115KV solid state long pulse modulator for the European spallation source (ESS)

In this paper, the results of a 2.88 MW solid state long pulse modulator, which has been designed for the new linear collider at the european spallation source in Lund, are summarized. The presented modulator generates an output voltage pulse of 115 kV with a pulse length of 3.5 ms. The modulator design is verified by measurements performed with a full scale prototype, which is operated under nominal load conditions. All specifications are well within the given limits and the system achieves a pulse efficiency of 96.78% and an overall system efficiency of 91.88%.