19–21 Oct 2026
Frascati
UTC timezone
The deadline for the abstracts submission has been delayed to July 20, 2026

Advanced diagnostic techniques for a 4 ppm measurement of the antihydrogen Ground-State Hyperfine Splitting in the ALPHA experiment at CERN

20 Oct 2026, 10:20
20m
Sala Bruno Brunelli (Frascati)

Sala Bruno Brunelli

Frascati

Building F23 Via Enrico Fermi 45, 00044 Frascati, Rome
Oral Precision measurements in fundamental physics Precision Measurement

Speaker

Germano Bonomi (University of Brescia and INFN Pavia)

Description

The ALPHA Collaboration recently determined the antihydrogen ground-state hyperfine splitting to a relative precision of 4 ppm, an improvement of two orders of magnitude.
Achieving this leap required advanced in situ diagnostic and magnetic field characterization methodologies to mitigate the extreme sensitivities of driving resonant microwave transitions within a deep magnetic minimum trap. The talk will focus on the critical in situ diagnostic strategies and real-time magnetic field characterization techniques developed to track environmental drifts and map the trap's landscape.

Author

Germano Bonomi (University of Brescia and INFN Pavia)

Presentation materials

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