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In particle accelerators, “field markers” provide a digital trigger when the magnetic field crosses a given threshold. In this paper, the metrological characterization of a magnetic field marker, based on a ferrimagnetic resonance transducer referencing the flux sensed by a coil, is reported. The experimental results of a validation test campaign at the European Organization for Nuclear Research (CERN)...
The metrological characterization in a static magnetic field of a transducer based on ferrimagnetic resonance for realtime markers in particle accelerators is reported. The transducer is designed to measure the magnetic field with a precision of 10 μT. A case study on the new real-time field monitoring system for the CERN accelerators highlighting the performance of the new ferrimagnetic transducer...
A method for modeling and measuring electromagnetic transients due to eddy currents in fast-pulsed resistive magnets is proposed. In particular, an equivalent-circuit model and a method for time-domain measurements of eddy currents are presented. The measurements are needed for an accurate control of the magnetic field quality to ensure adequate stability and performance of the particle beam in particle...
An analytical model to describe the effects of an external DC magnetic field on the harmonics amplitude of the secondary voltages of a Linear Variable Differential Transformer LVDT is proposed. A very general approach is used based on the introduction of the equivalent differential permeability concept that takes into account the sensor's geometry as well as the magnetic properties of its materials...
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