booster dampers update
DESCRIPTION
Booster Dampers Update. Nathan Eddy PIP Meeting 4/30/14. Transverse Damper. RF Lock – No loss of lock since “fix” New Firmware with Timofey Zolkin’s n-turn filter coefficients installed Testing and verification underway Basic Timing, Filter Algorithm, Tune Monitor. Longitudinal Damper. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Booster Dampers Update](https://reader035.vdocuments.site/reader035/viewer/2022062722/56813b29550346895da3ec28/html5/thumbnails/1.jpg)
Booster Dampers Update
Nathan EddyPIP Meeting
4/30/14
![Page 2: Booster Dampers Update](https://reader035.vdocuments.site/reader035/viewer/2022062722/56813b29550346895da3ec28/html5/thumbnails/2.jpg)
Transverse Damper
• RF Lock – No loss of lock since “fix”• New Firmware with Timofey Zolkin’s n-turn filter coefficients
installed
• Testing and verification underway– Basic Timing, Filter Algorithm, Tune Monitor
![Page 3: Booster Dampers Update](https://reader035.vdocuments.site/reader035/viewer/2022062722/56813b29550346895da3ec28/html5/thumbnails/3.jpg)
Longitudinal Damper
![Page 4: Booster Dampers Update](https://reader035.vdocuments.site/reader035/viewer/2022062722/56813b29550346895da3ec28/html5/thumbnails/4.jpg)
LD Block Diagram
ADC
x
x
CICDec
CICDec
BP FIR-45°
BP FIR+45°
Mɸ
Mɸ
CICInterp
CICInterp
x
x
Σ DAC
+
+ -
Same NCO generates sin, cos for I,Q mixing NCO frequency is centered on rev harmonic of interestSet CIC decimation so that notches on RevFBP FIR is a N tap filter for signal conditioningMɸ correspond to programmable magnitude/phase shiftFor output sum, +/- select upper/lower sideband (SSB) Will also suppress carrierNote, this same firmware design can be used for “direct sideband” detection by adjusting the NCO frequency and modifying the FIR filter coefficients
NCOcos
NCOsin
NCOsin
NCOcos
4*RF ~211MS/s
4*RF ~211MS/s
~25KHz
![Page 5: Booster Dampers Update](https://reader035.vdocuments.site/reader035/viewer/2022062722/56813b29550346895da3ec28/html5/thumbnails/5.jpg)
Test Installation
WCMPhase PickupMode 1
DigitalDamper
Mode N
NotchFilter
BPFilter
Pickup
RF RefTCLK
RF Ref
![Page 6: Booster Dampers Update](https://reader035.vdocuments.site/reader035/viewer/2022062722/56813b29550346895da3ec28/html5/thumbnails/6.jpg)
RAW Data
MODE 50
15ms
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RAW Data ZoomAfter 90MHz LP Filter
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Mode 50 after DDC
![Page 9: Booster Dampers Update](https://reader035.vdocuments.site/reader035/viewer/2022062722/56813b29550346895da3ec28/html5/thumbnails/9.jpg)
Import into Matlab
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Simple Matlab Simulation
![Page 11: Booster Dampers Update](https://reader035.vdocuments.site/reader035/viewer/2022062722/56813b29550346895da3ec28/html5/thumbnails/11.jpg)
Summary
ADC
x
x
CICDec
CICDec
BP FIR-45°
BP FIR+45°
Mɸ
Mɸ
CICInterp
CICInterp
x
x
Σ DAC
+
+ -
ADC through CICdec implemented and tested in BoosterCICint and DAC tested on benchDesign as shown under checkout right now Expect to begin testing in Booster this week
To Do List Develop complete Matlab Simulation Allow ability to optimize filtering Implement Beam Transfer Function Measurement for open and closed loop measurements Straightforward method to optimize gain/phase Demonstrate damping on single Booster Mode
NCOcos
NCOsin
NCOsin
NCOcos
4*RF ~211MS/s
4*RF ~211MS/s
~25KHz