Studies of optical mixers for use with silicon photomultipliers to ameliorate signal saturation

Author

Baumbaugh, B. ; Broughton, C. ; Burke, C. ; Ciastko, L. ; Conti, J. ; Daily, K. ; Dolezal, B. ; Heering, A. ; Karmgard, D. ; Marchant, James ; Mckenna, M. ; O´Brien, M. ; Rose, Patrick ; Sharkey, S. ; Taylor, James ; Tripepi, M. ; Ruchti, R. ; Vigneault,

Author_Institution

Univ. of Notre Dame, Notre Dame, IN, USA

fYear

2012

fDate

Oct. 27 2012-Nov. 3 2012

Firstpage

446

Lastpage

449

Abstract

We have been studying ways in which the light from several optical fibers that transmit light from scintillating tiles can be mixed and combined a single Silicon Photo Multiplier (SiPM). The purpose for mixing is to prevent a single high intensity fiber from saturating an area of the SiPM and thus causing an inaccurate reading of the overall light collected. In particular this is for use in detectors such as CMS HCAL^{1, 2} where light is transmitted from scintillating tiles in 940,.m fibers to a single photo-detector. If one tile has a large optical signal it can saturate an area of the SiPM and produce a signal lower than would be expected, resulting in an in-accurate energy measurement. The results of the test and the test setup will be described.

Keywords

optical fibres; photodetectors; photomultipliers; silicon radiation detectors; solid scintillation detectors; CMS HCAL; high intensity fiber from; in-accurate energy measurement; large optical signal; optical fibers; optical mixers; photodetector; scintillating tiles; signal saturation; silicon photomultiplier; test setup;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2012 IEEE

Conference_Location

Anaheim, CA

ISSN

1082-3654

Print_ISBN

978-1-4673-2028-3

Type

conf

DOI

10.1109/NSSMIC.2012.6551145

Filename

6551145