Improved calibration of rf cavities for relativistic electron beams: Effects of secondary corrections and experimental verification
In the aspect of longitudinal beam bunching, the bunching strength can be controlled by the rf cavity phase and voltage. However, these machine parameters are different from those that interact with the beam itself. In order to gain control of the beam-cavity interaction, cavity calibration must be...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2023-06-01
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| Series: | Physical Review Accelerators and Beams |
| Online Access: | http://doi.org/10.1103/PhysRevAccelBeams.26.064201 |
| _version_ | 1797805346750726144 |
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| author | K. Shih I. Petrushina V. N. Litvinenko I. Pinayev J. Ma G. Wang Y. Jing Y. Wu |
| author_facet | K. Shih I. Petrushina V. N. Litvinenko I. Pinayev J. Ma G. Wang Y. Jing Y. Wu |
| author_sort | K. Shih |
| collection | DOAJ |
| description | In the aspect of longitudinal beam bunching, the bunching strength can be controlled by the rf cavity phase and voltage. However, these machine parameters are different from those that interact with the beam itself. In order to gain control of the beam-cavity interaction, cavity calibration must be performed. Furthermore, it relies on fitting the beam energy gain versus cavity phase to a calibration function. Under the conventional assumption of relativistic beam conditions, the calibration function is a first harmonic sinusoidal function (a sinusoidal function with a period of 2π). However, this expression is insufficient for a high-voltage bunching cavity. Due to beam acceleration inside the cavity, an energy bias and a second harmonic function should be included to modify the conventional calibration function, even for a relativistic electron beam. In this paper, we will derive this modification and provide a comparison to both the Coherent Electron Cooling Experiment and the impact-t simulation, respectively. |
| first_indexed | 2024-03-13T05:50:43Z |
| format | Article |
| id | doaj.art-42c17e2575fb47c4b0245e86434326f3 |
| institution | Directory Open Access Journal |
| issn | 2469-9888 |
| language | English |
| last_indexed | 2024-03-13T05:50:43Z |
| publishDate | 2023-06-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Accelerators and Beams |
| spelling | doaj.art-42c17e2575fb47c4b0245e86434326f32023-06-13T14:20:05ZengAmerican Physical SocietyPhysical Review Accelerators and Beams2469-98882023-06-0126606420110.1103/PhysRevAccelBeams.26.064201Improved calibration of rf cavities for relativistic electron beams: Effects of secondary corrections and experimental verificationK. ShihI. PetrushinaV. N. LitvinenkoI. PinayevJ. MaG. WangY. JingY. WuIn the aspect of longitudinal beam bunching, the bunching strength can be controlled by the rf cavity phase and voltage. However, these machine parameters are different from those that interact with the beam itself. In order to gain control of the beam-cavity interaction, cavity calibration must be performed. Furthermore, it relies on fitting the beam energy gain versus cavity phase to a calibration function. Under the conventional assumption of relativistic beam conditions, the calibration function is a first harmonic sinusoidal function (a sinusoidal function with a period of 2π). However, this expression is insufficient for a high-voltage bunching cavity. Due to beam acceleration inside the cavity, an energy bias and a second harmonic function should be included to modify the conventional calibration function, even for a relativistic electron beam. In this paper, we will derive this modification and provide a comparison to both the Coherent Electron Cooling Experiment and the impact-t simulation, respectively.http://doi.org/10.1103/PhysRevAccelBeams.26.064201 |
| spellingShingle | K. Shih I. Petrushina V. N. Litvinenko I. Pinayev J. Ma G. Wang Y. Jing Y. Wu Improved calibration of rf cavities for relativistic electron beams: Effects of secondary corrections and experimental verification Physical Review Accelerators and Beams |
| title | Improved calibration of rf cavities for relativistic electron beams: Effects of secondary corrections and experimental verification |
| title_full | Improved calibration of rf cavities for relativistic electron beams: Effects of secondary corrections and experimental verification |
| title_fullStr | Improved calibration of rf cavities for relativistic electron beams: Effects of secondary corrections and experimental verification |
| title_full_unstemmed | Improved calibration of rf cavities for relativistic electron beams: Effects of secondary corrections and experimental verification |
| title_short | Improved calibration of rf cavities for relativistic electron beams: Effects of secondary corrections and experimental verification |
| title_sort | improved calibration of rf cavities for relativistic electron beams effects of secondary corrections and experimental verification |
| url | http://doi.org/10.1103/PhysRevAccelBeams.26.064201 |
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