Physical Insights and Test Stand Results for the LANSCE H- Surface Converter Source
The Los Alamos Neutron Science Center (LANSCE) H- surface converter source upgrade project has been ongoing for several years to reach 25-40 mA current with 7(cm-mrad) lab emittance (95% beam fraction). The duty factor is 12% (120 Hz, 1ms pulse length). Summary test stand results and interpretations...
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| creator | Sherman, Joseph Chacon-Golcher, Edwin Geros, Ernest G Jacobson, Edward Lara, Patrick Meyer, Bruce J Naffziger, Peter Rouleau, Gary Schaller, Stuart C Stevens Jr, Ralph R Zaugg, Thomas |
| description | The Los Alamos Neutron Science Center (LANSCE) H- surface converter source upgrade project has been ongoing for several years to reach 25-40 mA current with 7(cm-mrad) lab emittance (95% beam fraction). The duty factor is 12% (120 Hz, 1ms pulse length). Summary test stand results and interpretations for a six filament axial extraction H- source are presented. This source did produce 40-mA H- current, but with unacceptable emittance growth. More recently a fourth modified LANSCE H- production source with radial H- extraction system has been constructed, and is presently undergoing tests. Currents up to 25mA H- have been observed with 20% emittance growth. This emittance growth may be acceptable for 800 MeV linac operations. A summary of physical principles of emittance growth mechanisms and converter physics are given. |
| doi_str_mv | 10.1063/1.1908301 |
| format | Conference Proceeding |
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The duty factor is 12% (120 Hz, 1ms pulse length). Summary test stand results and interpretations for a six filament axial extraction H- source are presented. This source did produce 40-mA H- current, but with unacceptable emittance growth. More recently a fourth modified LANSCE H- production source with radial H- extraction system has been constructed, and is presently undergoing tests. Currents up to 25mA H- have been observed with 20% emittance growth. This emittance growth may be acceptable for 800 MeV linac operations. A summary of physical principles of emittance growth mechanisms and converter physics are given.</description><subject>ANIONS</subject><subject>ATOMIC AND MOLECULAR PHYSICS</subject><subject>BRIGHTNESS</subject><subject>CURRENTS</subject><subject>EXTRACTION</subject><subject>HYDROGEN IONS</subject><subject>ION SOURCES</subject><subject>LINEAR ACCELERATORS</subject><subject>LOS ALAMOS</subject><subject>MEV RANGE</subject><subject>NEUTRONS</subject><issn>0094-243X</issn><issn>1551-7616</issn><isbn>0735402485</isbn><isbn>9780735402485</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2005</creationdate><recordtype>conference_proceeding</recordtype><recordid>eNotkE1Lw0AYhBc_wLZ68B8sCN5S3_3K7h5LqFooKqaCt7DZvLGRmGh2I_jvjdTTDMMwMA8hlwyWDFJxw5bMghHAjsiMKcUSnbL0mMxBCyWBS6NOyAzAyoRL8XpG5iG8A3CrtZmR_Gn_ExrvWrrpQvO2j4G6rqI7DJHm8c8-YxjbKa77gcY90u3qIc_W9D6h-TjUziPN-u4bh4gDzftx8HhOTmvXBrz41wV5uV3vsvtk-3i3yVbbxHNjY2JTrypdOcWchpqnFXhWYpkyUaOpnHXe1Vo6zktXl2mphPYgGYBEbZRzXizI1WG3D7Epgm8i-r3vuw59LPiEBszEZUGuD63Pof8ap1_FRxM8tq3rsB9Dwa20xgITv_9NX8o</recordid><startdate>20050406</startdate><enddate>20050406</enddate><creator>Sherman, Joseph</creator><creator>Chacon-Golcher, Edwin</creator><creator>Geros, Ernest G</creator><creator>Jacobson, Edward</creator><creator>Lara, Patrick</creator><creator>Meyer, Bruce J</creator><creator>Naffziger, Peter</creator><creator>Rouleau, Gary</creator><creator>Schaller, Stuart C</creator><creator>Stevens Jr, Ralph R</creator><creator>Zaugg, Thomas</creator><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope><scope>OTOTI</scope></search><sort><creationdate>20050406</creationdate><title>Physical Insights and Test Stand Results for the LANSCE H- Surface Converter Source</title><author>Sherman, Joseph ; Chacon-Golcher, Edwin ; Geros, Ernest G ; Jacobson, Edward ; Lara, Patrick ; Meyer, Bruce J ; Naffziger, Peter ; Rouleau, Gary ; Schaller, Stuart C ; Stevens Jr, Ralph R ; Zaugg, Thomas</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c289t-96c5d7da51a70f26d0c1beb613fe8da9acaf74a22bafb6b537c041004e785aac3</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2005</creationdate><topic>ANIONS</topic><topic>ATOMIC AND MOLECULAR PHYSICS</topic><topic>BRIGHTNESS</topic><topic>CURRENTS</topic><topic>EXTRACTION</topic><topic>HYDROGEN IONS</topic><topic>ION SOURCES</topic><topic>LINEAR ACCELERATORS</topic><topic>LOS ALAMOS</topic><topic>MEV RANGE</topic><topic>NEUTRONS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sherman, Joseph</creatorcontrib><creatorcontrib>Chacon-Golcher, Edwin</creatorcontrib><creatorcontrib>Geros, Ernest G</creatorcontrib><creatorcontrib>Jacobson, Edward</creatorcontrib><creatorcontrib>Lara, Patrick</creatorcontrib><creatorcontrib>Meyer, Bruce J</creatorcontrib><creatorcontrib>Naffziger, Peter</creatorcontrib><creatorcontrib>Rouleau, Gary</creatorcontrib><creatorcontrib>Schaller, Stuart C</creatorcontrib><creatorcontrib>Stevens Jr, Ralph R</creatorcontrib><creatorcontrib>Zaugg, Thomas</creatorcontrib><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sherman, Joseph</au><au>Chacon-Golcher, Edwin</au><au>Geros, Ernest G</au><au>Jacobson, Edward</au><au>Lara, Patrick</au><au>Meyer, Bruce J</au><au>Naffziger, Peter</au><au>Rouleau, Gary</au><au>Schaller, Stuart C</au><au>Stevens Jr, Ralph R</au><au>Zaugg, Thomas</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Physical Insights and Test Stand Results for the LANSCE H- Surface Converter Source</atitle><btitle>AIP conference proceedings</btitle><date>2005-04-06</date><risdate>2005</risdate><volume>763</volume><issue>1</issue><spage>254</spage><epage>266</epage><pages>254-266</pages><issn>0094-243X</issn><eissn>1551-7616</eissn><isbn>0735402485</isbn><isbn>9780735402485</isbn><abstract>The Los Alamos Neutron Science Center (LANSCE) H- surface converter source upgrade project has been ongoing for several years to reach 25-40 mA current with 7(cm-mrad) lab emittance (95% beam fraction). 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| fulltext | fulltext |
| identifier | ISSN: 0094-243X |
| ispartof | AIP conference proceedings, 2005, Vol.763 (1), p.254-266 |
| issn | 0094-243X 1551-7616 |
| language | eng |
| recordid | cdi_osti_scitechconnect_20630808 |
| source | AIP Journals Complete |
| subjects | ANIONS ATOMIC AND MOLECULAR PHYSICS BRIGHTNESS CURRENTS EXTRACTION HYDROGEN IONS ION SOURCES LINEAR ACCELERATORS LOS ALAMOS MEV RANGE NEUTRONS |
| title | Physical Insights and Test Stand Results for the LANSCE H- Surface Converter Source |
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