Operating Results from NAL

The NAL accelerator achieved design energy of 200 GeV on March 1, 1972. Since that time, the main accelerator has operated as high as 400 GeV and regularly operates at 300 GeV. The highest intensity to date has been 1.8 × 1012 protons per pulse at 300 GeV. This beam has been extracted from the accelerator using a half-integral resonance system to give a slow spill over approximately 250 ms. The extracted beam is presently being split and sent into three different experimental areas. In addition, a target area in the main accelerator enclosure allows experiments to be done on the internal, circulating beam.