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Arshdeep Singh (Brookhaven National Laboratory)10/13/26, 9:45 AMControl Architecture and StrategiesOral
The Hadron Storage Ring (HSR) of the Electron-Ion Collider (EIC) will perform a 1 to 4 bunch split to reach its luminosity goals. After the bunch splitting, the beam is compressed by 197 MHz and 591 MHz RF systems. It is important that, during the splitting process, the voltage on the compression cavities stays close to 0 V to prevent any detrimental effects on the beam emittance and...
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Birk Emil Karlsen-Baeck (CERN)10/13/26, 10:15 AMControl Loop Modeling, Tuning and OptimizationOral
Capturing the high-intensity proton beams in the HL-LHC era will be challenging for the RF system. The increase of the bunch intensity to $2.3 \times 10^{11}$ protons per bunch will require significantly more RF power for beam-loading compensation. At the same time, a higher RF voltage must be provided to capture and retain the beam at the injection plateau. Together, these two factors will...
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Leonard Thiele (University of Rostock, CERN)10/13/26, 11:10 AMControl Loop Modeling, Tuning and OptimizationOral
The proposed muon collider complex is designed to accelerate high-intensity muon bunches to energies of several TeV. Due to the muon's short rest-frame lifetime, acceleration must be performed quickly. Thousands of superconducting cavities are required for the chain of rapid-cycling synchrotrons. Such large RF systems in this high-energy acceleration section pose the challenge of a very high...
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Jiayi Peng (Institute of Modern Physics)10/13/26, 1:55 PMControl Loop Modeling, Tuning and OptimizationOral
Superconducting radio-frequency (SRF) cavities with high loaded quality factors are particularly susceptible to ponderomotive instabilities caused by the interaction between RF fields and mechanical vibrations. Predicting and suppressing these instabilities is essential for reliable operation of high-gradient continuous-wave accelerators. To address this issue, we have developed a practical...
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Zheqiao Geng (PSI - Paul Scherrer Institut)10/13/26, 2:25 PMControl Loop Modeling, Tuning and OptimizationOral
PSI is investigating a SwissFEL extension with a new hard X-ray beamline, Porthos, in addition to the existing hard X-ray (Aramis) and soft X-ray (Athos) beamlines. To allow all three beam lines to operate simultaneously at the maximum RF pulse repetition rate (100 Hz), three bunches must be accelerated in each RF pulse. The three bunches will be separated by 21 ns. The accelerating voltages...
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Idris Kempf (University of Oxford)10/13/26, 2:55 PMControl Architecture and StrategiesOral
Next-generation storage-ring light sources combine higher-bandwidth fast orbit feedback (FOFB) systems with synchrotron frequencies that may lie within the FOFB bandwidth. Coupled-bunch mode-zero oscillations driven by RF phase and amplitude noise can produce horizontal orbit motion within the controllable frequency range. Existing work exploits the near orthogonality between the dispersion...
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Beñat González (University of the Basque Country UPV/EHU)10/14/26, 9:05 AMSystem IdentificationOral
Resonant cavity models traditionally used for control design suffer from oversimplification, failing to capture spatial actuation effects or geometric imperfections. To address this limitation, we present a methodology for deriving cavity models via equivalent circuit representations. Most accelerator cavities (such as Tesla structures, RFQs, or DTLs) can be decomposed into elemental units...
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Arshdeep Singh (Brookhaven National Laboratory)10/14/26, 9:35 AMPoster
The dynamics of an RF cavity control system can be modeled with a great deal of accuracy. This includes the dynamics of the cavity, beam+cavity interactions, microphonics, Lorentz-Force Detuning, the field control loop, and the tuning control loop. A time-domain simulator has been developed in Python to study the behavior of a complete RF control system with respect to varying feedback...
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Andy Benwell (SLAC National Accelerator Laboratory)10/15/26, 2:45 PMOral
Various advanced resonance control techniques have been developed and deployed at accelerator facilities to mitigate mechanical detuning in high-Q Superconducting Radio-Frequency (SRF) cavities. During the LCLS-II project, several of these approaches were evaluated and a real-time adaptive Narrowband Active Noise Cancellation (NANC) algorithm, developed through a collaboration between SLAC,...
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