Not a Talk, just a contribution to the discussions.

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Presentation transcript:

Not a Talk, just a contribution to the discussions

Chicane G. Stupakov FEL 2009 Modulator 1 + Chicane 1 Modulator 2 Laser1 Electron beam Chicane Radiator 1 Modulator 2 Laser2 Modulator 1 + Chicane 1 Modulator 2 + Chicane 2 G. Stupakov FEL 2009

energy spread distribution non-gaussian!

Bunching as a function of imprinted energy modulation in the first Modulator

Bunching as a fuction of imprinted energy modulation in the second Modulator

Second Chicane

41 Harmonic, 4% Bunching,

ex / ey = 0.5 mm sz = 1.5 mm l1=l2= 267nm, 67th Harmonic , 2% Bunching I=1600 A l1=l2= 267nm, 67th Harmonic , 2% Bunching Whole bunch seeded 13.6 m Undulator (intersection included) S2E-simulation 20 pC FLASH Igor Zagorodnov Rad. exit Rad. entrance Unseeded beam seeded beam seeded beam Unseeded beam Unseeded beam

ex / ey = 0.5 mm sz = 15 mm l1=l2= 267nm 67th Harmonic , 2% Bunching I=1600 A l1=l2= 267nm 67th Harmonic , 2% Bunching 5fs seed pulselength 13.6 m Undulator (intersection included) 20 m Undulator (intersection included)