The sPHENIX Forward Angle Spectrometer
  sPHENIX is a major upgrade proposed for the PHENIX detector. As part of this proposal, a forward spectrometer to cover the rapidity range 1<eta<4 is in a conceptual stage to complement the detectors in the central region. The forward rapidity region is important for the study of high density of gluons in a nucleus, as well as for the measurement of the spin structure of the nucleon. Some of the basic physics goals and a possible detector configuration are outlined. 
Richard Seto (for the PHENIX collaboration)
nucl-ex