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...
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| Format: | Conference item |
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Institute of Electrical and Electronics Engineers
2008
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| _version_ | 1797072379739897856 |
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| author | Bodenstein, R Tiefenback, MG |
| author_facet | Bodenstein, R Tiefenback, MG |
| author_sort | Bodenstein, R |
| 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 |
| last_indexed | 2024-03-06T23:06:58Z |
| publishDate | 2008 |
| publisher | Institute of Electrical and Electronics Engineers |
| record_format | dspace |
| spelling | oxford-uuid:642b5645-c5ff-4f98-a866-dfcea75ed6ba2022-03-26T18:17:17ZMultipass steering protocols at Jefferson labConference itemhttp://purl.org/coar/resource_type/c_5794uuid:642b5645-c5ff-4f98-a866-dfcea75ed6baSymplectic Elements at OxfordInstitute of Electrical and Electronics Engineers2008Bodenstein, RTiefenback, 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, R 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 bodensteinr multipasssteeringprotocolsatjeffersonlab AT tiefenbackmg multipasssteeringprotocolsatjeffersonlab |