The paper reports on studies and results about the implementation of a novel type of Cryogenic Current Comparator (CCC), designed for work at liquid nitrogen temperature. The studies are particularly aimed at the realization of the CCC shield by means of an extended thick film of the YBCO high-temperature superconductor (HTS), deposited onto a metallic substrate with the HVOF technique. Recent ...

In this paper we discuss the main features of the Residence Times Difference Fluxgate Magnetometer. A low-cost technology, negligible onboard power requirements and the intrinsic digital form of the readout signal are the main advantages of the proposed strategy. Results obtained show the possibility to realise low-cost devices exploiting Printed Circuit Board (PCB) technology for applications ...

Anisotropic (AMR) and Giant (GMR) Magnetoresistive sensors are attractive for industrial applications, as they are more sensitive and stable than Hall sensors. Their performance can be improved by AC excitation: flipping for AMR and AC biasing for GMR. AC excitation lowers the hysteresis, reduces the offset and in some cases also decreases sensor noise. The sensitivity to perpendicular fields i...

This paper describes a prototype of an inertial navigation system for use in mobile land vehicles, such as cars or mobile robots. The complete system is composed by sensors, their mechanical mount and cabling, these connect to a PC card with local processing and memory, based on a Intel 80C196KC microcontroller. The sensors used were a piezoelectric vibrating gyroscope, two silicon acceleromete...

We describe a direct gradiometer using optical pumping with opposite circular polarization in two ${}^{87}\mathrm{Rb}$ atomic ensembles within single multipass cell. A far-detuned probe laser undergoes near-zero paramagnetic Faraday rotation due to the intrinsic subtraction of contributions exceeding 3.5 rad from highly polarized ensembles. develop analysis methods for signal and measure sensit...