High magnetic pulse by solenoids for intense ion beam transport

Plasma Physics by Laser and Applications 2013 Conference

Giuffreda, E.^1 ; Velardi, L.^1 ; Delle Side, D.^1 ; Paladini, F.^1 ; Nassisi, V.^1

Department of Mathematics and Physics, University of Salento, LEAS and INFN, via per Arnesano, Lecce, Italy^1

关键词: Charging voltage;    Electric connections;    Focus ion beam;    High voltage capacitors;    High voltage pulsers;    Intense ion beams;    Magnetic pulse;    Rogowski Coil;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/508/1/012022/pdf
DOI  :  10.1088/1742-6596/508/1/012022

来源: IOP

【 摘 要 】

A high voltage pulser up to 50 kV, with a main pulse of 2 μs time duration, was realized using a fast high voltage capacitor of 150 nF (50 kV) connected to the ground by a homemade spark-gap. The circuit, contained in a metallic box to avoid irradiation, had short electric connections in order to reduce the inductances. The diagnostic was performed by two systems: a self-integrating Rogowski coil and an integrator connected to a current transformer, both suitable for pulses longer than 1 μs. To focus ion beams with energy reaching 40 keV, we made two solenoids having an inductance of 3.6 and 16 μH which were fed by the current generated by the pulser up to 12 kA, 1 μs at 50 kV of charging voltage of capacitor. The measurements determined a magnetic field at the solenoid center of 0.61 T for the more inductive solenoid and 1.14 T for the other one.