-cable technique (RACC=ROEBEL assembled coated conductors) works with pre-shaping of tapes into strands with the ROEBEL specific meander geometry. The usually very good bending properties of the CC support the assembling procedure of the RACC-cable. We report on a 16 strand RACC-cable with 19 cm transposition length made from CC material from the commercial supplier SuperPower which reached 1020 A transport critical current at 77 K (J eng = 11.3 kAcm -2 ). The basic properties of the virgin YBCO tapes and the shaped strands like orientation and field dependent transport currents, current homogeneity and bending effects, were investigated and correlated with the measured properties of the RACC-cable. Calculation of the self field effects by means of a model adapted to the specific RACC-cable geometry and in particular taking into account the current distribution in the cable, explained the 30% current reduction in the cable quantitatively.</description><identifier>ISSN: 1051-8223</identifier><identifier>EISSN: 1558-2515</identifier><identifier>DOI: 10.1109/TASC.2007.899417</identifier><identifier>CODEN: ITASE9</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>Applied sciences ; Assembling ; Assembly ; Cables ; COATINGS ; Coils ; Conducting materials ; Conductors ; COPPER ALLOYS (10 TO 40 CU) ; COPPER OXIDE ; CURRENT ; Current distribution ; Electric connection. Cables. Wiring ; ELECTRICAL CONDUCTORS ; Electrical engineering. Electrical power engineering ; Electromagnets ; Electronics ; Exact sciences and technology ; Fusion power generation ; Fusion reactors ; Geometry ; High temperature superconductors ; HTS coated conductors ; Magnetic materials ; Materials ; Power cables ; R&D ; Rare earth elements ; Research & development ; ROEBEL bar ; self field effects ; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices ; Strands ; Superconducting devices ; Superconducting tapes ; Superconductivity ; SUPERCONDUCTORS ; TAPE ; Transport ; Various equipment and components ; YTTRIUM OXIDE</subject><ispartof>IEEE transactions on applied superconductivity, 2007-06, Vol.17 (2), p.3398-3401</ispartof><rights>2007 INIST-CNRS</rights><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2007</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c418t-5342c92aa738142852284c30272967de01f1ef9822d2db2dc300bafee67491383</citedby><cites>FETCH-LOGICAL-c418t-5342c92aa738142852284c30272967de01f1ef9822d2db2dc300bafee67491383</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/4278106$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>309,310,314,780,784,789,790,796,23928,23929,25138,27922,27923,54756</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/4278106$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=19017033$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Goldacker, W.</creatorcontrib><creatorcontrib>Frank, A.</creatorcontrib><creatorcontrib>Heller, R.</creatorcontrib><creatorcontrib>Schlachter, S.I.</creatorcontrib><creatorcontrib>Ringsdorf, B.</creatorcontrib><creatorcontrib>Weiss, K.-R.</creatorcontrib><creatorcontrib>Schmidt, C.</creatorcontrib><creatorcontrib>Schuller, S.</creatorcontrib><title>ROEBEL Assembled Coated Conductors (RACC): Preparation, Properties and Progress</title><title>IEEE transactions on applied superconductivity</title><addtitle>TASC</addtitle><description>RBCO (R = Y or rare earth element) coated conductors (CC) are the most promising HTS materials for future high field coils operated at moderately high temperature (40-50 K). Coils are planned for the second generation of fusion reactors (DEMO, "DEMOnstrator") and beyond. A ROEBEL bar concept for a high current (kA-class) low AC loss cable is the most suitable assembling technique for conductors in magnet windings due to the flat rectangular cross section. The presented RACC-cable technique (RACC=ROEBEL assembled coated conductors) works with pre-shaping of tapes into strands with the ROEBEL specific meander geometry. The usually very good bending properties of the CC support the assembling procedure of the RACC-cable. We report on a 16 strand RACC-cable with 19 cm transposition length made from CC material from the commercial supplier SuperPower which reached 1020 A transport critical current at 77 K (J eng = 11.3 kAcm -2 ). The basic properties of the virgin YBCO tapes and the shaped strands like orientation and field dependent transport currents, current homogeneity and bending effects, were investigated and correlated with the measured properties of the RACC-cable. Calculation of the self field effects by means of a model adapted to the specific RACC-cable geometry and in particular taking into account the current distribution in the cable, explained the 30% current reduction in the cable quantitatively.