Author/Authors :
Beard، نويسنده , , K.B and Madey، نويسنده , , R and Zhang، نويسنده , , W.-M and Manley، نويسنده , , D.M and Anderson، نويسنده , , B.D and Baldwin، نويسنده , , A.R and Cameron، نويسنده , , J.M and Chang، نويسنده , , C.C and Dodson، نويسنده , , G.W and Dow، نويسنده , , K and Eden، نويسنده , , T and Finn، نويسنده , , J.M and Hyde-Wright، نويسنده , , C and Jiang، نويسنده , , W.-D and Kelly، نويسنده , , Hubertus J.J. and Kowalski، نويسنده , , S and Lourie، نويسنده , , R and Markowitz، نويسنده , , P and Ni، نويسنده , , B and Pella، نويسنده , , P.J and Reichelt، نويسنده , , T and Spraker، نويسنده , , M and Turchinetz، نويسنده , , W and Ulmer، نويسنده , , P.E and Van Verst، نويسنده , , S، نويسنده ,
Abstract :
The Møller polarimeter at the Bates Linear Accelerator Center was used to measure the polarization of an 868-MeV electron beam with a duty cycle of 0.8%. Longitudinally polarized electrons in the beam were scattered from polarized atomic electrons in an FeCo foil, and the helicity-dependent scattering asymmetry was measured by detecting both electrons in coincidence with a pair of Cherenkov counters located symmetrically on either side of the beam. From the measured asymmetry, the beam polarization was inferred to be (42.4 ± 1.7 ± 1.2)%, where the first uncertainty is statistical and the second is systematic.
