Reducing field emission in superconducting RF cavities for the next generation of particle accelerators
Heat treatment up to 1500 degrees C in an ultrahigh-vacuum furnace, along with processing of cavities and temperature mapping was used to suppress field emission and analyze emitter properties. In 27 tests of one-cell 1500-MHz fired accelerating cavities, on the average the accelerating field, E/sub...
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| Veröffentlicht in: | IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) 1991-03, Vol.27 (2), p.1935-1939 |
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| container_end_page | 1939 |
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| container_issue | 2 |
| container_start_page | 1935 |
| container_title | IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) |
| container_volume | 27 |
| creator | Shu, Q.S. Hartung, W. Leibovich, A. Kirchgessner, J. Moffat, D. Noer, R. Padamsee, H. Rubin, D. Sears, J. |
| description | Heat treatment up to 1500 degrees C in an ultrahigh-vacuum furnace, along with processing of cavities and temperature mapping was used to suppress field emission and analyze emitter properties. In 27 tests of one-cell 1500-MHz fired accelerating cavities, on the average the accelerating field, E/sub acc/, increased to 24 MV/m (H/sub pk/=1250 Oe) from 13 MV/m with chemical treatment alone; the highest E/sub acc/ reached was 30.5 MV/m. Emitter properties, efficiency of He processing, and results of the exposure of well-processed RF surfaces to various media are also discussed. |
| doi_str_mv | 10.1109/20.133581 |
| format | Article |
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In 27 tests of one-cell 1500-MHz fired accelerating cavities, on the average the accelerating field, E/sub acc/, increased to 24 MV/m (H/sub pk/=1250 Oe) from 13 MV/m with chemical treatment alone; the highest E/sub acc/ reached was 30.5 MV/m. Emitter properties, efficiency of He processing, and results of the exposure of well-processed RF surfaces to various media are also discussed.</description><identifier>ISSN: 0018-9464</identifier><identifier>EISSN: 1941-0069</identifier><identifier>DOI: 10.1109/20.133581</identifier><identifier>CODEN: IEMGAQ</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>430300 -- Particle Accelerators-- Auxiliaries & Components ; Acceleration ; ACCELERATORS ; Applied sciences ; CAVITY RESONATORS ; Chemicals ; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ; Electric breakdown ; ELECTRONIC EQUIPMENT ; Electronics ; ELEMENTS ; EMISSION ; Exact sciences and technology ; FIELD EMISSION ; FLUIDS ; GASES ; HEAT TREATMENTS ; HELIUM ; History ; Iron ; Life estimation ; Linear particle accelerator ; Niobium ; NONMETALS ; PARTICLE ACCELERATORS ; Radio frequency ; RARE GASES ; RESONATORS ; RF SYSTEMS ; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices ; SUPERCONDUCTING CAVITY RESONATORS ; Superconducting devices ; SUPERCONDUCTING DEVICES 665412 -- Superconducting Devices-- (1992-) ; TEMPERATURE MEASUREMENT ; Testing</subject><ispartof>IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States), 1991-03, Vol.27 (2), p.1935-1939</ispartof><rights>1991 INIST-CNRS</rights><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c325t-83a817ba442bd16ba05e183b241b9880572199bf4faef7a5a712f7d4bf1430363</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/133581$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>230,309,310,314,777,781,786,787,793,882,23911,23912,25121,27905,27906,54739</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/133581$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=19586951$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/6093367$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Shu, Q.S.</creatorcontrib><creatorcontrib>Hartung, W.</creatorcontrib><creatorcontrib>Leibovich, A.</creatorcontrib><creatorcontrib>Kirchgessner, J.</creatorcontrib><creatorcontrib>Moffat, D.</creatorcontrib><creatorcontrib>Noer, R.</creatorcontrib><creatorcontrib>Padamsee, H.