G0 Backward Angle Measurement

• detect scattered electrons at qe ~ 110o

• need three runs each for LH2 and LD2 

           at E = 424,   576,   799 MeV

       for Q2 =  0.3,    0.5,    0.8   (GeV/c)2

          (total of 6 runs x 700 hours each)

Requires additional hardware:

• Cryostat Exit Detectors (CED) to separate elastic and inelastic electrons

  used in coincidence with FPDs

• Cerenkov detector for pion rejection (primarily for LD2 target)

• electronics

• LD2 target

Requires physical turn-around:

Electron beam

Detectors

Magnet