Develop treatment for spl sc cavities at cern

Develop treatment for SPL sc cavities at CERN (In particular for β= 0.65)

• Develop treatment for SPL sc cavities at CERN (In particular for β= 0.65)

• (*) The HPWR has not been operated for > 2 years. Diagnostics, controls, need to be replaced. All system needs cleaning/revamping.

• A proposal was made for last year (“SCRF facility”), we re-iterate this request for 2010

Contribute to cryomodule design

• Contribute to cryomodule design

• Cryogenics/vacuum sectorisation

• Coupler issues: surface treatments, outgassing

• Too early for clear definition of objectives and deliverables

SC linacs maintain beam quality for energy variable machines

• SC linacs maintain beam quality for energy variable machines

• The maximum effective voltage can be applied to lighter masses so to have a higher final energy.

• SC linacs provide the highest flexibility of operation

• Quarter waver cavities already well-known in several labs

• Nb/Cu technology chosen over bulk-Nb for mechanical stability (reduction of microphonics and sensitivity to He bath pressure), no magnetic shielding (simpler cryostat), lower cost

• Lead the work to transform the RF design into a real accelerating cavity that satisfies design specifications.

• Coordination of mechanical design: for the cavity, the coating system, the chemistry facilities and all related tooling. To set-up SC samples testing
• Coordination of mechanical fabrication
• Optimisation of surface treatment and coating
• Definition of vacuum overall layout for cryomodule

Cavity prototype: coating development, surface treatment optimization, achieve nominal specifications by end 2009

• Cavity prototype: coating development, surface treatment optimization, achieve nominal specifications by end 2009

• Giulia Lanza, Antonio Mongelluzzo, Jean Cave, Leonel Ferreira, Serge Forel.

• HIE-linac general vacuum layout: define requirements and specifications, hardware definition, diagnostics.

• Jan Hansen

• HIE-ISOLDE front end: optimization of vacuum issues (hardware location, maintenance) in a highly radioactive environment

• Kurt Weiss