UPDATE of RFCC MOUDLE

Derun Li, Steve GourlayLawrence Berkeley National Laboratory

MICE MICO MeetingDecember 21, 2011

CC Magnets

• 1st CC magnet– Cold mass at LBNL

• First physical (CMM) and electrical measurements complete;• Design of the cooling circuit finalized for Fermilab testing;• Vacuum potting prep underway;• Thermal stress analysis during cool-down complete;• PID (Piping and Instrumentation Diagram) in progress.

– Quench protection• Contract signed with MIT;• Preliminary analysis of QP indicated 4 sub-divisions may be adequate

(original design has 8);• Design of the stabilization of HTS and SC current and QP leads

underway at MIT.

Cold Mass at LBNLCMM measurements completeLH pipe bending completeReady for machining pipe groove and cold mass support brackets

1st Electrical measurementcomplete: measured resistance between in-out and QP leads consistent with the design

Update of LH Cooling Pipe Design for the 1st Cold Mass Testing in Progress

CC Magnets• 1st CC magnet

– Testing preparation at Fermilab• FSU cryostat;• Testing location identified;• …

– SC wires (261 km) ready to be ordered – Review of the cryostat drawings nearly complete;– Modification/updating of the drawings in progress at LBNL

• Cryostat fabrication readiness review after next MICE Collaboration meeting (Feb. 8-11, 2012)

• Winding procedure review in China (Mar. - Apr. 2012)• Winding of the 2nd coil could start June 2012 or earlier if we

decide to mix two different SC wires

MICE RF Cavities• Electro-polishing (EP) set up at LBNL ready;• Waiting for ES&H approval;• Expect to start early 2012.

Design

MICE RF Cavities• RF coupler design updated;• Additional welding of cavity support struts

complete;• Single cavity vessel fabrication complete and expect

to arrive Fermilab this month;• Fabrication of six tuner arms in progress at

Fermilab;• Discussions on potential assistance from LBNL on

MICE LLRF control initiated.