Please use this identifier to cite or link to this item: https://www.um.edu.mt/library/oar/handle/123456789/58811
Title: Performance analysis of a reduced form-factor high accuracy three-axis teslameter
Authors: Cassar, Johann
Sammut, Andrew
Sammut, Nicholas
Calvi, Marco
Spasic, Sasa
Popovic Renella, Dragana
Keywords: Wiggler magnets
Grenz rays
Analog-to-digital converters
Hall effect
Magnetism
Metal oxide semiconductors, Complementary
Issue Date: 2019
Publisher: MDPI AG
Citation: Cassar, J., Sammut, A., Sammut, N., Calvi, M., Spasic, S., & Popovic Renella, D. (2019). Performance analysis of a reduced form-factor high accuracy three-axis teslameter. Electronics, 8(11), 1230.
Abstract: In the framework of the SwissFEL project at the Paul Scherrer Institute (PSI), a Hall probe bench is being developed for the high-precision magnetic characterization of the insertion devices for the ATHOS soft X-ray beamline. For this purpose, a novel three-axis teslameter has been developed, which will be placed between the undulator and its outer shell in a very limited volumetric space of 150 × 50 × 45 mm. Together with a SENIS® 3-axis Hall probe at the center of the cross sectional area of the undulator, the setup will traverse along the undulator length on a specifically designed rig with minimal vibrations. This teslameter has all the analog signal conditioning circuitry for the Hall probe and also has on board 24-bit digitization. The instrument also handles an interface to a linear absolute encoder. The old instrumentation used only had analog signal conditioning circuitry whilst digitization was done off board. The new instrument also provides a very accurate magnetic field map in the µT range with simultaneous readings from the position encoder at an accuracy of ±3 µm. In this paper, a series of tests are described, which were performed at PSI in order to establish the measuring precision and repeatability of the instrument.
URI: https://www.um.edu.mt/library/oar/handle/123456789/58811
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