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Requirements for diagnostic for E U-XFEL

Requirements for diagnostic for E U-XFEL. Tomasz Jeżyński. Technical University of Łódź , Poland Deutsches Elektronen-Synchrotron, Germany. Outlook. EU-XFEL VUV-FEL Proposal for diagnostic. EU- XFEL – Light Source. EU-XFEL. ~2000 superconductive cavities Length : 2100 m

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Requirements for diagnostic for E U-XFEL

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  1. Requirements for diagnostic for EU-XFEL Tomasz Jeżyński Technical University of Łódź, Poland Deutsches Elektronen-Synchrotron, Germany

  2. Outlook • EU-XFEL • VUV-FEL • Proposal for diagnostic Tomasz Jeżyński

  3. EU-XFEL – Light Source Tomasz Jeżyński

  4. EU-XFEL • ~2000 superconductive cavities • Length : 2100 m • Electrical field : 30 MV/m • Required field stability : 10-5 in amplitude, 0.01° in phase • Continuous operation is required one maintenance day per month Tomasz Jeżyński

  5. VUV-FEL - the pilot facility for the XFEL • 260 m long (tunel 100 m) • 5 Kyro Modules • 40 superconductive cavities • TESLA technology • Development platform for XFEL Tomasz Jeżyński

  6. Measurements points in LLRF Tomasz Jeżyński

  7. VS and signal from single cavity Tomasz Jeżyński

  8. Mean & std. of measured signals (VS) Tomasz Jeżyński

  9. Field Phase in Vector Sum Tomasz Jeżyński

  10. LLRF in VUV-FEL Tomasz Jeżyński

  11. Diagnostic for VUV-FEL Tomasz Jeżyński

  12. Diagnostic of LLRF - Goals • Provide continuous operation of LLRF System • Reduce maintenance cost Tomasz Jeżyński

  13. What we know about EU-XFEL ? • What we know? • Technology is unknown • Structure (distributed? links?) • Algorithms (under development) • Diagnostic have to be: • Cheap • Flexible (easy modification, extend...) • Integrated with system • But, failures of diagnostic cannot stop operation Tomasz Jeżyński

  14. Proposal for diagnostic for EU-XFEL • Monitoring • Diagnostic • Calibration Tomasz Jeżyński

  15. Monitoring • Error detection • Timing signals (synchronization, phase) • Pfor & Pref • Probes • Field stability (RMS, p-p, ...) • Detuning • Loaded Q • Limits of set value • ... Tomasz Jeżyński

  16. Diagnostic • Detect malfunction • Locate damage hardware • Perform components tests • ADCs, DACs • Interfaces • Memory, DSP blocks ... • Timing distribution • ... Tomasz Jeżyński

  17. Calibration • Timing • Correction of parameters • Probes • Downconverters • ADCs & DACs offset • ... • Pizo tuning • ... Tomasz Jeżyński

  18. ADC Board and diagostic element Tomasz Jeżyński

  19. Board with integrated diagnostic elements Tomasz Jeżyński

  20. Future Downconverter Tomasz Jeżyński

  21. Recomendation • Provide possibility to read data form different points of the system • Design the universal diagnostic interface and implement it to all electronic boards • Integrate diagnostic elements in control system • Sources of test signals • RF Switches • ... • Provide self diagnostic for all boards Tomasz Jeżyński

  22. Conclusion It is possible to predict operation interrupt before it happens (?) The diagnostic system should be integrated with control system and hardware Base on experience from TTF and VUV-FEL the diagnostic system will decrease maintenance cost Tomasz Jeżyński

  23. END Tomasz Jeżyński

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