A high precision magnetometer based on pulsed NMR

A magnetometer based on pulsed proton magnetic resonance has been developed and constructed. The system will be employed for an accurate measurement of the absolute magnetic field in the region of 1.45 T in a precision experiment on the muonʹs anomalous magnetic moment at the Brookhaven National Laboratory (BNL, USA), where a knowledge of the magnetic field is required with 1 × 10−7 relative accuracy. The performance of the magnetometer has been tested in a large bore superconducting magnet and a precision of one part in 108 was achieved.