The spin program with CLAS at JLab

Abstract

We report on the status of an extensive program to study the scattering of longitudinally polarized electrons from longitudinally polarized NH3 and NDa targets using the CLAS detector at JLab. The data span a range in Q2 from 0.05-4.5 (GeV/c) 2 and a range in W, the "y*N invariant mass, up to about 3GeV. With the excellent particle identification available with the CLAS, both inclusive and exclusive scattering can be studied. The experimental techniques are reviewed and some preliminary results are presented. This paper focuses on extraction of the spin structure function gl for the proton and the deuteron.