Conveners
Wed-Af-Po3.23 - Resistive and Pulsed High Field Magnet II
- Tao Peng (Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology)
- Frans Wijnen (Radboud University Nijmegen)
The Pulsed Field Facility (PFF)- National High Magnetic Field Laboratory (NHMFL) in Los Alamos, New Mexico has developed and operated a several types of ultra-high field pulsed magnets, including 100 T Multi-shot, 60 T Long Pulse, and an array of small 65 T magnets for users. Separately powering (nested) coils allows to both reduce the driving voltages and have a further degree of control over...
The 64 T with 10ms flat-top magnetic field system driven by capacitor was manufactured and tested at the Wuhan National High Magnetic Field Center (WHMFC). The system consists of the primary circuit and the secondary circuit driven by capacitor banks as they are normally used to generate a pulsed field. The magnet coil and the outer winding of the transformer are connected in series to form...
Traditional pulsed design software, such as PULSE and PMDS, only analyzes the stress distribution on the mid-plane of magnets. The calculations are under the assumption of the constant strain and adjacent materials are perfectly bonded together. These approximate calculations are effective in most cases but cannot take the axial elastoplastic of magnets in consideration and could make...
The Laboratoire National des Champs Magnetiques Intenses (LNCMI) is a French large scale facility, part of the European Magnetic Field Laboratory (EMFL), enabling researchers to perform experiments in the highest possible magnetic field. On its Grenoble site, the LNCMI provides up to 37 teslas combining a PolyHelices and Bitter magnet.
Following the power upgrade from 24 to 30 MW, the...
Inductive pulsed power generators apply coils as powerful short time energy storage which is an ordinary mean to deliver pulses of high power to loads like electromagnetic accelerators1. This article deals with the design, simulation, construction, electrical characterization and a pulsed stress test of a modular toroidal coil. The coil was made from 180 D-shaped copper discs and...
High field pulsed magnets at the NHMFL use high strength conductors up to 90% of its ultimate tensile strength. Therefore it is critical to ensure that the conductor is free of defects for its entire piece length which could be as long as a few hundred meters. It is known that in the wire drawing process, internal crack or so-called ‘chevron crack’ can occur due to unsuitable drawing die...
