| Paper |
Title |
Page |
| MOPPH011 |
A Simple Method for Timing an XFEL Source to High-Power Lasers
|
29 |
| |
- G. Geloni, E. Saldin, E. Schneidmiller, M. V. Yurkov
DESY, Hamburg
|
|
| |
We propose a technique for timing an XFEL to a high-power laser with femtosecond accuracy. The same electron bunch is used to produce an XFEL pulse and an ultrashort optical pulse that are, thus, naturally synchronized. Cross-correlation techniques will yield the relative jitter between the optical pulse (and, thus, the XFEL pulse) and a pulse from an external pump-laser with femtosecond resolution. Technical realization will be based on an optical replica synthesizer (ORS) setup to be installed after the final bunch-compressor. The electron bunch is modulated in the ORS by an external optical laser. Travelling through the main undulator, it produces the XFEL pulse. Then, a powerful optical pulse of coherent edge radiation is generated as the bunch passes through a long straight section and a separation magnet downstream of the main undulator. Relative synchronization of these pulses is preserved using the same mechanical support for X-ray and optical elements transporting radiation to the experimental area, where single-shot cross-correlation between optical pulse and pump-laser pulse is performed. We illustrate our technique with numerical examples referring to the European XFEL.
|
|
| MOCAU05 |
A Scheme for Stabilization of Output Power of an X-ray SASE FEL
|
181 |
| |
- G. Geloni, E. Saldin, E. Schneidmiller, M. V. Yurkov
DESY, Hamburg
|
|
| |
Stability of XFEL radiation is naturally linked to stability of the linac RF system through bunch compression, leading to very tight requirements on RF amplitude and phase. We propose a new scheme that allows to relax these requirements by a large factor.
|
|
|
Slides
|
|