1 / 16

Simulation for TW FEL @ LCLS-II

Simulation for TW FEL @ LCLS-II. Tor’s question on the undulator length in the TW FEL senario SASE FEL undulator length 9, 10, and 11: 9 – 38.72 m, 10 – 43.136 m, 11 – 47.552 m FEL energy 8, 13, and 18 keV

spence
Download Presentation

Simulation for TW FEL @ LCLS-II

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Simulation for TW FEL @ LCLS-II • Tor’s question on the undulator length in the TW FEL senario • SASE FEL undulator length 9, 10, and 11: • 9 – 38.72 m, 10 – 43.136 m, 11 – 47.552 m • FEL energy 8, 13, and 18 keV • LCLS-II Undulator: period 3.2 cm, each undulator magnetic section is 3.4 m, and break length is 1 m • Electron bunch • 4 kA peak current, 0.3 mm-mrademittance, and 1.3 MeV slice energy spread • 13 & 18 keV FEL: electron bunch temporal profile: ideal flattop • 8 keVFEL: electron bunch temporal profile: start-to-end FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

  2. simulation for TW FEL @ LCLS-II S-2-E beam, horns lase strongly SASE 8 keV FEL through a single crystal 0.1 mm thick C(400) with 1.2E-05 (FWHM) bandwidth The FEL centered @ 1.50205 Å FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

  3. simulation for TW FEL @ LCLS-II Seed 8 keV FEL through a single crystal 0.1 mm thick C(400): 1.2E-05 (FWHM) bandwidth with Bragg angle 57o The FEL centered @ 1.50205 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 5 MW seed 8 keV FEL through an 1.2E-05 (FWHM) bandwidth The FEL centered @ 1.50205 Å FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

  5. simulation for TW FEL @ LCLS-II Seeded TW SASE FEL in the seed bandwidth: Gamma-distribution FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

  6. simulation for TW FEL @ LCLS-II 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

  7. simulation for TW FEL @ LCLS-II 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

  8. simulation for TW FEL @ LCLS-II Seeded TW: Taper profile for 1 MW seed 13 keV FEL through a 1.2E-05 (FWHM) bandwidth The FEL centered @ 0.9547 Å FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

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

  10. simulation for TW FEL @ LCLS-II SASE 18 keV FEL through a single crystal 0.1 mm thick C(400) with 2.5E-05 (FWHM) bandwidth The FEL centered @ 0.6898 Å FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

  11. simulation for TW FEL @ LCLS-II Seed Need be improved, but electron beam will determine 18 keV FEL through a single crystal 0.1 mm thick C(400): 2.5E-05 (FWHM) bandwidth with Bragg angle 23o The FEL centered @ 0.6898 Å FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

  12. simulation for TW FEL @ LCLS-II Seeded TW: Taper profile for 1 MW seed 18 keV FEL through a 2.5E-05 (FWHM) bandwidth The FEL centered @ 0.6898 Å FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

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

  14. simulation for TW FEL @ LCLS-II • 8 keV: • ideal (blue) • ideal 3rd harmonic (x 30) (red) • start-to-end (green) Fundamental 6 keV 3rd harmonic @ 18 keV (in progress), but let us look at 8 keV case FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

  15. simulation for TW FEL @ LCLS-II • 8 keV: • ideal (blue) • start-to-end (green) • 13 keV: • ideal (red) 8 vs 13, ideal vs s-2-e FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

  16. simulation for TW FEL @ LCLS-II • Summary • The next episode: • Optimize for 150 m long TW undulator • Any optimization on the break length between the undulator sections FEL and Beam Phys. Dept. (ARD/SLAC), J. Wu, jhwu@slac.stanford.edu

More Related