On the calculation of critical currents at multisectional linear electron accelerators

A method for calculation of critical currents at multisectional linear electron accelerators is presented for a case when part of standard accelerating sections is changed for sections with radial cuts of diaphragms. Calculation dependences of critical currents at the output of 2 GeV accelerator on the number of cut sections for durations of current pulse of tau=1-2.5 μc and an increment in energy of ΔE=30-45 MeV per a section are presented. It is shown that to obtain critical current at the accelerator output of the order of 100 μA at tau=1 μc and ΔE approximately equal to 30 MeV it is necessary to change 20 accelerating sections of the initial part of the accelerator