Abstract
The FELIX free-electron laser is continuously tuneable over the wavelength range 5–100 μm and can provide great power and the possibility of time-resolved experiments in the ns to μs range. We describe a pulsed magnet specifically designed for semiconductor experiments using FELIX, which provides fields of up to 45 T, with a pulse-shape tailored to the macropulses of the FELIX source. The magnet consists of a conventional outer coil providing fields of up to 30 T with a pulse length of several ms, plus a single-layer inner coil with a rise-time of ∼10 μs, matched to duration of the FELIX macropulses. The magnet is to be extended to fields of up to 60 T.
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