Quartz Detector for the SuperHMS Spectrometer at Hall-C Jefferson Lab
ORAL
Abstract
We have developed and constructed a quartz hodoscope to be part of the trigger system for the Super High Momentum Spectrometer (SHMS). The SHMS spectrometer will play a central role in carrying out the 12-GeVphysics program at Hall-C Jefferson Lab. The hodoscope consists of twenty one fused silica bars. Each bar is 125-cm long, 5.5-cm wide, and 2.5-cm thick. It is viewed by a UV-sensitive PMT on each end. The quartz hodoscope task is to provide a clean detection of charged particles, a high level of background suppression, and an accurate tracking efficiency determination. We present results of tests leading to the construction of the hodoscope, as well performance test results of the completed detectors such as detection efficiency and position resolution.
*This work was supported in part by the National Science Foundation through the collaborative MRI grant \# 0722803 and research grant \# 1308251
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