The H line: a brand new beam line for fundamental physics at the J-PARC muon facility N Kawamura, A Toyoda, M Aoki et al. - Recent citationsA new muon-pion collection and transport system design using superconducting solenoids based on CSNS Ran Xiao et al Abstract. The MuSIC (Muon Science Innovative Channel) beam line at RCNP (Research Centre for Nuclear Physics), Osaka will be the most intense source of muons in the world. A proton beam is incident on a target and, by using a novel capture solenoid, guides the produced pions into the beam line where they subsequently decay to muons. This increased muon flux will allow more precise measurements of cLFV (charged Lepton Flavour Violation) as well as making muon beams more economically feasible. Currently the first 36• of solenoid beam pipe have been completed and installed for testing with low proton current of 1 nA. Measurements of the total particle flux and the muon life time were made. The measurements were taken using thin plastic scintillators coupled to MPPCs (Multi-Pixel Photon Counter) that surrounded a magnesium or copper stopping target. The scintillators were used to record which particles stopped and their subsequent decay times giving a muon yield of 8.5 × 10 5 muons W −1 proton beam or 3 × 10 8 muons s −1 when using the RCNP's full power (400 W).

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An Alvarez linac is being built to increase the injection energy of the booster synchrotron from 20 MeV to 40 MeV.Its drift tubes are equipped with quadrupole permanent magnets. It has post couplers and still inherits the two feed system.Two TH 516 RF high power amplifiers, which have excited the 20 MeV linac, are modified so that one excites the old linac and the other the new one. 40 MeV H beams will be supplied to the booster in November of 1985.