The Electromagnetic Compatibility of the VISAR Laser Interferometer with the Angara-5-1 Facility

Abstract

Experiments on the creation of megabar pressures and acceleration of metal flyers by the pressure of a pulsed magnetic field are being carried out at the Angara-5-1 facility. Velocities of up to 10 km/s were achieved. The velocities of flyers were recorded using the VISAR laser interferometer (velocity interferometer system for any reflector). The issues of the electromagnetic compatibility of the VISAR with the Angara-5-1 facility are considered, since the operation of this facility causes electromagnetic interference and when the magnetic self-isolation is established in the vacuum transmission lines, X-ray bremsstrahlung is generated and influences the optics, fiber-optic cables, and photomultipliers. The suppression of these two sources of interference made it possible to reliably register the VISAR signals and determine the velocity of a flyer.