Speaker
Description
Magnetic fields play an important role in the behavior or many HEDP systems, however, the scaling of astrophysical relevant phenomena to a laboratory setting requires the generation of strong magnetic fields (>5 T) that can match the high flow velocities and energies achieved by the plasmas commonly created in these experiments. Accurate measurement of such powerful magnetic fields and field geometries requires the use of precise and often disposable measuring devices that can be easily adapted to any experiment. Here, we present a method for fabricating B-dot probes using commercially available inductor elements, commonly used in circuit board construction, with a study of the performance in strong (10 T) pulsed magnetic fields used in HEDP experiments. We show that these probes, in addition to being easy and cheap to manufacture, provide accurate and responsive measurements after being properly calibrated, and serve as a robust and reliable method for measuring magnetic fields.
This work is funded by the Lawrence Livermore National Laboratory for the LDRD project 17-ERD-027 under subcontract B628876, and was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344 and NNSA-DP and SC-OFES Joint Program in High-Energy-Density Laboratory Plasmas, grant number DE-NA0002956. Support for these experiments has been provided by the U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences under FWP SW1626 FES.
