Inductively coupled 30 T magnetic field platform for magnetized high-energy-density plasma studies

• Published in: Review of scientific instruments Vol. 89; no. 8; p. 084703
• Main Authors: Fiksel, G, Backhus, R, Barnak, D H, Chang, P-Y, Davies, J R, Jacobs-Perkins, D, McNally, P, Spielman, R B, Viges, E, Betti, R
• Format: Journal Article
• Language: English
• Published: United States 01.08.2018
• ISSN: 1089-7623
• DOI: 10.1063/1.5040756

A pulsed high magnetic field device based on the inductively coupled coil concept [D. H. Barnak , Rev. Sci. Instrum. , 033501 (2018)] is described. The device can be used for studying magnetized high-energy-density plasma and is capable of producing a pulsed magnetic field of 30 T inside a single-turn coil with an inner diameter of 6.5 mm and a length of 6.3 mm. The magnetic field is created by discharging a high-voltage capacitor through a multi-turn solenoid, which is inductively coupled to a small single-turn coil. The solenoid electric current pulse of tens of kA and a duration of several s is inductively transformed to hundreds of kA in the single-turn coil, thus enabling a high magnetic field. Unlike directly driven single-turn systems that require a high-current and low-inductive power supply, the inductively coupled system operates using a relatively low-current power supply with very relaxed requirements for its inductance. This arrangement significantly simplifies the design of the power supply and also makes it possible to place the power supply at a significant distance from the coil. In addition, the device is designed to contain possible wire debris, which makes it attractive for debris-sensitive applications.