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Progress in the production of transverse high magnetic fields

A new prototype of a compact transverse magnetic field coil, designed and realized at the Laboratoire National des Champs Magnétiques Intenses of Toulouse, has reached a magnetic field higher than 30 teslas, corresponding to a current bigger than 36000 amperes.


This coil, which is a big step forward in the generation of transverse magnetic fields, will allow physicists to set up an experiment which goal is to measure the Vacuum Magnetic Birefringence. Since one of this type of coils (total length 73 cm) produces 300 T²m, three of them will be realised in the framework of the BMV project and installed in a few meter long optical Fabry-Perot cavity. For sake of comparison, a CERN LHC dipole gives 1300 T²m over 14 m.


This « XXL-coil » has been fully realized at the Laboratoire National des Champs Magnétiques Intenses de Toulouse and initially tested at the Toulouse site. The final test has been conducted at the Dresden High Magnetic Field Laboratory in Germany.



Figure: Transverse magnetic field produced by the « XXL-coil » realized at the Laboratoire National des Champs Magnétiques Intenses of Toulouse.


Local contact: Julien Mauchain (mauchain@lncmp.org)


BMV project: web page