uTCA / Stand-alone LLRF

Digital RF stabilization system

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Our digital RF stabilization system is available in uTCA and stand-alone form-factors for best in-class LLRF solutions. Our fully digital RF systems are designed to offer accurate control of electromagnetic fields inside any accelerating cavity and play a key role in the longitudinal beam performance of any particle accelerator. Our solution is tailored to customer needs and takes full advantage of our previous expertise on PCIe-S LLRF equipment, now working with the most advanced crate technologies.

Main performance highlights

• Amplitude stability: 0.1% RMS

• Phase stability: 0.1 degrees RMS

• Amplitude precision: 0.01% RMS

• Phase precision: 0.01 degree RMS

• Total feedback loop delay: < 0.95us

• RF added jitter: 142 fs RMS (1Hz-1MHz)

*measured at 175MHz

APPLICATION NOTES

  • Pico Second Timing for HEP (High Energy Physics)

    In this note, we present the timing system architecture currently under development by Safran for the distribution of synchronized triggers.

    View Note

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FEATURES

  • Amplitude and phase control in continuous wave (CW) or pulsed.
  • Real-time monitoring of RF signals, with live computation of detune frequency for resonance controls.
  • Opened loop or closed loop mode control of amplitude and frequency or phase.
  • Pulse shaping feature for smoothing RF pulses
  • Feedforward for beam loading compensation
  • Real-time monitoring of RF signals (Incident, reflected, cavity field …)
  • Provides information for step tuner motors
  • VSWR (arcing/reflection) detection and handling events: when it receives a reflection signal above a user-defined threshold, it shuts off RF output for a time period also defined by the user.
  • Fast output interlock system (Machine protection)
  • EPICS/TANGO control system support and easy user interface.
  • Postmortem analysis with selectable event triggers and configurable capture parameters. MATLAB, python, CSS/BOY libraries for post processing.
  • Compatible with White-Rabbit and IEEE-1588 protocols. Seamless integration into the Timing system for triggering and timestamping control operations.

SPECS

  • Up to 2 LLRF channels on the same box
  • Up to 2 configurable RF output
  • Up to 7 configurable RF inputs
  • One Frequency reference input
  • 7 configurable input/outputs TTL connectors
  • It can be mounted on two different configurations according to user needs:
    • Fits into a stand-alone 19 inch rack
    • Fits into a 19 inch rack using 2U height and integrated into a uTCA backplane

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Timing - Control and Diagnostic Systems