Title :
Alignment of CMS structures using silicon photo-detectors
Author_Institution :
IFCA (Inst. de Fis. de Cantabria), Univ. de Cantabria, Santander, Spain
Abstract :
An important part of the muon alignment system in CMS relates the positions of barrel and endcap muon chambers to the tracker body in a common reference frame. This system, called the Link Alignment System, uses a distributed network of Amorphous Silicon Position Detector sensors (ASPDs) connected by laser lines. This optical network is complemented by additional displacement and inclination sensors. We describe the Link Alignment System and its performance, with emphasis on the characteristics and performance of the silicon photo-detectors.
Keywords :
muon detection; optical links; photodetectors; position sensitive particle detectors; silicon radiation detectors; ASPD; Amorphous Silicon Position Detector sensors; CMS structure alignment; Link Alignment System; barrel muon chambers; distributed network; endcap muon chambers; inclination sensors; laser lines; muon alignment system; optical network; silicon photo-detectors; tracker body; Board of Directors; Lasers; Magnetosphere; Sensors; Size measurement; Strips; Wavelength measurement;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2011 IEEE
Conference_Location :
Valencia
Print_ISBN :
978-1-4673-0118-3
DOI :
10.1109/NSSMIC.2011.6154583
