Abstract
The study of the nucleon polarized structure functions has matured beyond the inclusive measurements of the past to the investigation of all eight quark distribution functions in the nucleon. Jefferson Lab's Hall C program of polarized structure functions studies started with a measurement of the proton and deuteron spin structure in the resonances at Q2 {approx} 1.3 [GeV/c]2. This work will be extended for the proton to more than 5 [GeV/c]2 for both DIS and the resonances in the upcoming SANE experiment. SANE will use a novel non-magnetic very large solid angle detector, BETA. Semi-inclusive asymmetries will be measured to determine the flavor composition of the nucleon spin in the recently approved Semi -- SANE experiment. The 11 GeV energy upgrade will open new opportunities to study other functions, such as the transversity, Collins and Sievers functions, using vertical polarized targets.
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