Experience with On-Line Bubble Chamber Measuring Machines

About four-thousand events have now been measured at ANL using three measuring machines, each equipped with a small Recomp II computer. The computer has a 4K memory of 40 bit words and has floating point hardware. The computer guides and, in a sense, watches over the measurer, performing many elementary checks of the measuring process. A space reconstruction is not attempted, but sufficient checks are made to eliminate most mistakes and inaccuracies which would later cause failures during the reconstruction process.