TESLA Technology Collaboration (TTC) Meeting

Welcome and introduction; status and progress reports for the regions

Regional Status

Cavity material, fabrication, treatment and testing: new concepts and new benefits.
Scope：This Working Group should address the recent results and trends in cavity design, cavity material (Nb, large grain, single crystal, thin films, HTC material) and cavity surface treatments, and their expected benefits. Possible topics are : DESY large grain cavities, SPIRAL2 cavity materials and fabrication; Spoke cavity fabrication and applications (low-beta, beta=1); VEP facilities and experience; Thin films and/or thin film cavities; SRF R&D program for the future.”

Cryogenics and cryostats : savings in cooling power.
Scope: Cutting operational costs through the reduction of cryogenic power is of generic benefit for SCRF systems and an obligation for CW operation. Cryogenics 4K and 2K higher efficiencies, better insulated and thermalized cryostats, and better magnetically shielded cavities are, among others, means which should be reviewed by this Working Group. Some trends and lines of research should be drawn at Beijing, so that the progress would be reviewed at our next TTC meeting in 2012.

Cryomodule Test Results and Analysis.
Scope:The status of integrated cryomodule cold RF tests should be reviewed transversely to all applications and all beams: ILC, XFEL, Cebaf, SPIRAL2, NML, etc. The session should focus on getting the lessons and experience from Cebaf2 and SPIRAL2 cryomodules at moderate gradients, FLASH-XFEL modules at medium to high gradients, NML and particularly S1-global at high gradients, and more if it exists. The issues of field gradient degradation; conditioning, breakdown, static and dynamic thermal load of input couplers; performance of tuners; alignment process and stability control cryogenics performance and control should also be covered.

Cryogenics and cryostats : savings in cooling power.
Scope: Cutting operational costs through the reduction of cryogenic power is of generic benefit for SCRF systems and an obligation for CW operation. Cryogenics 4K and 2K higher efficiencies, better insulated and thermalized cryostats, and better magnetically shielded cavities are, among others, means which should be reviewed by this Working Group. Some trends and lines of research should be drawn at Beijing, so that the progress would be reviewed at our next TTC meeting in 2012.

Technical Discussions (Organized by Technical Board)