| Paper | Title | Page |
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| TUPTPF013 | Stripline Devices for FLASH and European XFEL | 110 |
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Currently, a prototype fast intra bunch train feedback system is under development which is to be tested at FLASH. For pickups as well as kickers, stripline devices have been developed. The new pickup is based on the earlier designs used in the transfer lines of the swiss light source as well as in the proton cyclotron PROSCAN at PSI; in particular, the stripline electrode output coupling is intentionally mismatched in order to increase the shunt impedance seen by the beam. Two versions have been designed for a center frequency of 1.65 GHz and a loaded Q of 35. Prototypes have been fabricated and built into FLASH. The stripline kicker consists of four main elements (all in-vacuum): two stripline electrodes fabricated from extruded aluminum and two metallic ground planes, held in place by ceramic spacers. The latter reduce the mutual inductance between the electrodes and optimize the RF match for asymmetries in the RF feed. Prototypes have been built, measured in the lab, and are now in the process of being inserted into FLASH. |