A High Precision Measurement of the Neutron Electric Form Factor, G{sub E}{sup n} at High Q2

In the spring of 2006, Jefferson Lab experiment 02-013 successfully collected data to measure the neutron elastic form factor G{sub E}{sup n} at the four-momentum transfer values Q2 = 1.2, 1.8, 2.6, and 3.5(GeV/c)2. This measurement of the quasi-elastic semi-exclusive 3He-vectore(e-vector,e'n) reaction used the polarized CEBAF beam (Pb {approx_equal} 85%) and a highly polarized 3He target (Pt {approx_equal} 50%). Neutrons were detected in a large array of scintillators with an efficiency of 35-40%. The electrons were detected by the newly commissioned BigBite spectrometer with a solid angle of 76msr and a momentum resolution of 1%. From the transverse asymmetry of the cross section, G{sub E}{sup n} will be extracted. A statistical accuracy of {delta}G{sub E}{sup n}/G{sub E}{sup n} {approx_equal} 0.14 is expected.