6533b821fe1ef96bd127af5a

RESEARCH PRODUCT

The storage ring magnet of the third muon (g-2) experiment at CERN

H. DrummG. PetrucciÖ. RunólfssonC. Eck

subject

PhysicsMuonLarge Hadron ColliderElectromagnetbusiness.industryGeneral Medicinelaw.inventionMagnetic fieldNuclear physicsAzimuthOpticslawElectrical equipmentMagnetDetectors and Experimental TechniquesbusinessStorage ring

description

The third ( g −2) experiment carried out at CERN required a storage ring magnet with a field as uniform as possible and known with an accuracy of a few parts per million over the whole storage region. Here we describe this magnet, which has a useful aperture of 120 mm horizontally and 80 mm vertically and a diameter of ∼14 m. The various field controls necessary are indicated, and the complex procedure adopted for the shimming work is described. The finally reached homogeneity of the field, averaged in azimuth, was 3 ppm. All the various error sources and field map corrections needed are analysed. Finally, the special aspects of the machine developed for the shimming are described.

10.1016/s0029-554x(79)93485-2http://cds.cern.ch/record/133055