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1.3 GHz FNALDressed Cavity
S-1 Global Deliverable to KEK
7 July 2009
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S1-Global Cryomodule
4 KEK cavities
2 DESY, 2 FNAL cavities
Goal: Demonstrate a cryomodule with an average accelerating
gradient of 31.5 MV/m
Fermilab is committed to global international design and collaboration.
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INFN Bladetuner Installation Issues with KEK WPM & Heat Shields
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Motor Interference with Shield andKEK WPM Pipe
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According to INFN, the piezos must be mounted in the horizontal position. In this position, the motor interferes with the KEK WPM pipe.
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Current Dressed Cavity Design
Magnetic shielding not shown
•2 Dressed cavities•HOM couplers, cables, heat sinks•2 He Supply pipe bellows•2 Inter-cavity bellows •Warm and cold couplers•Magnetic shielding as shown•Bladetuner with motor•Seals•Cables•Hardware as shown
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Current Dressed Cavity Design
Magnetic shielding shown
•2 Dressed cavities•HOM couplers, cables, heat sinks•2 He Supply pipe bellows•2 Inter-cavity bellows •Warm and cold couplers•Magnetic shielding as shown•Bladetuner with motor•Seals•Cables•Hardware as shown
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Bladetuner Cables
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Potential Issues• Needle bearings• Main coupler external mounts, hardware,
alignment tooling for installation• Magnetic shielding interface with DESY
cavities• 2-phase He pipe cut-offs and welding the
bellows into the system• Heat-sink straps for coupler shields• Gatevalves / 90 deg valves / blankoffs