Author/Authors :
Danby، نويسنده , , G.T. and Addessi، نويسنده , , L. and Armoza، نويسنده , , Z. and Benante، نويسنده , , J. and Brown، نويسنده , , H.N. and Bunce، نويسنده , , G. and Cottingham، نويسنده , , J.C. and Cullen، نويسنده , , J. and Geller، نويسنده , , J. and Hseuh، نويسنده , , H. and Jackson، نويسنده , , J.W. and Jia، نويسنده , , L. and Kochis، نويسنده , , S. and Koniczny، نويسنده , , D. and Larsen، نويسنده , , R. and Lee، نويسنده , , Y.Y. and Mapes، نويسنده ,
Abstract :
The muon g-2 experiment at Brookhaven National Laboratory has the goal of determining the muon anomalous g-value aμ (=(g−2)/2) to the very high precision of 0.35 parts per million and thus requires a storage ring magnet with great stability and homogeniety. A superferric storage ring with a radius of 7.11 m and a magnetic field of 1.45 T has been constructed in which the field quality is largely determined by the iron, and the excitation is provided by superconducting coils operating at a current of 5200 A. The storage ring has been constructed with maximum attention to azimuthal symmetry and to tight mechanical tolerances and with many features to allow obtaining a homogenous magnetic field. The fabrication of the storage ring, its cryogenics and quench protection systems, and its initial testing and operation are described.
Keywords :
Muon g-2 , storage ring , Large superconducting coils , superconducting magnet
