next up previous
Next: RPC Pattern Comparator Trigger Up: Simulation of the Global Previous: Introduction

Simulation Chain

A set of 100K events with a single muon (both charges) was generated with

Multi-muon efficiencies for uncorrelated 2, 3 and 4 muons are extracted from similarly generated samples of 10K events each.

The low- range (< 5 GeV/c) has been excluded on purpose in our main data sample, because there only 2 detector planes are hit in most of the cases. To study this low- range, we separately generated a sample of 10K events. The restriction to the barrel region was dictated by the non availability of CSC trigger information to feed the Muon Track Finder (MTF). The simulation study was performed using the CMS simulation package CMSIM 111 [2] based on GEANT. After digitization the necessary trigger reconstruction information was extracted from the RPC simulation routines [3] and from a preliminary version of the Muon Track Finder (MTF) that was successfully included into CMSIM for the first time. The calorimeters were switched on to act merely as a medium.

The Global Muon Trigger algorithm was set up to read its input from the FORTRAN common blocks where the results of the RPC and MTF simulation are stored. The output of the simulation was written to an HBOOK n-tuple, containing the output information of both RPC and DTBX, plus the combined result from the Global Muon Trigger algorithm.

  
Figure 1: Schematic layout of the muon trigger.





Norbert Neumeister
Fri Jul 25 14:40:08 MET DST 1997