1 / 12

Calculation of XFEL injector with PARMELA C é cile Limborg-Déprey, SLAC August 18, 2003

Calculation of XFEL injector with PARMELA C é cile Limborg-Déprey, SLAC August 18, 2003. Beamline description Comparison of Parameters To do list. Description XFEL injector. Description TTF 2 beamline.

odele
Download Presentation

Calculation of XFEL injector with PARMELA C é cile Limborg-Déprey, SLAC August 18, 2003

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. Calculation of XFEL injector with PARMELA Cécile Limborg-Déprey, SLACAugust 18, 2003 • Beamline description • Comparison of Parameters • To do list Cécile Limborg-Déprey, SLAC

  2. Description XFEL injector Cécile Limborg-Déprey, SLAC

  3. Description TTF 2 beamline z = 0 z = 0.25m z = 2.32m z = 13.36 m z =16.1 m z = 19 m 1nC 20ps square pulse with 3s rising edge 3 mm diameter uniform transverse laser pulse Thermal emittance , Ekin=0.55 eV 40MV/m Solenoid 1.6 kG Cécile Limborg-Déprey, SLAC

  4. Tuning with PARMELA to match ASTRA output RF Phase Tuning Define reference particle  center of bunch Define reference phase  maximum energy Cécile Limborg-Déprey, SLAC

  5. Reference Particle in PARMELA at center of bunch Cécile Limborg-Déprey, SLAC

  6. ASTRA PARMELA Summary of results Good agreement Emittance (mm.nrad) 1.38 (PARM.) / 1.28 (ASTRA) Sigma_x (mm) 0.4 (PARM.) / 0.35 (ASTRA) Perfect agreement on bunch length and energy Cécile Limborg-Déprey, SLAC

  7. Summary of results in gun Very Good agreement Small discrepancy in emittance Cécile Limborg-Déprey, SLAC

  8. At 0.25m (Gun Exit) Cécile Limborg-Déprey, SLAC

  9. At 14 m Cécile Limborg-Déprey, SLAC

  10. At 19 m Cécile Limborg-Déprey, SLAC

  11. +10% +10% Sensitivity TTF2 +10% +10% LCLS Cécile Limborg-Déprey, SLAC

  12. Conclusion • Good agreement between codes • Same field maps, initial distribution • Same algorithm • Only variation : meshing • To-do-list : comparison of injectors • Operating range • S ensitivity studies • Tolerances on Bfield, Efield, Ecell1/Ecell2 ,Gunphase, Charge , Acc. Fields, Phases • Tolerance on mis-positioning of components Cécile Limborg-Déprey, SLAC

More Related