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Oct 12 – 16, 2025
Newport News Marriott at City Center
US/Eastern timezone

Upgrade of the Barrier Bucket LLRF system for High-Intensity, Low-Loss Multi-Turn Extraction at the CERN PS

Oct 15, 2025, 11:05 AM
20m
Newport News Marriott at City Center

Newport News Marriott at City Center

740 Town Center Drive, Newport News, Virginia 23606
Oral or Poster

Speaker

Toma Gavric (CERN)

Description

The CERN Proton Synchrotron (PS) LLRF system is one of the oldest in operation at CERN. To meet the growing demands of high-intensity fixed-target experiments at CERN, a sophisticated beam manipulation technique combining barrier-bucket radiofrequency gymnastics with Multi-Turn Extraction (MTE) has been developed and successfully implemented in the PS.
The newly developed system enables cycle to cycle updates off the turn-synchronous voltage waveform applied to the wide-band Finemet cavity. It allows both intra-cycle manipulations and synchronization with respect to the Super Proton Synchrotron (SPS) extraction reference. These features have been fully tested with both the MTE and ion beams, successfully demonstrating synchronous barrier bucket extraction and non-integer harmonic batch compression.
This contribution summarizes the upgrades to the Finemet cavity controller, showing the new system architecture and demonstrating its operation with beams in the machine.

Abstract Category Measurement and Control

Author

Toma Gavric (CERN)

Co-authors

Benjamin Woolley (CERN) Heiko Damerau (CERN) Mr Mihaly Vadai (SolidWatts) Mrs Ylenia Brischetto (CERN)

Presentation materials

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