The polarized internal gas target for ANKE at COSY-Jülich

Abstract

A polarized internal hydrogen and deuterium gas target for the magnetic spectrometer ANKE in the COSY-Jülich storage ring is being developed. The polarized atomic beam will feed a storage cell. At present, the beam intensity measured with use of a compression tube is 6.4⋅1016 H atoms per second. The nuclear polarization of the beam and the target gas will be investigated with a Lamb-shift polarimeter. First studies on the COSY beam properties have been performed with an aperture at the ANKE-target position. They will be extended with prototypes of cell tubes as soon as a new target chamber is available.