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| Title | Reversible Electron Beam Heater without Transverse Deflecting Cavities | |||||
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| Abstract | Suppression of microbunching instability in modern FELs is an important issue that often limits the performance of the machine. A technique to suppress the instability with the help of a reversible electron beam heater was proposed by C. Behrens, Z. Huang, and D. Xiang [*]. It employs transverse deflecting cavities synchronized in a way that one of the cavities, located before a bunch compressor, generates a slice energy spread, while the other one removes it after the beam passes through the bunch compressor. Being an attractive approach, this concept unfortunately imposes extremely tight tolerances on the synchronization of the cavities. In this paper we demonstrate that a reversible heater equivalent to that of Behrens et al. can be designed using much simpler elements: bend magnets and quadrupoles in combination with the energy chirp of the beam. | |||||
| Footnotes & References | * C. Behrens, Z. Huang, and D. Xiang, PRST-AB 15, 022802 (2012). | |||||
| Funding | This work was supported by Department of Energy contract DE-AC03-76SF00515. | |||||
| Paper | download MOP056.PDF [0.146 MB / 5 pages] | |||||
| Conference | FEL2015, Daejeon, Republic of Korea | |||||
| Series | International Free Electron Laser Conference (37th) | |||||
| Proceedings | Link to full FEL2015 Proccedings | |||||
| Session | Poster Session | |||||
| Date | 24-Aug-15 15:00–17:00 | |||||
| Main Classification | Electron Beam Dynamics | |||||
| Keywords | emittance, electron, cavity, optics, synchrotron | |||||
| Publisher | JACoW, Geneva, Switzerland | |||||
| Editors | Heung-Sik Kang (PAL, Pohang, Republic of Korea); Dong Eon Kim (PAL, Pohang, Republic of Korea); Volker RW Schaa (GSI, Darmstadt, Germany); | |||||
| ISBN | 978-3-95450-134-2 | |||||
| Published | December 2015 | |||||
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