High Intensity Beam Instabilities in the Brookhaven AGS
Transverse resistive wall instabilities and longitudinal reactive wall instabilities have both been observed in the Brookhaven AGS. Recently an instability has been observed characterized by individual coherent phase oscillations of the twelve beam bunches. This instability is believed to be caused...
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| Veröffentlicht in: | IEEE (Inst. Elec. Electron. Eng.), Trans. Nucl. Sci. NS-18: No. 3, 1032-4(Jun 1971) Trans. Nucl. Sci. NS-18: No. 3, 1032-4(Jun 1971), 1971-01, Vol.18 (3), p.1032-1034 |
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| container_title | IEEE (Inst. Elec. Electron. Eng.), Trans. Nucl. Sci. NS-18: No. 3, 1032-4(Jun 1971) |
| container_volume | 18 |
| creator | Barton, M. Q. Raka, E. C. |
| description | Transverse resistive wall instabilities and longitudinal reactive wall instabilities have both been observed in the Brookhaven AGS. Recently an instability has been observed characterized by individual coherent phase oscillations of the twelve beam bunches. This instability is believed to be caused by high frequency resonance modes in the rf cavities introduced by recent modifications. A simple analysis shows that voltages induced in these parasitic resonances by the beam can couple the phase oscillations of the individual bunches. A normal mode analysis of the system predicts unstable normal modes with properties similar to the observations. Modifications to the rf cavities to suppress these undesirable effects have been devised. |
| doi_str_mv | 10.1109/TNS.1971.4326271 |
| format | Article |
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Q. ; Raka, E. C.</creator><creatorcontrib>Barton, M. Q. ; Raka, E. C. ; Brookhaven National Lab., Upton, N. Y</creatorcontrib><description>Transverse resistive wall instabilities and longitudinal reactive wall instabilities have both been observed in the Brookhaven AGS. Recently an instability has been observed characterized by individual coherent phase oscillations of the twelve beam bunches. This instability is believed to be caused by high frequency resonance modes in the rf cavities introduced by recent modifications. A simple analysis shows that voltages induced in these parasitic resonances by the beam can couple the phase oscillations of the individual bunches. A normal mode analysis of the system predicts unstable normal modes with properties similar to the observations. Modifications to the rf cavities to suppress these undesirable effects have been devised.</description><identifier>ISSN: 0018-9499</identifier><identifier>EISSN: 1558-1578</identifier><identifier>DOI: 10.1109/TNS.1971.4326271</identifier><identifier>CODEN: IETNAE</identifier><language>eng</language><publisher>IEEE</publisher><subject>Acceleration ; BEAMS ; BROOKHAVEN AGS ; BROOKHAVEN ALTERNATING-GRADIENT SYNCHROTRON (AGS)/beam instabilities in, high-intensity ; Electrodes ; Laboratories ; N34640 -Particle Accelerators-Ion Optics & Field Calculations ; Optical coupling ; Power amplifiers ; Protons ; Radiofrequency amplifiers ; Resonance ; Resonant frequency ; STABILITY ; Voltage</subject><ispartof>IEEE (Inst. Elec. Electron. Eng.), Trans. Nucl. Sci. 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Y</creatorcontrib><title>High Intensity Beam Instabilities in the Brookhaven AGS</title><title>IEEE (Inst. Elec. Electron. Eng.), Trans. Nucl. Sci. NS-18: No. 3, 1032-4(Jun 1971)</title><addtitle>TNS</addtitle><description>Transverse resistive wall instabilities and longitudinal reactive wall instabilities have both been observed in the Brookhaven AGS. Recently an instability has been observed characterized by individual coherent phase oscillations of the twelve beam bunches. This instability is believed to be caused by high frequency resonance modes in the rf cavities introduced by recent modifications. A simple analysis shows that voltages induced in these parasitic resonances by the beam can couple the phase oscillations of the individual bunches. A normal mode analysis of the system predicts unstable normal modes with properties similar to the observations. Modifications to the rf cavities to suppress these undesirable effects have been devised.