Fast-Field Cycling Nuclear Magnetic Resonance relaxometer's electromagnet with optimized homogeneity and reduced volume P. Videira, P. Sebastião, A. Roque, D. M. Sousa, E. Margato   2019/07/15

Abstract

In this article a Fast Field Cycling (FFC) NuclearMagnetic Resonance (NMR) electromagnet with low power consumption (less than 200 W), high field homogeneity and reduced volume is projected and described. The electromagnet is iron and copper based, possessing a high permeability and allowing for good magnetic field homogeneity in the operating range of 0 to 0.33 T. With this solution, it is possible to increase 65% the maximum magnetic field keeping the magnetic field homogeneity in comparison with former similar FFC relaxometers. Electromagnet's experimental and simulation results evaluating the generated magnetic field, field homogeneity, heating effects and cooling requirements are also presented. In addition, some technical aspects of the required coupled systems such as the cooling, sample heating are assessed.

Authors and affiliations

P. Videira1, P. Sebastião1, A. Roque2,4, D. M. Sousa3,4, E. Margato4,5
1. Department of Physics & CeFEMA, Instituto Superior Técnico, Universidade de Lisboa, Portugal
2. Department of Electrical Engineering. ESTSetúbal/Instituto Politécnico de Setúbal, Portugal
3. DEEC AC-Energia, Instituto Superior Técnico, Universidade de Lisboa, Portugal
4. INESC-ID. Lisboa, Portugal
5. CEI, ISEL-Instituo Superior de Engenharia de Lisboa, Instituto Politécnico de Lisboa, Portugal

Key words

Electromagnet, Relaxometer, Fast Field Cycling, Volume, Homogeneity.

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