US 12,204,000 B2
Precision magnetometer
Nicolo′ Crescini, Frascati (IT)
Assigned to ISTITUTO NAZIONALE DI FISICA NUCLEARE (I.N.F.N.), Frascati (IT)
Appl. No. 17/925,397
Filed by ISTITUTO NAZIONALE DI FISICA NUCLEARE (I.N.F.N.), Frascati (IT)
PCT Filed May 21, 2021, PCT No. PCT/IB2021/054426
§ 371(c)(1), (2) Date Nov. 15, 2022,
PCT Pub. No. WO2021/234656, PCT Pub. Date Nov. 25, 2021.
Claims priority of application No. 102020000012016 (IT), filed on May 22, 2020.
Prior Publication US 2023/0184850 A1, Jun. 15, 2023
Int. Cl. G01R 33/00 (2006.01); G01R 33/02 (2006.01)
CPC G01R 33/0017 (2013.01) [G01R 33/02 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A precision magnetometer comprising:
a volume of sensitive material;
a resonator within which the volume of sensitive material is placed;
at least a magnetic element for generating a static-type magnetic field B0;
a field transducer for transmitting a radiofrequency signal to the sensitive material;
a system for generating and transmitting a pump signal to the resonator; and
a low noise amplifier for amplifying the radiofrequency signal; and
a calibration system arranged to couple with the transducer, the calibration system comprising:
a radiofrequency signal generator;
a load for reading the current circulating in a calibration coil; and
an oscilloscope for measuring the frequency and the amplitude of a calibration signal.