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BaBar   Computing  Drift Chamber Software    Simulation Home  DCH - Drift Chamber Simulation  Drift Chamber software discussion    Maintained by Ernesto Lamanna  TASK FORCE Colorado University ( Patricia Rankin, Sumit Sen) Maryland DCH software page  ( Carlo Dallapiccola) Padova University ( Mario Posocco) Rome "La Sapienza" University ( Ernesto Lamanna, Caterina Perri, Fabio Ferrarotto, Francesco Safai Tehrani) The Drift Chamber simulation group implements and maintains the code needed to describe the detector in both detailed and fast simulation. The items covered  in the detailed simulation are : Geometry definition (only one geometry); Tracking  of the particle (dedicated algorithm) ; Estimation of the Hits; dE/dx; DchSimGeom is the package working in bbsim (Geant3  framework) where all the previous sections are implemented. A description of the package may be found in DchSimGeom guide . [Ernesto Lamanna, Shahram Rahatlou, Rome,  Mario Posocco, Padova] Digitization.  DchSim  is the package  where the hits produced in the detailed simulation are converted in digis introducing intrinsic resolution of the detector and electronics. [ Patricia Rankin, Sumit Sen, Colorado]     The new fast approach is implemented using GEANT4 and making working  modules in the reconstruction framework. The geometry  may be defined using multiple models that cover both full and fast simulation.  The code is divided in two packages  covering the following items: Geometry definition; Tracking  of the particle; Estimation of the Hits; BgsDchSim is the package working in Bogus (Geant4  framework) where all the previous sections are implemented. A description of the package may be found in BgsDchSim guide . [Ernesto Lamanna,  Caterina Perri,  Shahram Rahatlou,  Francesco Safai Tehrani, Rome]  dE/dx; Fast tracking. DchBgsModules  is the package  working in the reconstruction framework where the hits produced in BgsDchSim are fitted to make track reco like objects . [  Carlo Dallapiccola, Maryland];   The dE/dx simulation is implemented in  both the detailed and the fast Monte Carlo  using specific parameterizations obtained from experimental results  a from studies of single cell through dedicated codes. [ Mario Posocco, Padova] News Fast Monte Carlo G4 based. Slac July 98 by Carlo Dallapiccola [ps]. Aslund-Bogus comparison: plot1 [ps]; plot2 [ps];   Discussions Few considerations about tracking of low momentum particles in DCH. December 14, 1998 Volume Structure in the Simulation db. October 14, 1998 MDC2 considerations in the common Reco-Simu meeting. February 4, 1998 Misalignment in bbsim Drift Chamber Simulation for MDC2   Meetings Few considerations on the low momentum particle tracking in DCH - Common Simu/Reco phone meeting Jan 20 1999 . Status and description of the Bogus fast tracking simulation. C. Dallapiccola [ps] - October Coll. Meeting, 1998 - Simu session. DCH simulation DB. F. Ferrarotto - October Coll. Meeting, 1998 - Simu session Dch Status Report E. Lamanna - October Coll. Meeting, 1998 - DCH session. Db structure proposal for the DCH simulation. F. Ferrarotto - October 14, 1998 DCH simulation: bbsim status report; Geant4 based simulation. September 98 Simulation Review. DCH simulation inside the framework. Presented at the Annecy software meeting June 1998. Simu Agenda for May 13, 98 common Reco-Simu meeting Simu Agenda for April 29, 98 common Reco-Simu meeting Documentation on DchSimGeom prepared for the Feb 23, 98 Simulation Review ( Ernesto Lamanna ) Agenda and Material for Dec 10, 97 common Reco-Simu meeting SLAC Collaboration meeting (Nov 19, 97). Ernesto Lamanna Implementation Schedule at Bristol Simu review (July 25, 97). GEANT 4 workshop at Palaiseau June 19-21,97 contributions. Schedule presented at the internal simulation review of 5/27/97, Ernesto Lamanna Implementation schedule as of 5/15/97, Ernesto Lamanna Documentation prepared for the 10/96 Simulation Review     Releases   For comments/questions  contact lamanna@roma1.infn.it