Title :
Status of the BNL muon (g-2) experiment
Author :
Prigl, Ralf ; Brown, H.N. ; Bunce, G. ; Carey, R.M. ; Cushman, P. ; Danby, G.T. ; Debevec, P.T. ; Deng, H. ; Deninger, W. ; Dhawan, S.K. ; Druzhinin, V.P. ; Duong, L. ; Earle, W. ; Efstathiadis, E. ; Farley, F.J.M. ; Fedotovich, G.V. ; Giron, S. ; Gray, F
Author_Institution :
Brookhaven Nat. Lab., Upton, NY, USA
fDate :
4/1/1999 12:00:00 AM
Abstract :
The muon (g-2) experiment at Brookhaven completed a first run in June and July 1997. The main components of the experiment, which include the superconducting inflector, the superferric storage ring, the electrostatic quadrupoles and the lead-scintillating fiber electron calorimeters, have been commissioned satisfactorily. Our first measurement of the ratio R of the spin precession frequency of the positive muon relative to that of a free proton, R=(3.707219±0.000048)×10-3, is in good agreement with the previous CERN measurements for μ+ and μ- , and has approximately the same uncertainty as each of these measurements. In spring 1998 a muon kicker was installed and successfully tested in the storage ring magnet and a significant improvement in the knowledge of the muon g-factor is expected from upcoming runs in August 1998 and January 1999
Keywords :
g-factor; lepton magnetic moment; muons; BNL muon (g-2) experiment; electrostatic quadrupole; lead scintillating fiber electron calorimeter; muon g-factor measurement; muon kicker; spin precession frequency; superconducting inflector coil; superferric storage ring magnet; Electrons; Laboratories; Magnetic field measurement; Magnetic resonance; Mesons; Physics; Springs; Storage rings; Testing; Uncertainty;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
