KLOE calorimeter paper

[Matthew Shepherd <mashephe@indiana.edu>]

This may be of interest:

http://arxiv.org/abs/0811.1377

Merging and splitting of clusters in the electromagnetic calorimeter  
of the KLOE detector

Jaroslaw Zdebik
(Submitted on 9 Nov 2008)

The work was carried out in the framework of the KLOE collaboration  
studying the decays of the phi meson produced in the DAFNE accelerator  
in the collisions of electron and positron. The main aim of this  
thesis was investigation of the influence of the merging and splitting  
of clusters in decays with the high multiplicity of gamma quanta,  
which are at most biased by these effects. For this aim we implemented  
the full geometry and realistic material composition of the barrel  
electromagnetic calorimeter in FLUKA package. The prepared Monte Carlo  
based simulation program permits to achieve a fast generation of the  
detector response separately for each interested reaction. The program  
was used to study the reconstruction efficiency with the KLOE  
clustering algorithm as a function of the photocathode quantum  
efficiency. It was also used to investigate merging and splitting  
probabilities as a function of the quantum efficiency. The conducted  
studies indicated that the increase of quantum efficiency does not  
improve significantly the identification of clusters. The influence of  
these effects was estimated for eta meson decays into 3 neutral pions  
and K_short meson into 2 neutral pions.

Comments:
Master Thesis prepared in the Nuclear Physics Division of the  
Jagiellonian University; 83 pages, 54 figures