M12: a 700keV-2.5kA dual pulse electron beam injector

M12 is an Inductive Voltage Adder (IVA) generator developed at CESTA as a test bed induction injector, in the framework of future electron accelerators for radiography. M12 consists in a dual pulse high-power generator which feeds the four induction cells (ferrite) of the IVA. A 60ns flat top pulse will be applied across the foilless diode gap in order to produce twice, a 2.5 kA electron pulse, from a velvet cathode. The delay between the two pulses can be adjusted from 0.3 up to
$2\mu \mathrm{s}$
., The physics involved in dual emission, regarding voltage, current stability, as well as cathode behavior, are being investigated [1].