LHCb RICH Performance in DC03

Introduction

This pages gives some performance data for the the LHCb RICH detector in the DC03 (Re-optimisation TDR) Monte Carlo productions. This production used the older SICBMC LHCb simulation program and the now obsolete RICH fortran reconstruction package. Unfortunately, only limited information is available compared to the newer productions.

Cherenkov Theta Resolution

This figures gives a comparision of the Cherenkov theta resolution obtained using an early version of the RICH C++ reconstruction, with SIBMC and Gauss simulations. It is not exactly the same version as used for DC03 (most notably the fortran reconstruction was used) but should be similar.

PID Performance versus Track Momentum

The following figures show the RICH particle identification performance, as a function of momentum. The figures of merit used are the RichHeavyID, RichLightID and kaon identifications for the 2 to 100 GeV/c momentum range, and only for forward tracks only.