Multipass steering protocols at Jefferson lab
The CEBAF recirculating accelerator consists of two CW superconducting RF linacs, through which an electron beam is accelerated for up to 5 passes. Focusing and steering elements affect each pass differently, requiring a multipass steering protocol to correct the orbits. Perturbations include lens m...
| Main Authors: | , |
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| Format: | Conference item |
| Language: | English |
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IEEE
2008
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| _version_ | 1826316991064965120 |
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| author | Bodenstein, RM Tiefenback, MG |
| author_facet | Bodenstein, RM Tiefenback, MG |
| author_sort | Bodenstein, RM |
| collection | OXFORD |
| description | The CEBAF recirculating accelerator consists of two CW superconducting RF linacs, through which an electron beam is accelerated for up to 5 passes. Focusing and steering elements affect each pass differently, requiring a multipass steering protocol to correct the orbits. Perturbations include lens misalignments (including long-term ground motion), BPM offsets, and focusing and steering from RF fields inside the cavities. A previous treatment of this problem assumed all perturbations were localized at the quadrupoles and the absence of x-y coupling. Having analyzed the problem and characterized the solutions, we developed an empirical iterative protocol to compare against previous results in the presence of skew fields and cross-plane coupling. We plan to characterize static and acceleration- dependent components of the beam line perturbations to allow systematic and rapid configuration of the accelerator at different linac energy gains. |
| first_indexed | 2024-03-06T23:06:58Z |
| format | Conference item |
| id | oxford-uuid:642b5645-c5ff-4f98-a866-dfcea75ed6ba |
| institution | University of Oxford |
| language | English |
| last_indexed | 2025-02-19T04:33:06Z |
| publishDate | 2008 |
| publisher | IEEE |
| record_format | dspace |
| spelling | oxford-uuid:642b5645-c5ff-4f98-a866-dfcea75ed6ba2025-01-15T09:29:41ZMultipass steering protocols at Jefferson labConference itemhttp://purl.org/coar/resource_type/c_5794uuid:642b5645-c5ff-4f98-a866-dfcea75ed6baEnglishSymplectic Elements at OxfordIEEE2008Bodenstein, RMTiefenback, MGThe CEBAF recirculating accelerator consists of two CW superconducting RF linacs, through which an electron beam is accelerated for up to 5 passes. Focusing and steering elements affect each pass differently, requiring a multipass steering protocol to correct the orbits. Perturbations include lens misalignments (including long-term ground motion), BPM offsets, and focusing and steering from RF fields inside the cavities. A previous treatment of this problem assumed all perturbations were localized at the quadrupoles and the absence of x-y coupling. Having analyzed the problem and characterized the solutions, we developed an empirical iterative protocol to compare against previous results in the presence of skew fields and cross-plane coupling. We plan to characterize static and acceleration- dependent components of the beam line perturbations to allow systematic and rapid configuration of the accelerator at different linac energy gains. |
| spellingShingle | Bodenstein, RM Tiefenback, MG Multipass steering protocols at Jefferson lab |
| title | Multipass steering protocols at Jefferson lab |
| title_full | Multipass steering protocols at Jefferson lab |
| title_fullStr | Multipass steering protocols at Jefferson lab |
| title_full_unstemmed | Multipass steering protocols at Jefferson lab |
| title_short | Multipass steering protocols at Jefferson lab |
| title_sort | multipass steering protocols at jefferson lab |
| work_keys_str_mv | AT bodensteinrm multipasssteeringprotocolsatjeffersonlab AT tiefenbackmg multipasssteeringprotocolsatjeffersonlab |