Traveling wave method for simulating geometric beam coupling impedance of a beam screen with pumping holes
In particle accelerators, pumping holes in a vacuum chamber can be a source of unwanted broadband coupling impedance, leading to beam instabilities. Analytical methods have been previously developed to estimate the impedance of holes in circularlike chambers, e.g., the beam screen of the Large Hadro...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2019-05-01
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| Series: | Physical Review Accelerators and Beams |
| Online Access: | http://doi.org/10.1103/PhysRevAccelBeams.22.051002 |
| _version_ | 1818838943584485376 |
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| author | Sergey Arsenyev Alexej Grudiev Daniel Schulte |
| author_facet | Sergey Arsenyev Alexej Grudiev Daniel Schulte |
| author_sort | Sergey Arsenyev |
| collection | DOAJ |
| description | In particle accelerators, pumping holes in a vacuum chamber can be a source of unwanted broadband coupling impedance, leading to beam instabilities. Analytical methods have been previously developed to estimate the impedance of holes in circularlike chambers, e.g., the beam screen of the Large Hadron Collider (LHC). More sophisticated chamber designs like that of the High Energy LHC and the Future Circular Collider (the hadron-hadron option) call for a different way to calculate the impedance. We propose using the decomposition of the wakefield into synchronous traveling waves and employing a numerical solver to find the impedance of each wave. This method is compared to the direct time domain wakefield calculation method, and its greater sensitivity to small impedances is shown. |
| first_indexed | 2024-12-19T03:46:26Z |
| format | Article |
| id | doaj.art-c5b50b44f01242a9b3d9f850328eab44 |
| institution | Directory Open Access Journal |
| issn | 2469-9888 |
| language | English |
| last_indexed | 2024-12-19T03:46:26Z |
| publishDate | 2019-05-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Accelerators and Beams |
| spelling | doaj.art-c5b50b44f01242a9b3d9f850328eab442022-12-21T20:37:06ZengAmerican Physical SocietyPhysical Review Accelerators and Beams2469-98882019-05-0122505100210.1103/PhysRevAccelBeams.22.051002Traveling wave method for simulating geometric beam coupling impedance of a beam screen with pumping holesSergey ArsenyevAlexej GrudievDaniel SchulteIn particle accelerators, pumping holes in a vacuum chamber can be a source of unwanted broadband coupling impedance, leading to beam instabilities. Analytical methods have been previously developed to estimate the impedance of holes in circularlike chambers, e.g., the beam screen of the Large Hadron Collider (LHC). More sophisticated chamber designs like that of the High Energy LHC and the Future Circular Collider (the hadron-hadron option) call for a different way to calculate the impedance. We propose using the decomposition of the wakefield into synchronous traveling waves and employing a numerical solver to find the impedance of each wave. This method is compared to the direct time domain wakefield calculation method, and its greater sensitivity to small impedances is shown.http://doi.org/10.1103/PhysRevAccelBeams.22.051002 |
| spellingShingle | Sergey Arsenyev Alexej Grudiev Daniel Schulte Traveling wave method for simulating geometric beam coupling impedance of a beam screen with pumping holes Physical Review Accelerators and Beams |
| title | Traveling wave method for simulating geometric beam coupling impedance of a beam screen with pumping holes |
| title_full | Traveling wave method for simulating geometric beam coupling impedance of a beam screen with pumping holes |
| title_fullStr | Traveling wave method for simulating geometric beam coupling impedance of a beam screen with pumping holes |
| title_full_unstemmed | Traveling wave method for simulating geometric beam coupling impedance of a beam screen with pumping holes |
| title_short | Traveling wave method for simulating geometric beam coupling impedance of a beam screen with pumping holes |
| title_sort | traveling wave method for simulating geometric beam coupling impedance of a beam screen with pumping holes |
| url | http://doi.org/10.1103/PhysRevAccelBeams.22.051002 |
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