The analyzing powers in proton-deuteron elastic and proton-neutron quasi-elastic scattering
have been measured at small angles using a polarized proton beam at the COSY storage ring incident on
an unpolarized deuterium target. The data were taken at 796 MeV and five higher energies from 1600 MeV
to 2400 MeV. The analyzing power in pd elastic scattering was studied by detecting the low energy recoil
deuteron in telescopes placed symmetrically in the COSY plane to the left and right of the beam whereas
for pn quasi-elastic scattering a low energy proton was registered in one of the telescopes in coincidence with
a fast scattered proton measured in the ANKE magnetic spectrometer. Though the experiment explores
new domains, the results are consistent with the limited published information
