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| Title | Maximum Brightness of Linac-Driven Electron Beams in the Presence of Collective Effects | |||||
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| Abstract | Linear accelerators capable of delivering high brightness electron beams are essential components of a number of research tools, such as free electron lasers (FELs) and elementary particle colliders. In these facilities the charge density is high enough to drive undesirable collective effects (wakefields) that may increase the beam emittance relative to the injection level, eventually degrading the nominal brightness. We formulate a limit on the final electron beam brightness, imposed by the interplay of geometric transverse wakefield in accelerating structures and coherent synchrotron radiation in energy dispersive regions*. Numerous experimental data of VUV and X-ray FEL drivers validate our model. This is then used to show that a normalized brightness of 10¹⁶ A/m², promised so far by ultra-low charge beams (1-10 pC), can in fact be reached with a 100 pC charge beam in the Italian FERMI FEL linac, with the existing machine configuration.** | |||||
| Footnotes & References | *Physical Review Special Topics - Accelerators And Beams 17, 110702 (2014) **Physical Review Special Topics - Accelerators And Beams 16, 050701 (2013) |
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| Paper | download THPOA04.PDF [0.405 MB / 3 pages] | |||||
| Poster | download THPOA04_POSTER.PDF [0.828 MB] | |||||
| Export | download ※ BibTeX ※ LaTeX ※ Text/Word ※ RIS ※ EndNote | |||||
| Conference | NAPAC2016, Chicago, IL, USA | |||||
| Series | North American Particle Accelerator Conference (3rd) | |||||
| Proceedings | Link to full NAPAC2016 Proccedings | |||||
| Session | Poster Session (MC2 & MC5) | |||||
| Date | 13-Oct-16 08:30–12:30 | |||||
| Main Classification | 5: Beam Dynamics and EM Fields | |||||
| Sub Classification | D06 - Coherent and Incoherent Instabilities - Measurements and Countermeasures | |||||
| Keywords | ion, brightness, linac, electron, emittance | |||||
| Publisher | JACoW, Geneva, Switzerland | |||||
| Editors | Volker RW Schaa (GSI, Darmstadt, Germany); Maria Power (ANL, Argonne, IL, USA); Vladimir Shiltsev (FNAL, Batavia, IL, USA); Marion White (ANL, Argonne, IL, USA) | |||||
| ISBN | 978-3-95450-180-9 | |||||
| Published | January 2017 | |||||
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