</creatorcontrib><creatorcontrib>Rubin, D.</creatorcontrib><creatorcontrib>Sears, J.</creatorcontrib><title>Reducing field emission in superconducting RF cavities for the next generation of particle accelerators</title><title>IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)</title><addtitle>TMAG</addtitle><description>Heat treatment up to 1500 degrees C in an ultrahigh-vacuum furnace, along with processing of cavities and temperature mapping was used to suppress field emission and analyze emitter properties. In 27 tests of one-cell 1500-MHz fired accelerating cavities, on the average the accelerating field, E/sub acc/, increased to 24 MV/m (H/sub pk/=1250 Oe) from 13 MV/m with chemical treatment alone; the highest E/sub acc/ reached was 30.5 MV/m. Emitter properties, efficiency of He processing, and results of the exposure of well-processed RF surfaces to various media are also discussed.</description><subject>430300 -- Particle Accelerators-- Auxiliaries & Components</subject><subject>Acceleration</subject><subject>ACCELERATORS</subject><subject>Applied sciences</subject><subject>CAVITY RESONATORS</subject><subject>Chemicals</subject><subject>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</subject><subject>Electric breakdown</subject><subject>ELECTRONIC EQUIPMENT</subject><subject>Electronics</subject><subject>ELEMENTS</subject><subject>EMISSION</subject><subject>Exact sciences and technology</subject><subject>FIELD EMISSION</subject><subject>FLUIDS</subject><subject>GASES</subject><subject>HEAT TREATMENTS</subject><subject>HELIUM</subject><subject>History</subject><subject>Iron</subject><subject>Life estimation</subject><subject>Linear particle accelerator</subject><subject>Niobium</subject><subject>NONMETALS</subject><subject>PARTICLE ACCELERATORS</subject><subject>Radio frequency</subject><subject>RARE GASES</subject><subject>RESONATORS</subject><subject>RF SYSTEMS</subject><subject>Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices</subject><subject>SUPERCONDUCTING CAVITY RESONATORS</subject><subject>Superconducting devices</subject><subject>SUPERCONDUCTING DEVICES 665412 -- Superconducting Devices-- (1992-)</subject><subject>TEMPERATURE MEASUREMENT</subject><subject>Testing</subject><issn>0018-9464</issn><issn>1941-0069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1991</creationdate><recordtype>article</recordtype><recordid>eNqN0c9LHDEUB_BQKnS79tCrpyC04GE0P2eSY5H6A4SC6HnIZF92I7PJmmSL_vdmnAWvnr6E93mPPB5CPyk5p5ToC1aTc6noF7SgWtCGkFZ_RQtCqGq0aMU39D3np_oUkpIFWt_Dam99WGPnYVxh2PqcfQzYB5z3O0g2hgrKJO6vsDX_ffGQsYsJlw3gAC8FryFAMmVqiw7vTCrejoCNtTBOhZjyMTpyZszw45BL9Hj19-Hyprn7d317-eeusZzJ0ihuFO0GIwQbVrQdDJFAFR-YoINWisiOUa0HJ5wB1xlpOspctxKDo4IT3vIlOp3nxlx8n60vYDd1hwC29C3RnLddRb9ntEvxeQ-59HXr-tfRBIj73DNNWMvkJ6CSXHGmKjyboU0x5wSu3yW_Nem1p6SfDtOzmu-HqfbXYajJ1owumWB9_mjQUrVaTu5kdh4APsrzkDdkwpUU</recordid><startdate>19910301</startdate><enddate>19910301</enddate><creator>Shu, Q.S.</creator><creator>Hartung, W.</creator><creator>Leibovich, A.</creator><creator>Kirchgessner, J.</creator><creator>Moffat, D.</creator><creator>Noer, R.</creator><creator>Padamsee, H.</creator><creator>Rubin, D.</creator><creator>Sears, J.</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>8FD</scope><scope>L7M</scope><scope>7U5</scope><scope>OTOTI</scope></search><sort><creationdate>19910301</creationdate><title>Reducing field emission in superconducting RF cavities for the next generation of particle accelerators</title><author>Shu, Q.S. ; Hartung, W. ; Leibovich, A. ; Kirchgessner, J. ; Moffat, D. ; Noer, R. ; Padamsee, H. ; Rubin, D. ; Sears, J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c325t-83a817ba442bd16ba05e183b241b9880572199bf4faef7a5a712f7d4bf1430363</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1991</creationdate><topic>430300 -- Particle Accelerators-- Auxiliaries & Components</topic><topic>Acceleration</topic><topic>ACCELERATORS</topic><topic>Applied sciences</topic><topic>CAVITY RESONATORS</topic><topic>Chemicals</topic><topic>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</topic><topic>Electric