This report documents results of a joint effort made by the Ion Physics Division of High Voltage Engineering Corporation (IPC) and MIT's High Voltage Research Laboratory (HVRL) to determine the effectiveness of coated and gas shielded cathodes as a means of increasing vacuum breakdown strength under short pulse conditions. Work was carried out concurrently at the two laboratories, with MIT developing a technique for rapidly evaluating large numbers of coatings on small electrodes at relatively low pulse voltage (120 kV or less) while IPC concentrated on testing larger electrodes and fewer coatings at higher total voltage. Experiments with gas shielded cathodes were also con¬ducted at IPC.
展开▼
