OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · 2008 · 16 citations · 0 references
EngineeringElectrical EngineeringLow-power DesignMicroelectronicsPlasma PhysicsSuperconducting Magnet SystemsSuperconducting Thin FilmsCavity DesignCryogenic EngineeringCryogenic System DesignCryogenic SystemsCryogenic Thermal DesignDipole ModesNbti Magnet TechnologySuperconducting Resonators
Based on initial testing of the “HG” and “LL” 7-cell cavities in the prototype cryomodule Renascence, several opportunities for improved optimization were identified. The HOM damping configuration was refined so as to meet the requirements for damping key dipole modes while simultaneously dramatically reducing risk of HOM pickup probe heating and also creating beamline clearance for mounting the tuner to stainless steel helium vessel endplates (rather than NbTi/Ti transitions to a titanium helium vessel). Code modeling and bench measurements were performed. The new design maintains the 7-cell LL cells and incorporates a brazed transition between Nb and the SS helium vessel. The resulting configuration is now called the “C100” design. Cavity design details as well as vertical dewar and horizontal test bed performance are presented.