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| URL | https://doi.org/10.18429/JACoW-IPAC2023-THPL177 |
|---|---|
| Title | BAM system and machine stability at SXFEL |
| Authors |
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| Abstract | Beam arrival time is one of the key fundamental parameters for free-electron laser (FEL) facilities to ensure an accurate synchronization between an electron bunch and a seeded laser. Thus a high-performance beam arrival time/flight time measurement (BAM) system is indispensable for an FEL. A cavity-based BAM system has already been established at the Shanghai Soft-X-ray FEL test facility three years ago. To further optimize the system performance, the impacts of the local oscillator, signal processing window, and temperature around the electronic devices were analyzed, and the related subsystems were upgraded and optimized accordingly. Currently, the upgraded BAM system has been applied at the Shanghai Soft-X-ray FEL user facility. This report will focus on the evaluation of the upgraded BAM system performance and the analysis of the beam instability caused by the beam energy jitter by both analytic calculation and beam test. The beam test results show the deviation of beam flight time can reach 10 fs. Besides, a linear correlation between the beam energy and beam flight time is found and the energy jitter can contribute 33 fs to 65 fs to the beam flight time RMS jitter. |
| Paper | download: THPL177.pdf |
| Cite | BibTeX, LaTeX, Text/Word, RIS, EndNote |
| Conference | 14th International Particle Accelerator Conference |
| Series | |
| Location | Venice, Italy |
| Date | 07-12 May 2023 |
| Publisher | JACoW Publishing, Geneva, Switzerland |
| Editorial Board | Ralph Assmann - Deutsches Elektronen-Synchrotron DESY Peter McIntosh - Science and Technology Facilities Council (STFC/DL/ASTeC) Giovanni Bisoffi - Istituto Nazionale di Fisica Nucleare (INFN/LNL) Alessandro Fabris - Elettra-Sincrotrone Trieste S.C.p.A. Ivan Andrian - Elettra-Sincrotrone Trieste S.C.p.A. Giulia Vinicola - Istituto Nazionale di Fisica Nucleare (INFN/LNF) |
| Online ISBN | 978-3-95450-231-8 |
| Online ISSN | 2673-5490 |
| Received | 03 May 2023 |
| Revised | 17 May 2023 |
| Accepted | 20 June 2023 |
| Issued | 26 September 2023 |
| DOI | 10.18429/JACoW-IPAC2023-THPL177 |
| Pages | 4866-4868 |
| Copyright | Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI. |