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Metrolab Webinar with Prof. Guy Aubert

1.10.2020 | Metronews, MFC2046, MRI

Metrolab virtually hosted Prof. Guy Aubert on October 15th to discuss the use of Spherical Harmonics modeling to describe the magnetic field of a magnet to speed-up the shimming process [1, 2].

we have recorded both morning and afternoon sessions and will share them shortly.

This year, Metrolab is celebrating its 35th anniversary. Metrolab was established in 1985 by Claude Marmaroli, Claude Reymond, and Pascal Sommer. The focus of Metrolab is to measure magnetic fields with extreme precision. Thirty-five years later, Metrolab is still the leader in this field and collaborates with most MRI manufacturers and high-energy physics laboratories worldwide.

The first high precision magnetometer, based on the NMR technology and design coming out of CERN, was a single point measurement instrument. In 1986, Guy Aubert contacted Metrolab with the concept of mapping magnetic fields to speed-up the shimming process. This was the start of a lasting relationship between Guy Aubert and Metrolab and led to the Magnetic Field Camera development. MFC2046 is the latest generation of this product.

Professor Guy Aubert is a Physicist specializing in magnetism. He joined the Laboratory for Electrostatics and Physics of Metals, Grenoble, France. Under Louis Néel (1970 Nobel Prize winner in physics), Guy engaged in experimental studies on anisotropic magnetic properties. He designed new instruments for this purpose and developed original analysis methods, allowing a complete renewal of the fundamental studies on magnetic anisotropy. After receiving his Ph. D. degree, in 1966, he continued his research career in magnetic materials. in 1980, he became the High Magnetic Field Laboratory Director, Grenoble. He then became more involved in technological research through the development of instrumentation. He is currently one of the world’s leading experts in magnet design. As Acting Administrator, he was principally responsible for creating the Ecole Normale Supérieure, Lyon (1985), and he became its first Director in 1988. He was the General Director of CNRS from July 1994 to July 1997.

He is currently retired as Professor Emeritus of the University of Grenoble. He continues working full time with the Commissariat à l’Energie Atomique, Gif-sur-Yvette, France, as a Scientific Advisor of the Institute of Research into the Fundamental Laws of the Universe (IRFU). He has actively contributed to Iseult’s success, and he is primarily the mind behind the magnetic design of Iseult and the unusual construction methods (pancake winding) [3,4].

Guy Aubert is the author of more than 60 publications, including significant work on electromagnetism, and the holder of 30 patents.

Bibliography: 

[1]: Laplace’s equation is separable in 13 coordinate systems. Every quantity obeying Laplace’s equation can be expanded in a unique Laplace series, Walter Rudin, Ph.D. Thesis, Duke University, 1949, « Uniqueness Theory for Laplace Series,» Trans. Amer. Math. Soc, Vol. 68, N°2, March 1950, pp. 287-303.

[2]: An alternative to Wigner d-matrices for rotating real spherical harmonics, Guy Aubert, AIP Advances 3, 062121 (2013); https://doi.org/10.1063/1.4811853

[3]: How the CEA/Irfu developed Iseult; the gigantic 11.7 T MRI magnet! A discussion with Lionel Quettier.

[4]: The homogeneity of the magnetic field of the Iseult magnet on good rails…

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