</description><subject>Applied sciences</subject><subject>Assembling</subject><subject>Assembly</subject><subject>Cables</subject><subject>COATINGS</subject><subject>Coils</subject><subject>Conducting materials</subject><subject>Conductors</subject><subject>COPPER ALLOYS (10 TO 40 CU)</subject><subject>COPPER OXIDE</subject><subject>CURRENT</subject><subject>Current distribution</subject><subject>Electric connection. Cables. Wiring</subject><subject>ELECTRICAL CONDUCTORS</subject><subject>Electrical engineering. Electrical power engineering</subject><subject>Electromagnets</subject><subject>Electronics</subject><subject>Exact sciences and technology</subject><subject>Fusion power generation</subject><subject>Fusion reactors</subject><subject>Geometry</subject><subject>High temperature superconductors</subject><subject>HTS coated conductors</subject><subject>Magnetic materials</subject><subject>Materials</subject><subject>Power cables</subject><subject>R&D</subject><subject>Rare earth elements</subject><subject>Research & development</subject><subject>ROEBEL bar</subject><subject>self field effects</subject><subject>Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices</subject><subject>Strands</subject><subject>Superconducting devices</subject><subject>Superconducting tapes</subject><subject>Superconductivity</subject><subject>SUPERCONDUCTORS</subject><subject>TAPE</subject><subject>Transport</subject><subject>Various equipment and components</subject><subject>YTTRIUM OXIDE</subject><issn>1051-8223</issn><issn>1558-2515</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpdkNtL9DAQxYsoeH0XfCnChwp2zUySJvFtLesFFla8PIdsO5VKt12T7oP_vVlXPsGnM8P5nWE4SXIMbATAzNXL-LkYIWNqpI0RoLaSPZBSZyhBbseZScg0It9N9kN4ZwyEFnIvmT3NJjeTaToOgRbzlqq06N3wLV21Kofeh_T8aVwUF9fpo6el825o-u4yLv2S_NBQSF1Xrdc3TyEcJju1awMd_ehB8no7eSnus-ns7qEYT7NSgB4yyQWWBp1TXINALRG1KDlDhSZXFTGogWoTH66wmmMVLTZ3NVGuhAGu-UFytrm79P3HisJgF00oqW1dR_0qWK0NV0qIPJKnf8j3fuW7-Jw1gIgiVzJCbAOVvg_BU22Xvlk4_2mB2XW_dt2vXfdrN_3GyL-fuy6Urq2968om_OYMA8U4j9zJhmuI6L8tUGlgOf8CguqACQ</recordid><startdate>20070601</startdate><enddate>20070601</enddate><creator>Goldacker, W.</creator><creator>Frank, A.</creator><creator>Heller, R.</creator><creator>Schlachter, S.I.</creator><creator>Ringsdorf, B.</creator><creator>Weiss, K.-R.</creator><creator>Schmidt, C.</creator><creator>Schuller, S.</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><general>The Institute of Electrical and Electronics Engineers, Inc. (IEEE)</general><scope>97E</scope><scope>RIA</scope><scope>RIE</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope><scope>F28</scope><scope>FR3</scope><scope>H8G</scope><scope>JG9</scope></search><sort><creationdate>20070601</creationdate><title>ROEBEL Assembled Coated Conductors (RACC): Preparation, Properties and Progress</title><author>Goldacker, W. ; Frank, A. ; Heller, R. ; Schlachter, S.I. ; Ringsdorf, B. ; Weiss, K.-R. ; Schmidt, C. ; Schuller, S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c418t-5342c92aa738142852284c30272967de01f1ef9822d2db2dc300bafee67491383</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Applied sciences</topic><topic>Assembling</topic><topic>Assembly</topic><topic>Cables</topic><topic>COATINGS</topic><topic>Coils</topic><topic>Conducting materials</topic><topic>Conductors</topic><topic>COPPER ALLOYS (10 TO 40 CU)</topic><topic>COPPER OXIDE</topic><topic>CURRENT</topic><topic>Current distribution</topic><topic>Electric connection. Cables. Wiring</topic><topic>ELECTRICAL CONDUCTORS</topic><topic>Electrical engineering. Electrical power engineering</topic><topic>Electromagnets</topic><topic>Electronics</topic><topic>Exact sciences and technology</topic><topic>Fusion power generation</topic><topic>Fusion reactors</topic><topic>Geometry</topic><topic>High temperature superconductors</topic><topic>HTS coated conductors</topic><topic>Magnetic materials</topic><topic>Materials</topic><topic>Power cables</topic><topic>R&D</topic><topic>Rare earth elements</topic><topic>Research & development</topic><topic>ROEBEL bar</topic><topic>self field effects</topic><topic>Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices</topic><topic>Strands</topic><topic>Superconducting devices</topic><topic>Superconducting tapes</topic><topic>Superconductivity</topic><topic>SUPERCONDUCTORS</topic><topic>TAPE</topic><topic>Transport</topic><topic>Various equipment and components</topic><topic>YTTRIUM OXIDE</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Goldacker, W.