Digital Signal Reconstruction in the ATLAS Hadronic Tile Calorimeter

Author

Fullana, E. ; Castelo, J. ; Castillo, V. ; Cuenca, C. ; Ferrer, A. ; Higon, E. ; Iglesias, C. ; Munar, Antoni ; Poveda, Jorge ; Ruiz-Martinez, A. ; Salvachua, B. ; Solans, C. ; Teuscher, R. ; Valls, J.

Author_Institution

Inst. de Fisica Corpuscular, IFIC, Valencia

Volume

53

Issue

4

fYear

2006

Firstpage

2139

Lastpage

2143

Abstract

We present an Optimal Filtering (OF) algorithm to reconstruct the energy, time and pedestal of a photomultiplier signal from its digital samples. The OF algorithm was first developed for liquid ionization calorimeters, its implementation in scintillator calorimeters, specifically in the ATLAS hadronic Tile calorimeter (TileCal), is the aim of this study. The objective is to implement the algorithm on the DSPs of the Read Out Driver cards in order to reconstruct online the energy of the calorimeter and provide it to the second level trigger. The algorithm is tested and compared with a plain filtering algorithm using both calibration and real data from the TileCal detector. The results are promising specially in the regions where the electronic noise contributes significantly to the resolution

Keywords

calorimeters; filtering theory; nuclear electronics; particle calorimetry; photomultipliers; position sensitive particle detectors; readout electronics; signal reconstruction; ATLAS hadronic Tile calorimeter; OF algorithm; Optimal Filtering algorithm; TileCal detector; digital signal reconstruction; electronic noise; liquid ionization calorimeters; photomultiplier signal; plain filtering algorithm; read out driver cards; scintillator calorimeters; second level trigger; Calibration; Detectors; Digital filters; Digital signal processing; Filtering algorithms; Ionization; Photomultipliers; Signal reconstruction;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2006.877267

Filename

1684077