FAST E-FIELD SWITCHING OF A PULSED SURFACE MUON BEAM - THE COMMISSIONING OF THE EUROPEAN MUON FACILITY AT ISIS

The ISIS pulsed muon facility at RAL has been upgraded by the inclusion of a fast E-field kicker which simultaneously divides and distributes the muon pulses at surface momentum to the three experimental areas at a repetition rate of 50 Hz. This upgraded facility has been successfully commissioned in conjunction with a new muSR spectrometer. It has been shown that this new spectrometer can operate as expected with a figure of merit for muSR experiments similar to that of the original spectrometer, in spite of receiving only half of the relative muon intensity. This twofold increase in experimental capability will be further increased in the near future by the incorporation of experimental equipment in the third beamline. Such a facility will be capable of satisfying a European wide demand for muSR research with pulsed surface muons.