</creatorcontrib><creatorcontrib>Frank, A.</creatorcontrib><creatorcontrib>Heller, R.</creatorcontrib><creatorcontrib>Schlachter, S.I.</creatorcontrib><creatorcontrib>Ringsdorf, B.</creatorcontrib><creatorcontrib>Weiss, K.-R.</creatorcontrib><creatorcontrib>Schmidt, C.</creatorcontrib><creatorcontrib>Schuller, S.</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Copper Technical Reference Library</collection><collection>Materials Research Database</collection><jtitle>IEEE transactions on applied superconductivity</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Goldacker, W.</au><au>Frank, A.</au><au>Heller, R.</au><au>Schlachter, S.I.</au><au>Ringsdorf, B.</au><au>Weiss, K.-R.</au><au>Schmidt, C.</au><au>Schuller, S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>ROEBEL Assembled Coated Conductors (RACC): Preparation, Properties and Progress</atitle><jtitle>IEEE transactions on applied superconductivity</jtitle><stitle>TASC</stitle><date>2007-06-01</date><risdate>2007</risdate><volume>17</volume><issue>2</issue><spage>3398</spage><epage>3401</epage><pages>3398-3401</pages><issn>1051-8223</issn><eissn>1558-2515</eissn><coden>ITASE9</coden><abstract>RBCO (R = Y or rare earth element) coated conductors (CC) are the most promising HTS materials for future high field coils operated at moderately high temperature (40-50 K). Coils are planned for the second generation of fusion reactors (DEMO, "DEMOnstrator") and beyond. A ROEBEL bar concept for a high current (kA-class) low AC loss cable is the most suitable assembling technique for conductors in magnet windings due to the flat rectangular cross section. The presented RACC-cable technique (RACC=ROEBEL assembled coated conductors) works with pre-shaping of tapes into strands with the ROEBEL specific meander geometry. The usually very good bending properties of the CC support the assembling procedure of the RACC-cable. We report on a 16 strand RACC-cable with 19 cm transposition length made from CC material from the commercial supplier SuperPower which reached 1020 A transport critical current at 77 K (J eng = 11.3 kAcm -2 ). The basic properties of the virgin YBCO tapes and the shaped strands like orientation and field dependent transport currents, current homogeneity and bending effects, were investigated and correlated with the measured properties of the RACC-cable. Calculation of the self field effects by means of a model adapted to the specific RACC-cable geometry and in particular taking into account the current distribution in the cable, explained the 30% current reduction in the cable quantitatively.</abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/TASC.2007.899417</doi><tpages>4</tpages></addata></record> |
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| subjects | Applied sciences Assembling Assembly Cables COATINGS Coils Conducting materials Conductors COPPER ALLOYS (10 TO 40 CU) COPPER OXIDE CURRENT Current distribution Electric connection. Cables. Wiring ELECTRICAL CONDUCTORS Electrical engineering. Electrical power engineering Electromagnets Electronics Exact sciences and technology Fusion power generation Fusion reactors Geometry High temperature superconductors HTS coated conductors Magnetic materials Materials Power cables R&D Rare earth elements Research & development ROEBEL bar self field effects Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices Strands Superconducting devices Superconducting tapes Superconductivity SUPERCONDUCTORS TAPE Transport Various equipment and components YTTRIUM OXIDE |
| title | ROEBEL Assembled Coated Conductors (RACC): Preparation, Properties and Progress |
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