IBIC2026 - 15th International Beam Instrumentation Conference

Session

MC06: Feedback Systems and Beam Stability

TUT

1 Sept 2026, 09:00

Rainbow Theatre (Whistler Conference Centre)

25. Experimental demonstration of emittance coupling control via an AC skew quadrupole driven at the difference resonance (Qx-Qy) (TURT01)

Michele Carlà (ALBA Synchrotron (Spain))

01/09/2026, 09:00

MC06: Feedback Systems and Beam Stability

Invited Oral Presentation

Short Touschek lifetime is a critical aspect of low emittance electron storage rings. To ensure an acceptable lifetime, many new machine designs rely on some kind of blowup of the vertical emittance. In view of the upgrade of the ALBA storage ring, it was decided to explore the possibility to use betatron coupling to increase the vertical emittance. To avoid the constrain of operating onto the...

9. Distributed acoustic sensing for accelerator stability and environmental diagnostics (TURT02)

Markus Hoffmann (Deutsches Elektronen-Synchrotron DESY)

01/09/2026, 09:30

MC06: Feedback Systems and Beam Stability

Invited Oral Presentation

The stability of modern accelerator facilities depends on precise monitoring of environmental vibrations and ground motion, which can affect beam orbit, arrival time stability, and beam instrumentation. Distributed Acoustic Sensing (DAS) transforms standard optical fibers into dense arrays of strain sensors, providing high spatial and temporal resolution over tens of kilometers.
At DESY, a...

142. Nondestructive beam energy spread diagnostics for RF phase feedback in linear accelerators (TURT03)

Qian Wang (University of Science and Technology of China)

01/09/2026, 10:00

MC06: Feedback Systems and Beam Stability

Contributed Oral Presentation

For the requirements of RF phase stability in linear accelerators, especially in high-repetition-rate FELs, phase feedback techniques are important. Compared with direct RF field measurements, methods based on beam energy spread measurements can reflect the impact of RF perturbations on beam quality and are more suitable for feedback. Conventional screen-based destructive measurements are not...

123. Real-time direct sampling bunch-by-bunch arrival time measurement on RF systems-on-chip for multibunch feedbacks (TURT05)

Boris Keil (Paul Scherrer Institute)

01/09/2026, 11:40

MC06: Feedback Systems and Beam Stability

Contributed Oral Presentation

Traditional longitudinal bunch‑by‑bunch feedback systems use analog mixers to down‑convert GHz‑range RF signals to baseband, where the mixer output is approximately proportional to the bunch charge and the deviation from the nominal arrival time. We present an alternative approach that determines the beam arrival time through time‑domain processing of directly sampled BPM signals on an RFSoC....