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Undulator Gap Error Tolerances for Wakefield Compensation in XFEL

Explore the impact of undulator gap errors on power gain and radiation energy in XFEL operations. Analyze the optimal tapering and steady-state SASE parameters for effective wakefield compensation.

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Undulator Gap Error Tolerances for Wakefield Compensation in XFEL

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  1. Undulator gap error tolerances for wakefield compensation in XFEL Igor Zagorodnov BDGM, DESY 08.05.06

  2. SASE 2 parameters

  3. Steady-state SASE The maximum power dependence on tapering (left) and the radiation power along the undulator (right)

  4. Optimal taper

  5. Steady-state Impact of statistical errors of undulator gap on power gain.

  6. Steady-state vs. SASE

  7. Steady-state SASE

  8. Steady-state SASE

  9. Steady-state SASE

  10. For 5 mkm gap error at position z=130m Steady-state SASE Steady-state vs. SASE

  11. The gap error results • in decrease of the expected radiation energy by 10% • in RMS deviation of the radiated energy by 16%

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