breakdown</topic><topic>ELECTRONIC EQUIPMENT</topic><topic>Electronics</topic><topic>ELEMENTS</topic><topic>EMISSION</topic><topic>Exact sciences and technology</topic><topic>FIELD EMISSION</topic><topic>FLUIDS</topic><topic>GASES</topic><topic>HEAT TREATMENTS</topic><topic>HELIUM</topic><topic>History</topic><topic>Iron</topic><topic>Life estimation</topic><topic>Linear particle accelerator</topic><topic>Niobium</topic><topic>NONMETALS</topic><topic>PARTICLE ACCELERATORS</topic><topic>Radio frequency</topic><topic>RARE GASES</topic><topic>RESONATORS</topic><topic>RF SYSTEMS</topic><topic>Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices</topic><topic>SUPERCONDUCTING CAVITY RESONATORS</topic><topic>Superconducting devices</topic><topic>SUPERCONDUCTING DEVICES 665412 -- Superconducting Devices-- (1992-)</topic><topic>TEMPERATURE MEASUREMENT</topic><topic>Testing</topic><toplevel>online_resources</toplevel><creatorcontrib>Shu, Q.S.</creatorcontrib><creatorcontrib>Hartung, W.</creatorcontrib><creatorcontrib>Leibovich, A.</creatorcontrib><creatorcontrib>Kirchgessner, J.</creatorcontrib><creatorcontrib>Moffat, D.</creatorcontrib><creatorcontrib>Noer, R.</creatorcontrib><creatorcontrib>Padamsee, H.</creatorcontrib><creatorcontrib>Rubin, D.</creatorcontrib><creatorcontrib>Sears, J.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>OSTI.GOV</collection><jtitle>IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Shu, Q.S.</au><au>Hartung, W.</au><au>Leibovich, A.</au><au>Kirchgessner, J.</au><au>Moffat, D.</au><au>Noer, R.</au><au>Padamsee, H.</au><au>Rubin, D.</au><au>Sears, J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Reducing field emission in superconducting RF cavities for the next generation of particle accelerators</atitle><jtitle>IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)</jtitle><stitle>TMAG</stitle><date>1991-03-01</date><risdate>1991</risdate><volume>27</volume><issue>2</issue><spage>1935</spage><epage>1939</epage><pages>1935-1939</pages><issn>0018-9464</issn><eissn>1941-0069</eissn><coden>IEMGAQ</coden><abstract>Heat treatment up to 1500 degrees C in an ultrahigh-vacuum furnace, along with processing of cavities and temperature mapping was used to suppress field emission and analyze emitter properties. In 27 tests of one-cell 1500-MHz fired accelerating cavities, on the average the accelerating field, E/sub acc/, increased to 24 MV/m (H/sub pk/=1250 Oe) from 13 MV/m with chemical treatment alone; the highest E/sub acc/ reached was 30.5 MV/m. Emitter properties, efficiency of He processing, and results of the exposure of well-processed RF surfaces to various media are also discussed.</abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/20.133581</doi><tpages>5</tpages></addata></record> |
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| identifier | ISSN: 0018-9464 |
| ispartof | IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States), 1991-03, Vol.27 (2), p.1935-1939 |
| issn | 0018-9464 1941-0069 |
| language | eng |
| recordid | cdi_osti_scitechconnect_6093367 |
| source | IEEE Electronic Library (IEL) |
| subjects | 430300 -- Particle Accelerators-- Auxiliaries & Components Acceleration ACCELERATORS Applied sciences CAVITY RESONATORS Chemicals CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY Electric breakdown ELECTRONIC EQUIPMENT Electronics ELEMENTS EMISSION Exact sciences and technology FIELD EMISSION FLUIDS GASES HEAT TREATMENTS HELIUM History Iron Life estimation Linear particle accelerator Niobium NONMETALS PARTICLE ACCELERATORS Radio frequency RARE GASES RESONATORS RF SYSTEMS Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices SUPERCONDUCTING CAVITY RESONATORS Superconducting devices SUPERCONDUCTING DEVICES 665412 -- Superconducting Devices-- (1992-) TEMPERATURE MEASUREMENT Testing |
| title | Reducing field emission in superconducting RF cavities for the next generation of particle accelerators |
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