Speaker
Description
Accurate bunch charge measurement is essential for beam diagnostics in modern accelerators, particularly for ultra-high dose rate (UHDR) and FLASH applications involving short pulse durations. This work presents a comprehensive calibration and performance evaluation of an integrating current transformer (ICT) coupled with a high-speed digitizer for non-intercepting charge measurements.
A complete signal processing framework is developed, including ADC calibration, baseline correction, adaptive pulse boundary detection, and numerical integration. Three pulse detection methods full width at half maximum (FWHM), threshold (10–90%), and near-zero crossing are implemented, tested, and systematically compared within a unified analysis approach.
A pulse-width-dependent deviation in reconstructed charge is experimentally observed and attributed to the finite bandwidth of the ICT. An empirical correction model is derived, enabling accurate charge reconstruction for different pulse durations.
Overall, this work establishes performance limits for ICT-based diagnostics and provides a robust framework for accurate charge reconstruction in compact accelerators for FLASH applications.
Funding Agency
The work was supported by funding from the European Union Next Generation EU through the Italian Ministry of University and Research under PNRR- M4C2-I1.3 Project PE-00000019 “HEAL ITALIA” to Sapienza
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| Supervisor's name | Enrica Chiadroni |
| Supervisor's email | enrica.chiadroni@uniroma1.it |
| Paper submission software | MSWord |