1. S1-G for TTC meeting Global Design Effort
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)
E. KAKO (KEK) ' Feb. 14
S1-G for TTC meeting Global Design Effort

2. S1-G for TTC meeting Global Design Effort
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)
E. KAKO (KEK) ' Feb. 14
S1-G for TTC meeting Global Design Effort

3. S1-G for TTC meeting Global Design Effort
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
E. KAKO (KEK) ' Feb. 14
S1-G for TTC meeting Global Design Effort

4. S1-G for TTC meeting Global Design Effort
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
E. KAKO (KEK) ' Feb. 14
S1-G for TTC meeting Global Design Effort

5. S1-G for TTC meeting Global Design Effort
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
E. KAKO (KEK) ' Feb. 14
S1-G for TTC meeting Global Design Effort

6. S1-G for TTC meeting Global Design Effort
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
E. KAKO (KEK) ' Feb. 14
S1-G for TTC meeting Global Design Effort

7. S1-G for TTC meeting Global Design Effort
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
E. KAKO (KEK) ' Feb. 14
S1-G for TTC meeting Global Design Effort

8. S1-G for TTC meeting Global Design Effort
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
E. KAKO (KEK) ' Feb. 14
S1-G for TTC meeting Global Design Effort

9. S1-G for TTC meeting Global Design Effort
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
E. KAKO (KEK) ' Feb. 14
S1-G for TTC meeting Global Design Effort

10. S1-G for TTC meeting Global Design Effort
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).
E. KAKO (KEK) ' Feb. 14
S1-G for TTC meeting Global Design Effort