Design and Performance of Non-Destructive Pulsed Magnets at the Dresden High Magnetic Field Laboratory

Abstract

In this paper we consider various issues of design, fabrication, and performance of non-destructive pulsed magnets at the Dresden High Magnetic Field Laboratory. Currently, a variety of pulsed magnets are in operation in the laboratory. A 70 T/8.5 MJ magnet, having a 24 mm bore and generating field pulses of about 150 ms duration serves as a workhorse for external users and for in-house research. Smaller 60-65 T/1.5 MJ magnets with a bore of 20 mm and pulse duration of ~25 ms have been proven to be very reliable in operation. In addition, a new 90 T/9 MJ dual-coil magnet has recently achieved 87.2 T in a 20 mm bore. A 60 T/43 MJ longpulse magnet is currently tested. Questions of magnet longevity, coil monitoring, as well as magnetic-field measurements are addressed. Further magnet-technology developments and the route to 100 T are discussed.