High-field pulsed magnet instruments for x-ray studies of materials at the Advanced Photon Source*

High-field pulsed magnets are not the solution to x-ray studies of all problems requiring high magnetic fields, but, they are the only solution to many. We present a very high-field pulsed magnet system for x-ray studies of materials at the Advanced Photon Source (APS). The high-field instruments for x-ray studies are unique in the United States. Currently, 30 Tesla split-coil and long-pulse solenoid magnets are in use for scattering and spectroscopic experiments, respectively. The coils are made of CuAg wires. Pulsed fields (1-10 ms in duration) are generated using a configurable bipolar capacitor bank (40 kJ). For scattering studies split coils are mounted on the cold finger of a closed-cycle He cryostat capable of a repetition rate of $\sim$10-20 minutes for peak fields in the range of 20-30 Tesla. Time-resolved scattering data are typically collected using a fast APD detector. Initial scattering studies of a geometrically frustrated magnet will be presented.