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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 - PowerPoint PPT Presentation
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E. KAKO (KEK) 2011' Feb. 14 S1-G for TTC meeting
Global Design Effort
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)
E. KAKO (KEK) 2011' Feb. 14 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 DESY/FNAL cavities (+200V)
Piezo driver for KEK cavities (+1000V)
E. KAKO (KEK) 2011' Feb. 14 S1-G for TTC meeting
Global Design Effort
3
Parameters of Piezo drive pulse
delay time
dc V
drive V
drive frequency (Hz)
Single pulse of inverse cosine waveform
Eacc
Pinput
t
Pre-detuning by motor tuner
control panel
Piezo drive pulse
RF Feedback / ON
E. KAKO (KEK) 2011' Feb. 14 S1-G for TTC meeting
Global Design Effort
4
Compensation of Lorentz detuning (A2)
A2/MHI-0638 MV/m
FB/on, Piezo/off
f ~ 200Hz
A2/MHI-06 (Slide Jack)38 MV/m
FB/on, Piezo/on
pre-det. ~ 600Hzdrive f = 315Hzdrive V = 400V
dc V = 100V
drive f = 200Hzdrive V = 400V
dc V = 140V
drive f = 300Hzdrive V = 400V
dc V = 35V
drive f = 400Hzdrive V = 300V
dc V = 120V
f at rise time~ 700Hz
100Hz/div.
E. KAKO (KEK) 2011' Feb. 14 S1-G for TTC meeting
Global Design Effort
5
Compensation of Lorentz detuning (A3)
A3/MHI-0732.5 MV/mFB/on, Piezo/off
f ~ 120Hz
A3/MHI-07 (Slide-Jack)32.5 MV/m
FB/on, Piezo/on
pre-det. ~ 500Hzdrive f = 250Hzdrive V = 400V
dc V = 150V
drive f = 200Hzdrive V = 500V
dc V = 30V
drive f = 300Hzdrive V = 350V
dc V = 200V
drive f = 400Hzdrive V = 250V
dc V = 350V
f at rise time~ 550Hz
100Hz/div.
E. KAKO (KEK) 2011' Feb. 14 S1-G for TTC meeting
Global Design Effort
6
Compensation of Lorentz detuning (A1)
A1/MHI-0520 MV/m
FB/on, Piezo/off
f ~ 50Hz
A1/MHI-05 (Slide Jack)20 MV/m
FB/on, Piezo/on
pre-det. ~ 250Hzdrive f = 250Hzdrive V = 300V
dc V = 30V
50Hz/div.
drive f = 200Hzdrive V = 330V
dc V = 30V
drive f = 300Hzdrive V = 200V
dc V = 100V
drive f = 400Hzdrive V = 200V
dc V = 100V
f at rise time~ 270Hz
E. KAKO (KEK) 2011' Feb. 14 S1-G for TTC meeting
Global Design Effort
7
Compensation of Lorentz detuning (C4)
C4/Z10929 MV/m
FB/on, Piezo/off
f ~ 500Hz
C4/Z109 (Saclay Tuner)29 MV/m
FB/on, Piezo/on
pre-det. ~ 180Hzdrive f = 250Hzdrive V = 120V
dc V = 5V
drive f = 200Hzdrive V = 130V
dc V = 4V
drive f = 300Hzdrive V = 106V
dc V = 16V
drive f = 400Hzdrive V = 94V
dc V = 43V
f at rise time ~ 400Hz
50Hz/div.
E. KAKO (KEK) 2011' Feb. 14 S1-G for TTC meeting
Global Design Effort
8
Compensation of Lorentz detuning (C3)
C3/Z10818 MV/m
FB/on, Piezo/off
f ~ 250Hz
C3/Z108 (Saclay Tuner)18 MV/m
FB/on, Piezo/on
pre-det. ~ 50Hzdrive f = 250Hz
drive V = 60Vdc V = 30V
drive f = 200Hzdrive V = 70V
dc V = 4V
drive f = 300Hzdrive V = 56V
dc V = 14V
drive f = 400Hzdrive V = 50V
dc V = 24V
f at rise time ~ 150Hz
50Hz/div.
E. KAKO (KEK) 2011' Feb. 14 S1-G for TTC meeting
Global Design Effort
9
Compensation of Lorentz detuning (C1)
C1/AES00425.6 MV/mFB/on, Piezo/off
f ~ 300Hz
C1/AES004 (Blade Tuner)25.6 MV/m
FB/on, Piezo/on
pre-det. ~ 180Hzdrive f = 250Hzdrive V = 100V
dc V = 4V
drive f = 200Hzdrive V = 100V
dc V = 2V
drive f = 300Hzdrive V = 80V
dc V = 24V
drive f = 400Hzdrive V = 70V
dc V = 38V
f at rise time ~ 320Hz
50Hz/div.
E. KAKO (KEK) 2011' Feb. 14 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).
