Marco Pieri
Universita` di Firenze
Member of L3 Collaboration
AbstractThe L3 simulation program, based on the GEANT package, has been intensively used to produce the events needed for the L3 analysis. After six years of operation of the L3 detector over 30 million events have been fully simulated in the L3 setup.
The simulation having to match the precision reached in the experiment, a lot of effort has been put to reach the best agreement of the simulated data with the real detector response. In addition to the careful tuning of the GEANT tracking parameters many time dependent effects which affect the response of the detector, like dead channels and inefficiencies, have been taken into account.
The design principles and the general organization of the program are described and detailed comparisons with the data recorded by the L3 experiment are shown.
In order to simulate the large number of events required, inside the L3 collaboration many tools have been developed to set up a worldwide distributed event simulation and to maintain an accurate bookkeeping of the simulated events. This allows to fully exploit the computing resources of the institutes involved in the L3 experiment and to be able to satisfy the need of a very large amount of CPU time.
The current status of our experience in simulating a large number of events with the highest possible precision is reviewed.
The simulation of the L3 detector, which is one of the largest detectors currently in operation, could be considered as the starting point for the simulation of the next generation of high energy physics detectors which will start taking data after the year 2000.
Submitter's name: Marco Pieri
Institution: Universita` di Firenze
Address: L.go Fermi, 2, 50125 Firenze, ITALY
e-mail: PIERIM@CERNVM.CERN.CH
Phone number: +39/55/2307622
Fax number: +39/55/229330
Author: Marco Pieri,
Universita` di Firenze,
Member of L3 Collaboration
Topic Area: Analysis (or Computing)