40-tesla pulsed-field cryomagnet for single crystal neutron diffraction

F. Duc (1) , X. Tonon (2) , Julien Billette (1) , B. Rollet (2) , William Knafo (1) , F. Bourdarot (3, 4) , Jérome Béard (1) , F. Mantegazza (3) , B. Longuet (3) , J.E. Lorenzo (5) , E. Lelièvre-Berna (2) , P. Frings (1) , L.-P. Regnault (2)

1 LNCMI-T - Laboratoire national des champs magnétiques intenses - Toulouse
2 ILL - Institut Laue-Langevin
3 INAC - Institut Nanosciences et Cryogénie
4 MDN - Magnétisme et Diffusion Neutronique
5 NEEL - MagSup - Magnétisme et Supraconductivité

We present the first long-duration and high duty cycle 40-T pulsed-field cryomagnet addressed to single crystal neutron diffraction experiments at temperatures down to 2 K. The magnet produces a horizontal field in a bi-conical geometry, ±15° and ±30° upstream and downstream of the sample, respectively. Using a 1.15 MJ mobile generator, magnetic field pulses of 100 ms length are generated in the magnet, with a rise time of 23 ms and a repetition rate of 6-7 pulses per hour at 40 T. The setup was validated for neutron diffraction on the CEA-CRG three-axis spectrometer IN22 at the Institut Laue Langevin.

Domaines: Instrumentations et Détecteurs [physics.ins-det]; Physique Générale [physics.gen-ph]

F. Duc, X. Tonon, Julien Billette, B. Rollet, William Knafo, et al.. 40-tesla pulsed-field cryomagnet for single crystal neutron diffraction. Review of Scientific Instruments, 2018, 89 (5), pp.053905. ⟨10.1063/1.5028487⟩. ⟨hal-01802055⟩