Title :
First results from the SLD silicon calorimeters
Author :
Berridge, S.C. ; Brau, J.E. ; Bugg, W.M. ; Frey, R. ; Furuno, K. ; Gioumousis, A. ; Haller, G. ; Hwang, H. ; Kroeger, R.S. ; Park, H. ; Pitts, K.T. ; Seward, P. ; Weidemann, A.W. ; White, S.L. ; Zeitlin, C.J.
Author_Institution :
Dept. of Phys., Tennessee Univ., Knoxville, TN, USA
Abstract :
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 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. The authors present results from the first run of the SLC with the SLD on beamline. The calorimeters and electronics performed reliably with no major problems during a 15-week period with no access. Bhabha events were easily identified, and the 36-68-mrad region of the LMSAT was found to be approximately=100% efficient and background-free, which made it possible to measure L to be 14.4+or-0.5 nb/sup -1/ for this run.<>
Keywords :
semiconductor counters; silicon; Bhabha events; Luminosity Monitor; SLAC Large Detector; Si; Small-Angle Tagger; small-angle calorimeters; Detectors; Particle beam measurements; Particle beams; Particle measurements; Particle scattering; Physics; Printed circuits; Sampling methods; Silicon; Superluminescent diodes;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1991., Conference Record of the 1991 IEEE
Conference_Location :
Santa Fe, NM, USA
Print_ISBN :
0-7803-0513-2
DOI :
10.1109/NSSMIC.1991.258875
