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CNAO in Pavia is one of the first centers for hadrontherapy in Europe, treating patients since 2011. The center represents an international reference for machines specifically designed for this purpose. The synchrotron BPM electronics currently relies on analog boards that compute the ratio between difference and sum signals from the shoebox pickup, with signals subsequently acquired by digital cards. Although the system operates reliably, it provides beam position measurements at a rate of only 1 kHz, while the revolution frequency ranges from 0.5 to 3 MHz. Libera Hadron, developed by Instrumentation Technologies, is a well-established and widely proven instrument, extensively used in large accelerator facilities as well as in several smaller installations. The system is capable of acquiring pickup signals with 250 MSps ADCs and performing advanced beam diagnostics, including bunch-by-bunch and averaged position measurements, as well as FFT-based analysis for tune determination. A Libera Hadron unit was tested at CNAO, where turn-by-turn beam position data were analyzed at different energies and intensities using proton, helium, and carbon ion beams. This paper presents the results obtained with the Libera Hadron system.
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