Normal Conducting RF Derun Li Center for Beam Physics Lawrence Berkeley National Laboratory March 5-6, 2013.

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Presentation transcript:

Normal Conducting RF Derun Li Center for Beam Physics Lawrence Berkeley National Laboratory March 5-6, 2013

805 MHz Modular Cavity Modular cavity design and fabrication –New RF cavity to replace the damaged 805-MHz LBNL pillbox cavity for normal conducting RF experiments at the MTA –New waveguide coupler that fits inside the MTA solenoid Cavity fabrication uses the state-of-art of techniques developed at SLAC RF breakdown studies in external magnetic field Modular design for testing of different materials (beryllium, copper), surface finish and processing (EP, brite- dip, etc..) end-plates Different cavity lengths (time transit factor) March 5-6, 2013 Derun Li | DOE Mini-Review of MAP (FNAL, March 5-6, 2013)2 MTA Solenoid Cavity support rail Modular cavity complex

201 MHz Cavity Program –Cavity testing vessel at Fermilab Dimensions and features similar to MICE RFCC vacuum system RF commissioning and testing with external magnetic field –Will require a coupling coil magnet for testing at MTA March 5-6, 2013 Derun Li | DOE Mini-Review of MAP (FNAL, March 5-6, 2013)3 Single cavity vessel Configuration of cavity and the vessel Loop coupler Vacuum pump Tuner actuator (above) Tuner arms (below) 6 Tuners

Goals for FYs13,14 and 15 NCRF cavity design and testing –Fabrication, installation and testing at MTA of the SLAC 805-MHz pillbox cavity –Design studies of new 805-MHz cavity and coupler for late-stage cooling channels (Guggenheim, HCC and FOFO-snake) –Design optimization through MP, FE simulation studies in external magnetic fields –Cavity material and coatings –RF coupler –Time-transit factor –Integration of the RF cavity into the late-stage cooling channel and testing –Ceramic loaded RF cavity study and integration with cooling channel –High power test of new 805-MHz cavity in multi-Tesla magnetic fields –Prototype HPRF cavity design, fabrication, integration and testing MICE cavity production and support –RF cavities for two RFCC modules –Support of MICE RFCC module installation, commissioning and operation –Support of MICE LLRF control –ALD of MICE cavities Continue systematic RF breakdown studies at different frequencies, stored energy, external magnetic fields –Experimental studies and development of theory March 5-6, 2013 Derun Li | DOE Mini-Review of MAP (FNAL, March 5-6, 2013)4