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HL: Halbleiterphysik
HL 18: Symposium: Physics in High Magnetic Fields
HL 18.3: Fachvortrag
Dienstag, 12. März 2002, 15:30–16:00, H15
The Dresden 100 T/10 ms Project: A High Magnetic Field Facility at an IR-FEL — •Frank Pobell — Forschungszentrum Rossendorf, Dresden and High-Magnetic-Field Project Dresden
We are planning to build a 100 T/100 ms, 60 T/1 s pulsed field user facility with a 50 MJ capacitor bank at the Forschungszentrum Rossendorf near Dresden [1]. This would provide the appealing possibility to have access to Zeeman and cyclotron resonance energies in the energy range of the infrared free-electron-lasers (5 µm to 150 µm; 2ps; > 10 W) now under construction at the radiationsource ELBE (superconducting electron linear accelerator; 40 MeV; 1mA; 2 ps; cw) in Rossendorf. The work is accompanied by computer simulations of the planned coil systems, of the power supply, and by the development of high- strength conductors aiming at a tensile strength of about 1.5 GPa at σ−σCu/2 (microcomposite CuAg alloys and Cu-steel macro compounds).
With a view of gaining experience in the construction and operation of pulsed magnets, a pilot pulsed field laboratory was established at the Institute of Solid State and Materials Research Dresden. The laboratory includes short pulse magnets with peak field up to 60 T in a 24 mm bore and a rise time of about 80 ms. The repitation rate of 20 min between pulses is limited by the cooling time of the coils. The coils are energized by a 10 MJ, 10 kV capacitor bank with some special features. With this set-up measurements of magnetization and magnotransport on 4f-electron systems have been carried out in the temperature range of 1.5 to 300 K and at fields up to 52 T using high precision pick-up coils.
[1] The Dresden high-magnetic-field project is a joint effort of Forschungszentrum Rossendorf; Institut für Festkörper- und Werkstofforschung Dresden; Max-Planck-Institut für Physik komplexer Systeme, Dresden; Max-Planck-Institut für chemische Physik fester Stoffe, Dresden; Institut für Angewandte Physik, TU Dresden