Alignment of CMS structures using silicon photo-detectors

Author

Virto, A.L.

Author_Institution

IFCA (Inst. de Fis. de Cantabria), Univ. de Cantabria, Santander, Spain

fYear

2011

fDate

23-29 Oct. 2011

Firstpage

1113

Lastpage

1115

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2011 IEEE

Conference_Location

Valencia

ISSN

1082-3654

Print_ISBN

978-1-4673-0118-3

Type

conf

DOI

10.1109/NSSMIC.2011.6154583

Filename

6154583