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Cavity Package for STF Phase - 2

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

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  1. Cavity Package for STF Phase - 2 ILC08 Chicago Nov. 18, 2008

  2. STF Phase-2 & GS1 Package ILC08 Chicago Nov. 18, 2008

  3. 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

  4. 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

  5. Deep-drawing of Pipes Al Fe ILC08 Chicago Nov. 18, 2008

  6. Cu Nb ILC08 Chicago Nov. 18, 2008

  7. Hydroforming of Coupler Port Niobium Niobium ILC08 Chicago Nov. 18, 2008

  8. New Tuner Configuration ILC08 Chicago Nov. 18, 2008

  9. 50W 41W ILC08 Chicago Nov. 18, 2008

  10. ILC08 Chicago Nov. 18, 2008

  11. 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

  12. 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

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