A transport line for beams of separated muons from the JINR phasotron to a low-background laboratory

Meson channel 2 of the JINR phasotron for transportation of separated muon beams to the low-background laboratory is described. Changes in the design of the magnetic analyser of the beamline 2 not only increased the intensity by a factor of more than 2 but also improved the spatial distribution of the beam at its exit. For negative muons of momentum 125 MeV/c the intensity is 6x104 part./s (per 1 μA of the extracted proton beam) with a 9% admixtire of electrons and 0.4% of pions, the momentum resolution of the channel is +-6 MeV/c. The intensity of the 125 MeV/c posiive muon beam is 2x105 part./s per 1μA of the proton beam, the positron admixture is 3%. 9 refs.; 7 figs.; 1 tab