SLAC Scanning Processor (SSP)

Two SLAC scanner processors (SSP) recorded events which were finally written to tape. The two SSP's, arranged as master and slave, were used in the data acquisition system. The front-end master SSP input OR board and IWC data and the slave SSP read the remaining data and checked the pattern of cell hits in the drift chamber. All event data including those contained in the FBTDC and CAMAC modules were read out to a 512 kbyte data memory. Once this data memory got filled, the SSP would signal the slave to copy over the data buffer to its own memory. A VAX station 3200 then collected the data from the slave SSP and copied it onto a 8 mm data tape.

In the following chapter, we describe the trigger and acceptance studies based on the May-June, 1997 data. This was done in order to determine the optimum running conditions for the final production run of April-May, 1999.