Measurement of nanoampere beam intensities at FAIR

January 20, 2026JACOWOpen Access

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Key Points

The aim is to measure the nanoampere current levels of particle beams using advanced technologies.
Utilized cryogenic current comparator (CCC) based on a superconducting magnetometer (SQUID).
Developed superconducting magnetic shielding to minimize external disturbance.
Housed the CCC in a vibration-damped helium bath cryostat.
Operated in stand-alone mode to achieve continuous functioning for six months.
Achieved nanoampere resolution for particle beam intensities.
Demonstrated the best performance with the Dual Core Cryogenic Current Comparator version.
Established stable operation during multiple beamtimes in CRYRING and SIS18.

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Reports measurement of nanoampere beam intensities in particle beams, highlighting advancements in detection technology.

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Sieber et al. (2026) studied this question.

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