Review of Slc Performance*

The SLAC Linear Collider (SLC) has begun a new era of operation with the SLD detector. During 1991 there was a first engineering run for the SLD in parallel with machine impravements to increase luminosity and reliability. For the 1992 run; a polarized electron source was added and more than 10,OOOZ~with an average of 23% polarization have been logged by the SLD. This paper will discuss the performance of the SLC in 1991 and 1992 and the technical advances that have produced higher luminosity. Emphasis will be placed on issues relevant to future linear colliders such as producing .and maintaining high-current, low-emittance beams and focusing the beams to the micron scale for collisions. Introduction-_ The SLAC Linear Collider (SLC) is a pioneering machine which has demonstrated the viability of linear collider technology for the next generation of high-energy electron-positron acceleiators. Construction of the SLC was completed in 1987 and, after two years of commissioning, the first physics run with the Mark II detector began in 1989. In late 1990, the Mark II experiment was complete and the new state-of-the-art SLD detector was installed. During 1991 there was a first engineering run for the SLD combined with an intensive program of machine development resulting in a factor of 4 increase in the peak luminosity and greatly improved reliability. For the 1992 run, a polarized electron source' was installed and successfully commissioned. Average luminosity has increased by another factor of 4 and further improvements are expected from higher beam intensities and better optimization of beam size at the interaction point.