Article
Version 1
Preserved in Portico This version is not peer-reviewed
Digital Miniature Cathode Ray Magnetometer
Version 1
: Received: 2 January 2024 / Approved: 3 January 2024 / Online: 4 January 2024 (03:38:17 CET)
A peer-reviewed article of this Preprint also exists.
Turqueti, M.; Wagner, G.; Goldschmidt, A.; Carney, R. Digital Miniature Cathode Ray Magnetometer. Instruments 2024, 8, 29. Turqueti, M.; Wagner, G.; Goldschmidt, A.; Carney, R. Digital Miniature Cathode Ray Magnetometer. Instruments 2024, 8, 29.
Abstract
In this study, we introduce the concept and construction of an innovative Digital Miniature Cathode Ray Magnetometer designed for the precise detection of magnetic fields. This device addresses several limitations inherent to magnetic probes such as D.C. offset, nonlinearity, temperature drift, sensor aging, and the need for frequent recalibration, while capable of oper-ating in a wide range of magnetic fields. The core principle of this device involves the utilization of a charged particle beam as the sensitivity medium. The system leverages the interaction of an electron beam with a scintillator material, which, then, emits visible light that is captured by an imager. The emitted scintillation light is captured by a CMOS sensor. This sensor not only rec-ords the scintillation light but also accurately determines the position of the electron beam, providing invaluable spatial information crucial for magnetic field mapping. The key innova-tion lies in the combination of electron beam projection, CMOS imager scintillation-based de-tection and digital image signal processing. By employing this synergy, the magnetometer achieves remarkable accuracy, sensitivity and dynamic range. The precise position registration enabled by the CMOS sensor further enhances the device's utility in capturing complex magnetic field patterns, allowing for 2D field mapping. In this work, the optimization of the probe's per-formance is tailored for applications related to the characterization of insertion devices in light sources, including undulators.
Keywords
Magnetometer; Magnetic Probe; Imager; Cathode Ray; Undulator; DSP; CMOS sensor; Cryo-genic; Cold Electronics; Magnetoencephalography
Subject
Engineering, Electrical and Electronic Engineering
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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