Status of the Control System for the CLAS Detector at Jefferson Lab

A control system for Hall B at the Thomas Jefferson National Accelerator Facility is being developed within the framework of the Experimental Physics and Industrial Control System (EPICS). The Hall B equipment currently under EPICS control includes numerous beam line devices, high voltage power supplies, detector gas systems, and safety systems. The status of the control system is described. 1 Introduction The Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab provides a unique tool for basic research in nuclear physics. The central instrument of CEBAF is a superconducting electron accelerator with a maximum energy of 4-6 GeV, a 100% duty cycle, and a maximum current of 200 ¯A. These excellent beam characteristics allow for novel experiments that are being used to develop a quarkbased fundamental understanding of nuclei. The electron beam at CEBAF is used simultaneously for scattering experiments in three halls that contain complimentary experimental equipment. Hal...