DESIGN AND PERFORMANCE OF A 500 V PULSE AMPLIFIER FOR THE CHOPPER OF THE CERN SUPERCONDUCTING H - LINAC (SPL)

The Superconducting H - Linac under study at CERN requires a high performance 3 MeV chopper. The pulse amplifier driving the chopper structure has to provide 500 V on 50 Ω , with rise and fall times below 2 ns at a repetition rate as high as 45 MHz. After analysis of the limiting parameters, potential solutions are described. The detailed design of the selected solution is presented, together with the actual performance of the prototype.