| Paper |
Title |
Page |
| WEPC143 |
System for Local Magnetic Field Measurement System Based on a Coil with Three Square Millimeter
|
2344 |
| |
- J. F. Citadini, R. Basilio, M. Potye, G. Tosin
LNLS, Campinas
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We present a magnetic field measurement system based on a rotating coil with 3mm2 active area and approximately 500 turns to measure local magnetic field. The structure of a coil is not so complex, simplifying the evaluation of its sources of errors. The steps used to build the coil are shown as well as the performance of the measurement system. The calibration of the coil was made against a magnetic field generated by a solenoid with very well determined geometry.
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| WEPC161 |
Some Remarks about Characterization of Magnetic Blocks with Helmholtz Coil
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2386 |
| |
- G. Tosin, R. A. Pimenta
LNLS, Campinas
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The use of Helmholtz coils for magnetic block characterization is a widespread technique because of its small sensitivity to block positioning errors and high precision. In this paper we present some calculations related to the influence of block positioning for the cases where the Helmholtz condition is not exactly satisfied. Also the comparison between a model based on point dipolar magnetic moment and magnetized blocks with real dimensions is analyzed, as well as the corrections associated to the effect of self-demagnetization of the blocks.
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