First results from the SLD silicon calorimeters

The small-angle calorimeters of the SLAC large detector (SLD) were successfully operated during the recent SLAC linear collider (SLC) engineering run. The luminosity monitor and small-angle tagger (LMSAT) covers the angular region between 28 and 68 mrad from the beam axis, while the medium-angle silicon calorimeter (MASC) covers the 68-190-mrad region. Both are silicon-tungsten sampling calorimeters. The LMSAT employs 23 layers of 0.86 X/sub 0/ sampling, while the MASC has 10 layers of 1.74 X/sub 0/ sampling, while the MASC has 10 layers of 1.74 X/sub 0/ sampling. The authors present results from the first run of the SLC with the SLD on beamline.<
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