HELMHOLTZ GEMEINSCHAFT VUV FEL EO systems at the DESY VUV-FEL EO systems at the DESY VUV-FEL Stefan Düsterer for the VUV - FEL Team F. Van den Berghe, J. Feldhaus, J. Hauschildt, R. Ischebeck, K. Ludwig, H. Schlarb, B. Schmidt, S. Schmüser, S. Simrock, B. Steffen, A. Winter and all the others Adrian Cavalieri, David Fritz, Soo-Heyong Lee, David Reis (Michigan University Ann Arbor, Michigan)
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HELMHOLTZ GEMEINSCHAFT VUV FEL EO systems at the DESY VUV-FEL Stefan Düsterer for the VUV - FEL Team F. Van den Berghe, J. Feldhaus, J. Hauschildt, R.
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HELMHOLTZ GEMEINSCHAFT VUV FEL
EO systems at the DESY VUV-FELEO systems at the DESY VUV-FEL
Stefan Düsterer
for the VUV - FEL TeamF. Van den Berghe, J. Feldhaus, J. Hauschildt, R. Ischebeck, K. Ludwig, H. Schlarb, B. Schmidt, S. Schmüser, S. Simrock, B. Steffen, A. Winter
and all the others
Adrian Cavalieri, David Fritz, Soo-Heyong Lee, David Reis (Michigan University Ann Arbor, Michigan)
HELMHOLTZ GEMEINSCHAFT VUV FEL
The 2 EOS systemsThe 2 EOS systems
Experiments
EOSEOS
„Electro Optical Sampling“
chirped laser pulse
EOSEOS
„Electro Optical Sampling“
chirped laser pulse
TiSa
fs-oscillator
TEOTEO
„Timing Electro Optical sampling“
45° - geometry
TEOTEO
„Timing Electro Optical sampling“
45° - geometry
pump-probe fs-laser
for FEL-experiments
HELMHOLTZ GEMEINSCHAFT VUV FEL
TTimingimingEOEO
Timing monitor for the FEL-optical pump-probe Experiments
•optimized for electron bunch ARRIVAL TIME measurements
•part of the pump-probe laser system
•final goal:final goal: provide timing data to users
Sampling:• simple analysis• balanced detector allows high sensitivity• good synchronization required• multi-shot method• arbitrary time window possible
Er
Principal oftemporal-
wavelength correlationcamera
Chirp laser method:• single shot method• some more effort for laser and laser diagnostics required • resolution due to laser ~ √t0· tchirp • time window ~ 1-20ps
HELMHOLTZ GEMEINSCHAFT VUV FEL
Space -time correlation methodSpace -time correlation method
Timing o.k.Timing o.k.
EO-Crystal
v
Er
camera
v
laser is „late“laser is „late“
v
laser is „early“laser is „early“
laser
HELMHOLTZ GEMEINSCHAFT VUV FEL
the phase shaper - principlethe phase shaper - principle
actual shaper
HELMHOLTZ GEMEINSCHAFT VUV FEL
Time structure and energy budgetTime structure and energy budget