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Simulation Results of Microbunching Instability with Velocity Bunched Beam on the FLASH

Simulation Results of Microbunching Instability with Velocity Bunched Beam on the FLASH. FEL Beam Dynamics Meeting July 23, 2007 Donghoon Kuk (MPY). Contents. GlueTrack Velocity bunching phase(φ 2 ) scan BC2 dipole magnet curvature bending radius scan

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Simulation Results of Microbunching Instability with Velocity Bunched Beam on the FLASH

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  1. Simulation Results ofMicrobunching Instabilitywith Velocity Bunched Beamon the FLASH FEL Beam Dynamics Meeting July 23, 2007 Donghoon Kuk (MPY)

  2. Contents • GlueTrack • Velocity bunching phase(φ2) scan • BC2 dipole magnet curvature bending radius scan • BC3 dipole magnet curvature bending radius scan • Conclusion

  3. GlueTrack Igor Zagorodnov - GlueTrack Interpreter for S2E Beam Dynamic Simulations Jan 23, 2006

  4. From Mikhail Krasilnikov Velocity Bunching Phase Scan • Velocity bunching phase scan (ACC1)

  5. Velocity Bunching Phase Scan • Phi2 Scan (-90˚ ~ -105 ˚) At the End of ACC1

  6. Velocity Bunching Phase Scan • Selected phi2 = -98 ˚

  7. BC2 Scan

  8. BC3 Scan (type1) BC2=2.524955 BC3=3.60 BC2=2.604955 BC3=3.60

  9. BC3 Scan (type2) BC2=2.524955 BC3=4.4 BC2=2.524955 BC3=4.2 BC2=2.544955 BC3=4.4 BC2=2.564955 BC3=4.2

  10. BC3 Scan (type2) BC2=2.524955 BC3=4.4 BC2=2.524955 BC3=4.2 BC2=2.544955 BC3=4.4 BC2=2.564955 BC3=4.2

  11. BC3 Scan (type2) BC2=2.564955 BC3=4.4

  12. BC3 Scan (type2) BC2=2.564955 BC3=4.4

  13. BC3 Scan (type3) BC2=2.544955 BC3=3.6 Needs more exact numerical analysis! BC2=2.584955 BC3=3.6 BC2=2.564955 BC3=3.6

  14. BC3 Scan (type4) BC2=2.524955 BC3=3.8 BC2=2.524955 BC3=4.0 BC2=2.584955 BC3=4.4 BC2=2.584955 BC3=4.2

  15. BC3 Scan (type4) BC2=2.524955 BC3=3.8 BC2=2.524955 BC3=4.0 BC2=2.584955 BC3=4.4 BC2=2.584955 BC3=4.2

  16. BC3 Scan (type4) BC2=2.604955 BC3=3.8 BC2=2.604955 BC3=4.0 BC2=2.604955 BC3=4.4 BC2=2.604955 BC3=4.2

  17. BC3 Scan (type4) BC2=2.604955 BC3=3.8 BC2=2.604955 BC3=4.0 BC2=2.604955 BC3=4.4 BC2=2.604955 BC3=4.2

  18. Conclusion • Next Step • Increase the particle number order of million to check the microbunching instability from the numerical error • Gain calculation • In acknowledgment for guidance of Torsten Limberg, Igor Zagorodnov and all the other people of the MPY.

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