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Undulator gap error tolerances for wakefield compensation in XFEL

Undulator gap error tolerances for wakefield compensation in XFEL. Igor Zagorodnov BDGM, DESY 08.05.06. SASE 2 parameters. Steady-state. SASE. The maximum power dependence on tapering (left) and the radiation power along the undulator (right). Optimal taper. Steady-state.

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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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