Kostin, D.

Paper	Title	Page
MOP49	Status And Operating Experience of The TTF Coupler	156
	W.-D. Möller, D. Kostin DESY, Hamburg
	Five accelerating modules are installed in the VUV FEL linac so far. This includes 40 high power couplers connected to the superconducting cavities, eight in every module. All of them are processed and operated up to the cavity performance limits. The coupler processing procedure is described. The performance in relation to the test results on the coupler test stands are discussed.
	Transparencies
MOP67	TESLA RF Power Coupler Thermal Calculations	174
	D. Kostin, M. Dohlus, W.-D. Möller DESY, Hamburg
	The main RF power coupler is one of the key elements of the accelerating module for the superconducting linac. It provides RF power to the cavity and interconnect different temperature layers in the module. Therefore statistical and dynamical thermal losses have to be optimized. Different operating modes as well as geometries were investigated. Coupler design optimization studies are carried out for TESLA and for the XFEL case. Especially long pulse operation for the X-FEL is being investigated.
THP32	New Accelerating Modules RF Test at TTF	672
	D. Kostin DESY, Hamburg
	Five new accelerating modules were installed into the TTF tunnel as a part of the VUV FEL Linac. They are tested prior to the linac operation. The RF test includes processing of the superconducting cavities, as well as maximum module performance tests. The test procedure and the achieved performance together with the test statistical analysis are presented.