학술논문

Signal reconstruction in a high rate environment for scintillator calorimeters
Document Type
Conference
Source
IEEE/SP 13th Workshop on Statistical Signal Processing, 2005 Statistical Signal Processing, 2005 IEEE/SP 13th Workshop on. :25-28 2005
Subject
Signal Processing and Analysis
General Topics for Engineers
Signal reconstruction
Detectors
Photomultipliers
Working environment noise
Energy resolution
Signal resolution
System testing
Calibration
Physics
Signal to noise ratio
Language
ISSN
2373-0803
Abstract
We present an algorithm to reconstruct online the energy in the TiCal detector of ATLAS. The algorithm consists in weighted sums of the digital samples of the photomultiplier signal. The weights are calculated to reconstruct the desired parameters of the signal while minimizing the noise impact on the resolution. The algorithm has been satisfactorily tested in two types of data, data obtained with a charge injection calibration system and real physics data. The results are promising given significant improvements specially when the signal to noise ratio is small as it has been designed for