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Traveling Wave Tube (TWT) regenerative oscillators have been proposed and validated as very attractive Terahertz (GHz) sources. Microfabricated integration requires intensive attention before the feedback loop is fully built into a TWT, which makes it very important to investigate the effect of feedback attenuation in a high frequency TWT regenerative oscillator. In this paper, a 5 GHz helix TWT regenerative...
Defense application of High power microwave (HPM) devices require compact systems delivering the same magnitude of energy as that of large scale system. Magnetic flux compression generators (MFCG) are devices with large energy densities capable of delivering large currents, but HPM devices require high voltages. This can be achieved by using MFCG driving an inductive energy storage system with an...
A strong axial magnetic field is required to guide a relativistic pulsed electron beam. The magnetic field can be supplied either by a permanent magnet or an electromagnet. In a backward wave oscillator (BWO) experiment, as the required field is 0-1.2 T in a cylindrical volume having radius of a couple of centimeters and length of about 10-12 cm, an electromagnet is preferred. A large pulsed current...
Linear Induction accelerator rated 200kV, 5kA, 100ns and 100Hz repetition rate has been designed and developed in the division. Electron linear induction accelerator belongs to a new class of short pulse, high average power accelerator being developed for various industrial, medical and defense application. The satisfactory performance of all the sub-systems including solid state power modulator,...
In recent years, pulsed power systems have gained importance for the pulsed electron beam generation for industrial and defense applications. High voltage Energy storage capacitors were being used widely worldwide for the pulsed power system in electric field. In case of capacitive energy storage system, the size of the system is decided by capacitor size which depends on dielectric strength and relative...
Preliminary experimental results of an axially extracted virtual cathode oscillator (vircator) built on the low impedance pulsed electron beam accelerator AMBICA-600 is reported. The AMBICA-600 pulsed power system mainly comprises of a coaxial waterline charged from single turn Tesla transformer. Waterline has impedance of ~5Ω and generates pulse width of ~60ns. The generated pulsed high power microwave...
An electron gun test stand has been developed at RRCAT. The test stand consists of a high voltage pulsed power supply, electron gun filament supply, grid supply, UHV system and electron gun current measurement system. Several electron guns developed indigenously were evaluated on this test stand. The shielding is provided for the electron gun set up. Electron gun tests can be tested upto 55kV with...
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