</description><subject>Acceleration</subject><subject>BEAMS</subject><subject>BROOKHAVEN AGS</subject><subject>BROOKHAVEN ALTERNATING-GRADIENT SYNCHROTRON (AGS)/beam instabilities in, high-intensity</subject><subject>Electrodes</subject><subject>Laboratories</subject><subject>N34640 -Particle Accelerators-Ion Optics & Field Calculations</subject><subject>Optical coupling</subject><subject>Power amplifiers</subject><subject>Protons</subject><subject>Radiofrequency amplifiers</subject><subject>Resonance</subject><subject>Resonant frequency</subject><subject>STABILITY</subject><subject>Voltage</subject><issn>0018-9499</issn><issn>1558-1578</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1971</creationdate><recordtype>article</recordtype><recordid>eNo9kE1LAzEQhoMoWKt3wcvifddMPtzk2BZtC0UPreeQzc660XZXNkHov29Kq6fhZZ53Bh5C7oEWAFQ_bd7WBegSCsHZMyvhgoxASpWDLNUlGVEKKtdC62tyE8JXikJSOSLlwn-22bKL2AUf99kU7S7FEG3ltz56DJnvsthiNh36_ru1v9hlk_n6llw1dhvw7jzH5OP1ZTNb5Kv3-XI2WeWOaRpzViHj1lmVnoFmNXBVW1XVrOS8ERQgRaAOUWqNaAWXokaupasQKdiaj8nj6W4fojfB-YiudX3XoYtGlFQqzhJET5Ab-hAGbMzP4Hd22Bug5mjHJDvmaMec7aTKw6niEfEf_9seAPfhX28</recordid><startdate>19710101</startdate><enddate>19710101</enddate><creator>Barton, M. Q.</creator><creator>Raka, E. C.</creator><general>IEEE</general><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>19710101</creationdate><title>High Intensity Beam Instabilities in the Brookhaven AGS</title><author>Barton, M. Q. ; Raka, E. C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c290t-2be23aca8505192d138da8bd2733f40118da10cee599eea4354de395cbee01ad3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1971</creationdate><topic>Acceleration</topic><topic>BEAMS</topic><topic>BROOKHAVEN AGS</topic><topic>BROOKHAVEN ALTERNATING-GRADIENT SYNCHROTRON (AGS)/beam instabilities in, high-intensity</topic><topic>Electrodes</topic><topic>Laboratories</topic><topic>N34640 -Particle Accelerators-Ion Optics & Field Calculations</topic><topic>Optical coupling</topic><topic>Power amplifiers</topic><topic>Protons</topic><topic>Radiofrequency amplifiers</topic><topic>Resonance</topic><topic>Resonant frequency</topic><topic>STABILITY</topic><topic>Voltage</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Barton, M. Q.</creatorcontrib><creatorcontrib>Raka, E. C.</creatorcontrib><creatorcontrib>Brookhaven National Lab., Upton, N. Y</creatorcontrib><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>IEEE (Inst. Elec. Electron. Eng.), Trans. Nucl. Sci. NS-18: No. 3, 1032-4(Jun 1971)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Barton, M. Q.</au><au>Raka, E. C.</au><aucorp>Brookhaven National Lab., Upton, N. Y</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>High Intensity Beam Instabilities in the Brookhaven AGS</atitle><jtitle>IEEE (Inst. Elec. Electron. Eng.), Trans. Nucl. Sci. NS-18: No. 3, 1032-4(Jun 1971)</jtitle><stitle>TNS</stitle><date>1971-01-01</date><risdate>1971</risdate><volume>18</volume><issue>3</issue><spage>1032</spage><epage>1034</epage><pages>1032-1034</pages><issn>0018-9499</issn><eissn>1558-1578</eissn><coden>IETNAE</coden><abstract>Transverse resistive wall instabilities and longitudinal reactive wall instabilities have both been observed in the Brookhaven AGS. Recently an instability has been observed characterized by individual coherent phase oscillations of the twelve beam bunches. This instability is believed to be caused by high frequency resonance modes in the rf cavities introduced by recent modifications. A simple analysis shows that voltages induced in these parasitic resonances by the beam can couple the phase oscillations of the individual bunches. A normal mode analysis of the system predicts unstable normal modes with properties similar to the observations. Modifications to the rf cavities to suppress these undesirable effects have been devised.</abstract><pub>IEEE</pub><doi>10.1109/TNS.1971.4326271</doi><tpages>3</tpages></addata></record> |
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| identifier | ISSN: 0018-9499 |
| ispartof | IEEE (Inst. Elec. Electron. Eng.), Trans. Nucl. Sci. NS-18: No. 3, 1032-4(Jun 1971), 1971-01, Vol.18 (3), p.1032-1034 |
| issn | 0018-9499 1558-1578 |
| language | eng |
| recordid | cdi_crossref_primary_10_1109_TNS_1971_4326271 |
| source | IEEE Electronic Library (IEL) |
| subjects | Acceleration BEAMS BROOKHAVEN AGS BROOKHAVEN ALTERNATING-GRADIENT SYNCHROTRON (AGS)/beam instabilities in, high-intensity Electrodes Laboratories N34640 -Particle Accelerators-Ion Optics & Field Calculations Optical coupling Power amplifiers Protons Radiofrequency amplifiers Resonance Resonant frequency STABILITY Voltage |
| title | High Intensity Beam Instabilities in the Brookhaven AGS |
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