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

TL;DR

This paper introduces a novel 40-tesla pulsed-field cryomagnet designed for single crystal neutron diffraction at very low temperatures, enabling high magnetic field experiments with long pulse durations and high duty cycles.

Contribution

The paper presents the first implementation of a long-duration, high duty cycle 40-tesla pulsed-field cryomagnet specifically for neutron diffraction experiments at cryogenic temperatures.

Findings

Successful generation of 40 T magnetic pulses of 100 ms duration

Validation of the magnet setup using neutron diffraction at ILL

Achieved a high duty cycle with 6-7 pulses per hour

Abstract

We present the first long-duration and high duty cycle 40-tesla 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, $\pm$15 and $\pm$30{\deg} upstream and downstream of the sample, respectively. Using a 1.15MJ 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 ILL.