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Commissioning of the Diagnostic Beam Line for the Muon RF Acceleration with H− Ion Beam Derived from the Ultraviolet Light

A muon LINAC is being study for a precise measurement of the muon anomalous magnetic moment (g-2) and the electric dipole moment (EDM) at J-PARC. We conducted an experiment with a muon RF acceleration on October and December 2017. The surface muon beam is irradiated to a metal degrader to generate slow negative muonium. The slow negative muoniums are accelerated to 89 keV with an electrostatic accelerator and an RFQ. Prior to muon RF acceleration test, we conducted the commissioning of the diagnostic beam line consisting of quadrupole magnet pair and a bending magnet. The ultraviolet light is irradiated to an aluminum foil and H− ion is generated. It simulates a negative muonium.Therefore, we can check operation for diagnostic beam line, which is essential for transportation and momentum selection of negative muonium. In this presentation, I would like to report the performance evaluation of the diagnostic beam line by H− ions.