EuCard WP10.6 – LLRF at FLASH

EuCard WP10.6 – LLRF at FLASH Development of FastADC Cardfor the LLRF System SamerBouHabib

Agenda • Maingoal and applications • Functionin LLRF • Hardware • System concept • MeasurementResult • Futureplans

Maingoal and Applications • Fast ADC testingfor LLRF • Applications • DirectSampling (IQ detection) • Digital phasedetection • Amplitudedetection

LLRF at FLASH

LLRF system withDWCs 8 x cavity Master Oscillator klystron RF powertransmition A & F to LO PS Timing 8x transmitted Vector modulator 8x forward and reflectedpower DAC DSP/FPGA 8 x 8 x DAC Digital/analog feedbackcontroller LO LO LO LO LO LO LO LO LO LO LO LO ADC ADC ADC ADC ADC ADC ADC ADC ADC ADC ADC ADC Down-converters 8 x

LLRF system with Fast ADCs Master Oscillator 8 x cavity klystron RF powertransmition A & F ADC ADC ADC PS 8 x 8 x 8 x Timing ADC ADC ADC 8x transmitted Vector modulator 8x forward and reflectedpower DAC DSP/FPGA DAC Digital/analog feedbackcontroller

Benefits • ReplacingDWCs and data-analyzingboardswith single design • Lower cost • RemovingproblemswithDWCs (non-linearities and drifts) • Eliminatingcomplex LO generation

Hardware • Actual • 2 x ATCA board • 12-bit 500 MSPS 2.3 GHz BW • 14-bit 400 MSPS 1.4 GHz BW • Future • uTCAVersion • Amplitudedetector for ADCM • Opticalsignalsphase measurement

System Concept for Actual Hardware Processordaughterboard Diagnostics ExternalInterfaces FPGA (IQ detection, Pre-processing) USER Trigger 8 x ADC Dopasowanie ADC Dopasowanie ADC ATCA Dopasowanie ADC Dopasowanie ADC Dopasowanie ADC Dopasowanie ADC 1.3 GHzSignal Dopasowanie ADC Matching Pamiec SRAM Pamiec SRAM Pamiec SRAM SRAM Clocksynthesis and distribution Referenceclock

PCB

MeasurementResult • Amplitudestability~2e-4 RF input To PC CLK reference • IQdetection

FuturePlans • Finishtests for the ATCA boards • Test performance and effect on FLASH • Prepareboards for thenewstandards (uTCA) / futureapplications

Thankyou for yourattention S.BouHabib@stud.elka.pw.edu.pl

EuCard WP10.6 – LLRF at FLASH