Author/Authors :
Adams، نويسنده , , D. and Adeva، نويسنده , , B. and Akdogan، نويسنده , , T. and Arik، نويسنده , , E. and Arvidson، نويسنده , , A. and Badelek، نويسنده , , B and Bardin، نويسنده , , G. and Baum، نويسنده , , G. and Berglund، نويسنده , , P. and Betev، نويسنده , , L. and Birsa، نويسنده , , R. and Bjِrkholm، نويسنده , , P. and Bonner، نويسنده , , B.E. and de Botton، نويسنده , , N. and Boutemeur، نويسنده , , M. and Bradamante، نويسنده , , F. and Bra، نويسنده ,
Abstract :
A muon beam polarimeter was built for the SMC experiment at the CERN SPS, for beam energies of 100 and 190 GeV. The beam polarisation is determined from the asymmetry in the elastic scattering off the polarised electrons of a ferromagnetic target whose magnetisation is periodically reversed. At muon energies of 100 and 190 GeV the measured polarisation is Pμ=−0.80±0.03 (stat.)±0.02 (syst.) and Pμ=−0.797±0.011 (stat.)±0.012 (syst.), respectively. These results agree with measurements of the beam polarisation using a shape analysis of the decay positron energy spectrum.
Keywords :
Polarised electron , Magnetised target , Polarised scattering , Polarised muon , Polarisation measurement , Muon beam
