Speaker
Description
Non-destructive bunch characterization is essential across a wide range of accelerator applications. Precise measurement of bunch charge is critical for correlating sample response with delivered dose, while femtosecond-level time-of-arrival (TOA) precision is paramount for resolving transient structural dynamics in pump-probe experiments. Cavity-based beam monitors, which exploit wake field excitation by the beam, offer highly sensitive single-shot access to both observables. Recent experiments at UCLA PEGASUS have demonstrated sub-fC charge sensitivity with ongoing work to understand the theoretical and practical limits of both charge and TOA measurements. To extend these capabilities toward real-time operation, the Beam Arrival Monitor (BAM) cavity is being integrated with an RFSoC-based digital LLRF platform, combining an FPGA, multi-core ARM processor, and high-speed ADCs and DACs on a single chip. This architecture enables multichannel processing, low-latency deterministic feedback, and a pathway to deploying physics-informed machine learning models for noise suppression and drift correction, laying the groundwork for robust sub-10 fs synchronization and high accuracy charge characterization in next-generation experiments.
| Working group | WG5 |
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