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https://doi.org/10.18429/JACoW-IPAC2015-TUPMA021
Title Optimization of an Improved SASE (iSASE) FEL
Authors
  • L. Gupta
    Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
  • K. Fang, J. Wu
    SLAC, Menlo Park, California, USA
Abstract In order to improve free electron laser technology for the future LCLSII at SLAC, a new strategy for creating radiation with increased temporal coherence is under development. The improved Self-Amplified Spontaneous Emission (iSASE) FEL utilizes phase shifters which allow for the spontaneously emitted radiation to interact with and stimulate more electrons to radiate coherently. Five phase shifters were simulated, with 34 normal-conducting undulators and focusing-defocusing quadrupoles as an LCLSII FEL lattice using the FEL software Genesis 1.3. Two general schemes, one providing a total phase shift of arbitrary distribution, the other providing a sequential or distributed phase shift, were simulated and optimized using a simulated annealing algorithm. The results suggest that the phase shifters must provide a total shift comparable to the bunch length, and the shifts must be distributed with one large shift, followed by smaller shifts.
Footnotes & References * J. Wu, A. Marinelli, C. Pellegrini, Proc. FEL2012, pp. 237, Japan (2012).
** J. Wu, et al., Proc. IPAC2013, pp. 2068, China (2013).
Funding Supported by US DOE FWP-2013-SLAC-100164 and DOE SULI.
Paper download TUPMA021.PDF [0.548 MB / 3 pages]
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Conference IPAC2015, Richmond, VA, USA
Series International Particle Accelerator Conference (6th)
Proceedings Link to full IPAC2015 Proccedings
Session Tuesday Posters (Madison)
Date 05-May-15   16:00–18:00
Main Classification 2: Photon Sources and Electron Accelerators
Sub Classification A06 - Free Electron Lasers
Keywords FEL, radiation, lattice, undulator, simulation
Publisher JACoW, Geneva, Switzerland
Editors Stuart Henderson (ANL, Argonne, IL, USA); Evelyn Akers (Jlab, Newport News, VA, USA); Todd Satogata (JLab, Newport News, VA, USA); Volker R.W. Schaa (GSI, Darmstadt, Germany)
ISBN 978-3-95450-168-7
Published June 2015
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