Fermilab E1039 polarized target experimental apparatus and changes from SeaQuest/E906

Fermilab E1039 will be the first experiment to do polarized Drell-Yan measurements with sea antiquarks and is expected to start commissioning in the Fall of 2018.  E1039 is expected to have 10,000 times higher statistics than the COMPASS II polarized measurements using pion valence quarks. E1039's polarized target will use ammonia, NH3 and ND3, to provide the hydrogen and deuterium targets.  The ammonia will be polarized utilizing a superconducting magnet and a cooling system to keep the targets at 1 K.  The target system will be described including its demonstrated ability to handle high beam rates with reasonable time cycles for re-polarization and replacing the custom targets. Changes being made to the shielding, beam line and monitoring, spectrometer, basic Data Acquisition systems, and other required components will be described and current status will be reported.  Discussions of the software upgrades and the physics being studied will be covered by other talks at this conference.