The CLAS12 beamline and its performance

This paper describes the Hall B beamline and its performance during the first year of data-taking operation using the CLAS12 detector. We review the beamline instrumentation used to measure and monitor the beam. This instrumentation led to excellent beam quality for energies ranging from 2.2 to 10.6 GeV at the design luminosity of null null null null 1 null null null 0 null null null 35 null null null null null  cm−2s−1. The instrumentation...