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Analysis of photoinjector transverse phase space in action and phase coordinates
Houjun Qian, Mikhail Krasilnikov, Zakaria Aboulbanine +16
Photoinjectors are the main high brightness electron sources for X-ray free electron lasers (XFEL). Photoinjector emittance reduction is one of the key knobs for improving XFEL las…
Slice energy spread measurement in the low energy photoinjector
Houjun Qian, Mikhail Krasilnikov, Anusorn Lueangaramwong +16
Slice energy spread is one of the key parameters in free electron laser optimizations, but its accurate measurement is not straightforward. Two recent studies from high energy (…
Design studies of a continuous-wave normal conducting buncher for European X-FEL
Shankar Lal, V. Paramonov, H. Qian1 +4
A three-cell 1.3 GHz, Normal Conducting (NC) buncher is designed for a possible future upgrade of the European XFEL to operate in a continuous-wave (CW) / long pulse (LP) mode. The…
Single shot cathode transverse momentum imaging in high brightness photoinjectors
Peng-Wei Huang, Houjun Qian, Ye Chen +18
In state of the art photoinjector electron sources, thermal emittance from photoemission dominates the final injector emittance. Therefore, low thermal emittance cathode developmen…
Generation of quasi continuous-wave electron beams in an L-band normal conducting pulsed RF injector for laboratory astrophysics experiments
Ye Chen, Gregor Loisch, Matthias Gross +8
We report on an approach to produce quasi continuous-wave (cw) electron beams with an average beam current of milliamperes and a mean beam energy of a few MeV in a pulsed RF inject…