Speaker
Mr
Aleksandar Angelovski
(TU Darmstadt)
Description
Laser wakefield accelerators are capable of accelerating electron
bunches to energies on the GeV scale over acceleration distances of
only a few cm. However, the beam quality still can be improved
especially in terms of energy spread and emittance. In order to gain
more insight into the acceleration process, the high-quality electron
bunches produced by the conventional accelerator REGAE at DESY are planned to be injected into a laser driven wakefield. The timing between driving laser and probing bunch is of utmost importance since the wakefield structure is typically on the order of a few 100 fs.
Several measurement techniques are available for measuring the
arrival-time of the electron beam with fs resolution. Based on the
detection scheme (resonant or broadband), different pickup structures
can be used (cavities, striplines, buttons). As the bunch charge in
this case is as low as 100 fC, the selection of the detection scheme
and with that the selection of the pickups is extremely challenging.
Namely, such a low charge of the beam induces a very low voltage
levels in the pickups. The selected pickup structures need to be
optimized in order to maximize the induced voltage levels in the
pickups.
Primary author
Mr
Aleksandar Angelovski
(TU Darmstadt)
Co-authors
Dr
Andreas Penirschke
(TU Darmstadt)
Mr
Benno Zeitler
(CFEL & UHH)
Prof.
Florian Gruener
(University Hamburg)
Irene Dornmair
(University of Hamburg)
Prof.
Rolf Jakoby
(TU Darmstadt)
