HERA luminosity upgrade superconducting magnet production at BNL

Production of two types of superconducting multi-function magnets, needed f or the HERA Luminosity Upgrade is underway at BNL. Coil winding is now comp leted and cryostat assembly is in progress. Magnet type GO and type GG cold masses have been satisfactorily cold tested in vertical dewars and the fir st fully assembled GO magnet system has been horizontally cold tested and s hipped to DESY. Warm measurements confirm that the coils meet challenging h armonic content targets. In this paper we discuss GO and GG magnet design a nd construction solutions, field harmonic measurements and quench test resu lts.