A Pulsed Ferrite Inflector for the Emittance Measuring Device of the Chalk River High Current Test Facility

This paper describes a pulsed ferrite inflector for fast injection of the 750 keV, 100% duty factor proton beam of the Chalk River High Current Test Facility (HCTF), into an emittance measuring device (EMD). Tests with a low voltage prototype of a pulser have shown that a flat pulse top can be achieved by grading a lumped delay line (serving as a pulse forming network) with small additional capacitors, and that the pulse fall time can be substantially reduced by a tail biter, which at a given time diverts the current from the magnet coil and at the same time opens the primary switch of the pulser.