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Cavity Package for STF Phase - 2. STF Phase-2 & GS1 Package. Improvement in the STF Baseline Cavities. Fr. Fz. Cell Taper 13 deg. → 10 deg. TTF Cavity. Beam Tube f 78 → f 84. STF Baseline Cavity. f 80. Inside M – Shield. Thick Titanium Baseplate,
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Cavity Package for STF Phase - 2 ILC08 Chicago Nov. 18, 2008
STF Phase-2 & GS1 Package ILC08 Chicago Nov. 18, 2008
Improvement in the STF Baseline Cavities Fr Fz Cell Taper 13 deg. →10 deg. TTF Cavity Beam Tube f78 → f84 STF Baseline Cavity f80 Inside M – Shield. Thick Titanium Baseplate, Thick Nb Beam Tube & Thick Nb End-cell Input Port f40 → f60 STF Baseline Cavity TTF Cavity Stiffness of Cavity Fixing Support72 kN/mm22 kN/mm Lorentz Detuning-520 Hz-870 Hz(31.5 MV/m) ILC08 Chicago Nov. 18, 2008
Fabrication of STF Baseline Cavities Center-cells (Tokyo Denkai ; RRR~300 Nb) HOM coupler End-groups Four cavities were fabricated by MHI (Mitsubishi Heavy Industries) Magnetic Shield ILC08 Chicago Nov. 18, 2008
Deep-drawing of Pipes Al Fe ILC08 Chicago Nov. 18, 2008
Cu Nb ILC08 Chicago Nov. 18, 2008
Hydroforming of Coupler Port Niobium Niobium ILC08 Chicago Nov. 18, 2008
New Tuner Configuration ILC08 Chicago Nov. 18, 2008
50W 41W ILC08 Chicago Nov. 18, 2008
Tesla-like STF Baseline Cavity Package Inside Magnetic Shield Support base 2K He line Invar Rod Titanium Jacket Motor drive shaft Pulse motor (outside) Piezo element Replaceable Nb/Ti Flange Slide Jack Tuner ILC08 Chicago Nov. 18, 2008
Input Coupler for STF Baseline Cavities Improved design for simplicity with no tuning mechanism. TRISTAN Type Coaxial Disk Ceramic ; (KEKB 1 MW/cw, JPARC-ADS 2.2 MW/pulse, SNS) Warm window Cold window Beam pipe 5K cooling Doorknob conversion Vacuum port 80K cooling 80 K 5 K 2 K Static Loss 5 W 1.1 W 0.05 W Dynamic Loss 3 W 0.2 W 0.03 W ILC08 Chicago Nov. 18, 2008