Author/Authors :
Alcorn، نويسنده , , J. and Anderson، نويسنده , , B.D. and Aniol، نويسنده , , K.A. and Annand، نويسنده , , J.R.M. and Auerbach، نويسنده , , L. and Arrington، نويسنده , , J. and Averett، نويسنده , , T. and Baker، نويسنده , , F.T. and Baylac، نويسنده , , M. and Beise، نويسنده , , E.J. and Berthot، نويسنده , , J. and Bertin، نويسنده , , P.Y. and Bertozzi، نويسنده , , W. and Bimbot، نويسنده , , L. and Black، نويسنده , , T. and Boeglin، نويسنده ,
Abstract :
The instrumentation in Hall A at the Thomas Jefferson National Accelerator Facility was designed to study electro- and photo-induced reactions at very high luminosity and good momentum and angular resolution for at least one of the reaction products. The central components of Hall A are two identical high resolution spectrometers, which allow the vertical drift chambers in the focal plane to provide a momentum resolution of better than 2×10−4. A variety of Cherenkov counters, scintillators and lead-glass calorimeters provide excellent particle identification. The facility has been operated successfully at a luminosity well in excess of 1038 cm−2 s−1. The research program is aimed at a variety of subjects, including nucleon structure functions, nucleon form factors and properties of the nuclear medium.
