Development of digital feedback systems for beam position and energy at the Thomas Jefferson National Accelerator Facility
The development of beam-based digital feedback systems for the CEBAF accelerator has gone through several stages. As the accelerator moved from commissioning to operation for the nuclear physics program, the top priority was to stabilize the beam against slow energy and position drifts (
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| creator | Karn, J. Chowdhary, M. Hutton, A. Lebedev, V. Legg, R. Letta, P. Shoaee, H. Watson, W. van Zeijts, J. |
| description | The development of beam-based digital feedback systems for the CEBAF accelerator has gone through several stages. As the accelerator moved from commissioning to operation for the nuclear physics program, the top priority was to stabilize the beam against slow energy and position drifts ( |
| doi_str_mv | 10.1109/PAC.1997.751216 |
| format | Conference Proceeding |
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As the accelerator moved from commissioning to operation for the nuclear physics program, the top priority was to stabilize the beam against slow energy and position drifts (<1 Hz). These slow drifts were corrected using the existing accelerator monitors and actuators driven by software running on top of the EPICS control system. With slow drifts corrected, attention turned to quantifying the higher frequency disturbances on the beam and to designing the required feedback systems needed to achieve the CEBAF design stability requirements. Results from measurements showed the major components in position and energy to be at harmonics of the power line frequencies of 60, 120, and 180 Hz. Hardware and software was installed in two locations of the accelerator as prototypes for the faster feedback systems needed. This paper gives an overview of the measured beam disturbances and the feedback systems developed.</description><identifier>ISBN: 9780780343764</identifier><identifier>ISBN: 078034376X</identifier><identifier>DOI: 10.1109/PAC.1997.751216</identifier><language>eng</language><publisher>IEEE</publisher><subject>Actuators ; Control systems ; Energy measurement ; Feedback ; Frequency measurement ; Nuclear physics ; Particle beams ; Position measurement ; Power measurement ; Stability</subject><ispartof>Proceedings of the 1997 Particle Accelerator Conference (Cat. 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This paper gives an overview of the measured beam disturbances and the feedback systems developed.</description><subject>Actuators</subject><subject>Control systems</subject><subject>Energy measurement</subject><subject>Feedback</subject><subject>Frequency measurement</subject><subject>Nuclear physics</subject><subject>Particle beams</subject><subject>Position measurement</subject><subject>Power measurement</subject><subject>Stability</subject><isbn>9780780343764</isbn><isbn>078034376X</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>1997</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNotkE1LAzEYhAMiKLVnwVP-wNZkNx-b41KtHxT10Ht5k7xpo_tRNkFYf70rdRiYy_DADCG3nK04Z-b-o1mvuDF6pSUvubogS6NrNrsSlVbiiixT-mSzpKyV4tfk5wG_sR1OHfaZDoH6eIgZWhoQvQX3RdOUMnaJhmGkFqGjpyHFHIeeQu8p9jgeJgqZ5iPS3XHoINFXDAHHNFfe4K854xrnsMUR8kzZgIttzNMNuQzQJlz-54LsNo-79XOxfX96WTfbIiqmCi0CcCWZQF1KCN5aI2oRdKlkLZk3QtRB-dKZeaZXlrNSoXbOVpZZaz1UC3J3xkZE3J_G2ME47c__VL8a9Fzx</recordid><startdate>1997</startdate><enddate>1997</enddate><creator>Karn, J.</creator><creator>Chowdhary, M.</creator><creator>Hutton, A.</creator><creator>Lebedev, V.</creator><creator>Legg, R.</creator><creator>Letta, P.</creator><creator>Shoaee, H.</creator><creator>Watson, W.</creator><creator>van Zeijts, J.</creator><general>IEEE</general><scope>6IE</scope><scope>6IL</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIL</scope></search><sort><creationdate>1997</creationdate><title>Development of digital feedback systems for beam position and energy at the Thomas Jefferson National Accelerator Facility</title><author>Karn, J. ; Chowdhary, M. ; Hutton, A. ; Lebedev, V. ; Legg, R. ; Letta, P. ; Shoaee, H. ; Watson, W. ; van Zeijts, J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i606-74fa16504e725afdbb9484f7265850d9448f6d2c9807d6b1026e7ccb3b0bbbda3</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>1997</creationdate><topic>Actuators</topic><topic>Control systems</topic><topic>Energy measurement</topic><topic>Feedback</topic><topic>Frequency measurement</topic><topic>Nuclear physics</topic><topic>Particle beams</topic><topic>Position measurement</topic><topic>Power measurement</topic><topic>Stability</topic><toplevel>online_resources</toplevel><creatorcontrib>Karn, J.</creatorcontrib><creatorcontrib>Chowdhary, M.</creatorcontrib><creatorcontrib>Hutton, A.</creatorcontrib><creatorcontrib>Lebedev, V.</creatorcontrib><creatorcontrib>Legg, R.</creatorcontrib><creatorcontrib>Letta, P.</creatorcontrib><creatorcontrib>Shoaee, H.</creatorcontrib><creatorcontrib>Watson, W.</creatorcontrib><creatorcontrib>van Zeijts, J.</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan All Online (POP All Online) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP All) 1998-Present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Karn, J.</au><au>Chowdhary, M.</au><au>Hutton, A.</au><au>Lebedev, V.</au><au>Legg, R.</au><au>Letta, P.</au><au>Shoaee, H.</au><au>Watson, W.</au><au>van Zeijts, J.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Development of digital feedback systems for beam position and energy at the Thomas Jefferson National Accelerator Facility</atitle><btitle>Proceedings of the 1997 Particle Accelerator Conference (Cat. No.97CH36167)</btitle><stitle>PAC</stitle><date>1997</date><risdate>1997</risdate><volume>2</volume><spage>2383</spage><epage>2385 vol.2</epage><pages>2383-2385 vol.2</pages><isbn>9780780343764</isbn><isbn>078034376X</isbn><abstract>The development of beam-based digital feedback systems for the CEBAF accelerator has gone through several stages. As the accelerator moved from commissioning to operation for the nuclear physics program, the top priority was to stabilize the beam against slow energy and position drifts (<1 Hz). These slow drifts were corrected using the existing accelerator monitors and actuators driven by software running on top of the EPICS control system. With slow drifts corrected, attention turned to quantifying the higher frequency disturbances on the beam and to designing the required feedback systems needed to achieve the CEBAF design stability requirements. Results from measurements showed the major components in position and energy to be at harmonics of the power line frequencies of 60, 120, and 180 Hz. Hardware and software was installed in two locations of the accelerator as prototypes for the faster feedback systems needed. This paper gives an overview of the measured beam disturbances and the feedback systems developed.</abstract><pub>IEEE</pub><doi>10.1109/PAC.1997.751216</doi><oa>free_for_read</oa></addata></record> |
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| identifier | ISBN: 9780780343764 |
| ispartof | Proceedings of the 1997 Particle Accelerator Conference (Cat. No.97CH36167), 1997, Vol.2, p.2383-2385 vol.2 |
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| language | eng |
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| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Actuators Control systems Energy measurement Feedback Frequency measurement Nuclear physics Particle beams Position measurement Power measurement Stability |
| title | Development of digital feedback systems for beam position and energy at the Thomas Jefferson National Accelerator Facility |
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