• [1]

    Johnson J R et al. Beam Polarization Measurements at the SPEAR Storage Ring, SLAC–PUB–2903,April 1983 2 Koutchouk J–P.Energy Calibration with a Polarized Beam at LEP, In: Proc.15–th ICHEA.July 1992 3 Du W F et al. Field Measurement of the Reference Magnet for BEPC In: Proc. 15th ICHEA,July 1992 4 Bai J Z et al(BES Collaboration). Phys. Rev, 1996, D53:20