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Compensation of Lorenz detuning 1. Slide-jack tuner (A1, A2, A3)

Compensation of Lorenz detuning 1. Slide-jack tuner (A1, A2, A3) 2. Saclay tuner (C3, C4) 3. Blade tuner (C1) ( C2 & A4 were not tested, yet ). KEK Control system of Piezo Tuner. Piezo control by PC Monitor of detuning frequency. Piezo driver for

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Compensation of Lorenz detuning 1. Slide-jack tuner (A1, A2, A3)

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  1. Compensation of Lorenz detuning 1. Slide-jack tuner (A1, A2, A3) 2. Saclay tuner (C3, C4) 3. Blade tuner (C1) (C2 & A4 were not tested, yet) S1-G for TTC meeting Global Design Effort

  2. KEK Control system of Piezo Tuner Piezo control by PC Monitor of detuning frequency Piezo driver for KEK cavities (+1000V) Piezo driver for DESY/FNAL cavities (+200V) S1-G for TTC meeting Global Design Effort

  3. Parameters of Piezo drive pulse Pre-detuning by motor tuner drive frequency (Hz) Piezo drive pulse drive V Eacc control panel dc V D ft Single pulse of inverse cosine waveform Pinput RF Feedback / ON delay time S1-G for TTC meeting Global Design Effort

  4. Compensation of Lorentz detuning (A2) A2/MHI-06 38 MV/m A2/MHI-06 (Slide Jack) 38 MV/m drive f = 200Hz drive V = 400V dc V = 140V FB/on, Piezo/off FB/on, Piezo/on D f at rise time ~ 700Hz pre-det. ~ 600Hz drive f = 315Hz drive V = 400V dc V = 100V drive f = 300Hz drive V = 400V dc V = 35V D f ~ 200Hz 100Hz/div. drive f = 400Hz drive V = 300V dc V = 120V S1-G for TTC meeting Global Design Effort

  5. Compensation of Lorentz detuning (A3) A3/MHI-07 32.5 MV/m A3/MHI-07 (Slide-Jack) 32.5 MV/m drive f = 200Hz drive V = 500V dc V = 30V FB/on, Piezo/off FB/on, Piezo/on pre-det. ~ 500Hz drive f = 250Hz drive V = 400V dc V = 150V D f at rise time ~ 550Hz drive f = 300Hz drive V = 350V dc V = 200V D f ~ 120Hz 100Hz/div. drive f = 400Hz drive V = 250V dc V = 350V S1-G for TTC meeting Global Design Effort

  6. Compensation of Lorentz detuning (A1) A1/MHI-05 20 MV/m A1/MHI-05 (Slide Jack) 20 MV/m drive f = 200Hz drive V = 330V dc V = 30V FB/on, Piezo/off FB/on, Piezo/on pre-det. ~ 250Hz drive f = 250Hz drive V = 300V dc V = 30V D f at rise time ~ 270Hz drive f = 300Hz drive V = 200V dc V = 100V D f ~ 50Hz 50Hz/div. drive f = 400Hz drive V = 200V dc V = 100V S1-G for TTC meeting Global Design Effort

  7. Compensation of Lorentz detuning (C4) C4/Z109 29 MV/m C4/Z109 (Saclay Tuner) 29 MV/m drive f = 200Hz drive V = 130V dc V = 4V FB/on, Piezo/off FB/on, Piezo/on D f at rise time ~ 400Hz pre-det. ~ 180Hz drive f = 250Hz drive V = 120V dc V = 5V drive f = 300Hz drive V = 106V dc V = 16V D f ~ 500Hz 50Hz/div. drive f = 400Hz drive V = 94V dc V = 43V S1-G for TTC meeting Global Design Effort

  8. Compensation of Lorentz detuning (C3) C3/Z108 18 MV/m C3/Z108 (Saclay Tuner) 18 MV/m FB/on, Piezo/off FB/on, Piezo/on drive f = 200Hz drive V = 70V dc V = 4V pre-det. ~ 50Hz drive f = 250Hz drive V = 60V dc V = 30V D f at rise time ~ 150Hz drive f = 300Hz drive V = 56V dc V = 14V D f ~ 250Hz 50Hz/div. drive f = 400Hz drive V = 50V dc V = 24V S1-G for TTC meeting Global Design Effort

  9. Compensation of Lorentz detuning (C1) C1/AES004 25.6 MV/m C1/AES004 (Blade Tuner) 25.6 MV/m drive f = 200Hz drive V = 100V dc V = 2V FB/on, Piezo/off FB/on, Piezo/on pre-det. ~ 180Hz drive f = 250Hz drive V = 100V dc V = 4V D f at rise time ~ 320Hz drive f = 300Hz drive V = 80V dc V = 24V D f ~ 300Hz 50Hz/div. drive f = 400Hz drive V = 70V dc V = 38V S1-G for TTC meeting Global Design Effort

  10. Summary • Compensation of Lorentz force detuning by • KEK piezo tuner control system was • successfully demonstrated in three types of • piezo tuners ( Slide-jack tuner, Saclay tuner • and Blade tuner). S1-G for TTC meeting Global Design Effort

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