Erlangen 2026 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 44: Instrumentation VIII
HK 44.7: Talk
Thursday, March 19, 2026, 17:45–18:00, PHIL A 301
Electromagnetic Characterization and Performance Analysis of Button Beam Position Monitors - cSTART — •Anjana Madhusoodhanan Nair PK1,2, Arnulf Quadt1, Christoph Quitmann2, Dima El Khechen3, Jakob Krämer2, and Nigel John Smale3 — 1II. Physikalisches Institut Georg-August-Universität Göttingen — 2RI Research Instruments GmbH, Bergisch Gladbach — 3Karlsruhe Institute of Technology
Button-type Beam Position Monitors (BPMs) are a key element of the beam diagnostics system for the cSTART (compact STorage ring for Accelerator Research and Technology) project, where precise beam position measurements are essential for stable operation. This study presents the electromagnetic characterization and performance evaluation of the cSTART button BPM design through a combination of numerical simulations and experimental validation, including CST Particle Studio simulations of signal formation, button capacitance, frequency response, and wakefield effects, as well as Time Domain Reflectometry measurements and beam-based tests at the FLUTE facility with controlled beam offsets. The results demonstrate the accuracy, limitations, and suitability of the BPM system for cSTART operation and contribute to the optimization of beam diagnostics in compact storage ring accelerators.
Keywords: cSTART; Button BPM; CST; TDR