The MIT-Bates Linear Accelerator Center

The MIT-Bates Linear Accelerator Center is an electron scattering facility for basic research in medium energy nuclear physics. It consists of a 1 GeV 2.856 GHz linear accelerator and recirculator, two main experimental halls, and the 190 m circumference South Hall Ring (SHR). Both polarized and unpolarized electron sources are available. The SHR can be operated in storage mode, providing high current beam for use with internal targets, or in pulse-stretcher mode, using resonant extraction to deliver high duty factor beam to fixed target experiments. Spin control is installed for both stored and extracted beams. Extensive beam diagnostics are available on all beamlines. These include beam position monitors with multiple data acquisition modes, beam current monitors covering several orders of magnitude in current and frequency response, wire scanners, polarimeters, and so on. Details and applications of the Bates instrumentation are presented.