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Simulation for TW FEL @ LCLS-II

Simulation for TW FEL @ LCLS-II. Working with T. Raubenheimer, H.-D. Nuhn, M. Rowen, et al. Tor’s question on the dependence of TW FEL on the electron energy Looking at 13 keV (0.955 Å) FEL Seeded FEL with 1 MW seed:

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Simulation for TW FEL @ LCLS-II

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  1. Simulation for TW FEL @ LCLS-II Working with T. Raubenheimer, H.-D. Nuhn, M. Rowen, et al. • Tor’s question on the dependence of TW FEL on the electron energy • Looking at 13 keV (0.955 Å) FEL • Seeded FEL with 1 MW seed: • Obtained based on the SASE FEL simulation with 10 undulators for Electron bunch energy of 13.64 GeV (43.136 m) • Electron energy 10.5, 12, and 13.64 GeV • LCLS-II Undulator: period 3.2 cm, each undulator magnetic section is 3.4 m, and break length is 1 m • Electron bunch: • Start-to-end beam: mimic of ideal bunch with 4 kA peak current, 0.3 mm-mrademittance, and 1.3 MeV slice energy spread FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

  2. simulation for TW FEL @ LCLS-II: electron 13.64 GeV SASE 13 keV FEL through a single crystal 0.1 mm thick C(400) with 1.2E-05 (FWHM) bandwidth The FEL centered @ 0.9547 Å FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

  3. simulation for TW FEL @ LCLS-II: electron 13.64 GeV Seed 13 keV FEL through a single crystal 0.1 mm thick C(400): 1.2E-05 (FWHM) bandwidth with Bragg angle 32o The FEL centered @ 0.9547 Å FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

  4. simulation for TW FEL @ LCLS-II Seeded TW: Taper profile for 1 MW seed Seeded TW Ideal flattop electron bunch SASE FEL in the seed bandwidth: Gamma-distribution FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

  5. simulation for TW FEL @ LCLS-II With S-2-E beam: tuning (in simulation) details FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

  6. simulation for TW FEL @ LCLS-II With S-2-E beam: tuning (in simulation) details FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

  7. simulation for TW FEL @ LCLS-II With S-2-E beam: tuning (in simulation) details FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

  8. simulation for TW FEL @ LCLS-II With S-2-E beam: tuning (in simulation) details FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

  9. simulation for TW FEL @ LCLS-II With S-2-E beam: tuning (in simulation) details FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

  10. simulation for TW FEL @ LCLS-II Need to further work on the 12 GeVcase With S-2-E beam: energy dependence FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

  11. simulation for TW FEL @ LCLS-II Need to further work on the 12 GeVcase With S-2-E beam: energy dependence: FEL pulse temporal profile @ 200 m FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

  12. Simulation for TW FEL @ LCLS-II • Heinz-Dieter N., Tor R., and Michael R. ’s question on the dependence of high power FEL on the FEL wavelength • Hard X-rays: 8, 13, and 18 keV (Tor showed just now) [will add 4 and 6 keV] • Soft X-rays: 0.25 and 2 keV [will add 1 keV] FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

  13. Simulation for TW FEL @ LCLS-II • X-ray parameter table • 2 keV: 0.1 MW seed, 3 kA, 40 pC, 0.5 mm-mrad; • 0.25 keV: 20 kW seed, 2 kA, 100 pC, 0.5 mm-mrad FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

  14. simulation for TW FEL @ LCLS-II With S-2-E beam: 0.25 keV and 2 keV FEL FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

  15. simulation for TW FEL @ LCLS-II With S-2-E beam: 0.25 keV and 2 keV FEL FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

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