Package InDetSimEvent

Author

David.nosp@m.e.Co.nosp@m.stanz.nosp@m.o@ce.nosp@m.rn.ch

Introduction

This package contains the EDM classes for the Inner Detector simulation. There are three type of classes in this package:

• The hit classes. They are persistent classes and are written out as output from the Geant4 simulation and used as input for Digitization. Some other non persistent classes
• The Simulation hit Id helpers. Which are needed to reinterpret the geometry information into integers
• Other non persistent classes used during digitization processing The first two should NOT be changed, unless there is a very specific reason. In particular events have been simulated and written out with pool since release 8 and a change in these classes may result in a big loss (like all of DC2)

hit classes

The hit classes are:

• SiHit: hits in the Pixel/SCT and SiHitCollection
• TRTUncompressedHit: hits in the TRT and TRTUncompressedHitColection
• TRTHit and TRTHitCollection. Legacy

hit classes

There are two of them. These classes should be used to interpret a geometry information and produce an integer:

• SiHitIdHelper
• TRTHitIdHelper

stuff

SiCharge and SiTotalCharge are transient classes used by the Pixel and SCT digitization when charges are created as a result of the processing of the Geant hits.