PANDA collaboration meeting2.-4. June 2004 simulation statusOverview New Framework  why  status  schedule Simulation subdetector  Forward spectrometer  EMC (TS) Status PID Benchmark channel  Status

PANDA collaboration meeting2.-4. June 2004 simulation status New Framework not enough manpower for development switch to well proved framework  only few on the market decision: BaBar framework experiences in PANDA collaboration request to BaBar computing management  O.k but with Copyright

PANDA collaboration meeting2.-4. June 2004 simulation status New Framework object-oriented environment: Compilation time for develpment shorter digitization, event-mixing, detector response reconstruction: vertexing, tracking, PID analysis: many fit routines available Advantages

PANDA collaboration meeting2.-4. June 2004 simulation status New Framework Simulation Architecture

PANDA collaboration meeting2.-4. June 2004 simulation status New Framework Status PANDA source code in new environment embedded (done) implementation in CVS (done) removal of database (30% done) implementation of detector geometry in Bogus  removal of BaBar geometry: dummy version (done)  implementation of PANDA geometry (to do) modification of reconstruction & analysis (to do)

PANDA collaboration meeting2.-4. June 2004 simulation status New Framework Time schedule idea: study of benchmark channels for TR in new framework deadline event production: Second week of August implementation has to be finished until beginning of August

PANDA collaboration meeting2.-4. June 2004 simulation status Detector development: FS simulation and reconstruction of EMC (FS) is working idealized setup: appr PWO crystals implementation of more realistic setup has to be done  lead glass calorimeter? (talk in subgroup meeting: Piotr Hawranek)

PANDA collaboration meeting2.-4. June 2004 simulation status Detector development: FS new idea: Forward dipol (HERMES)  iron plate  shields the beam from the dipol field advantage:  no dipol behind FS disadvantage:  no acceptance between 0°-1° first calculations:  magnetic field: 1T  beam region: 100 mT HERMES: Side view of dipol with shielding

PANDA collaboration meeting2.-4. June 2004 simulation status Detector development: EMC (TS) gamma-efficiency vs. space between crystals default value: 2.0 mm space variation: 2.0mm-0.3mm 2000 events simulated: eff. increases dramaticaly by reducing the space target point geometry modification: point of intersection app. 2cm backward

PANDA collaboration meeting2.-4. June 2004 simulation status Reconstruction: PID PID problem with DIRC and RICH different efficiency for positive and negative particles reco with old tracker interface modified reconstruction: PID works properly (Carsten Schwarz, GSI)

PANDA collaboration meeting2.-4. June 2004 simulation status Benchmark channel (Jan Zhong, Bochum) problem: assignment of gammas to corresponding mesons possiblilities: requirement: No kinematic fit  spatial & energy resolution for each setup strategy: Probabilities for each hypothesis

PANDA collaboration meeting2.-4. June 2004 simulation status Benchmark channel (Jan Zhong, Bochum) calculation and via  best combination  least cuts  total energy, momentum  efficiency: more than 20% (talk in subgroup meeting)

PANDA collaboration meeting2.-4. June 2004 simulation status Benchmark channel (Alexander Golischewski, Bochum) (Agnes Lundborg, Uppsala) comparison: EMC setup with constant crystal length and extended cystal length improved efficiency and resolution with extended crystal length background studies still under investigation

PANDA collaboration meeting2.-4. June 2004 simulation status Benchmark channel (Francesca Ottone, Pavia) events analysed with cuts  energy <E(CM)<3.479 GeV  momentum P(CM)<0.5 GeV  position of vertex D0<0.5mm; -0.5mm<Z0<0.5mm  distance: primary to vertex < 2.5mm

PANDA collaboration meeting2.-4. June 2004 simulation status Benchmark channel (Andrei Sokolov, GSI/Giessen) selector for most important D°-decay modes mass difference method  improvement of resolution still problems:  Kaon & Pion identification  matching: charged particles with Cluster in EMC(TS) (talk in subgroup meeting)

PANDA collaboration meeting2.-4. June 2004 simulation status Benchmark channel (Marco Destefanis, Giessen) asymmetry in efficiency: lifetime  60mm instead 78.9mm  no energy loss in track reco  new framework: Kalman fitter (talk in subgroup meeting)

PANDA collaboration meeting2.-4. June 2004 simulation statusAgenda Simulation subgroup meeting June 2th 15:30-15:36: General 15:36-15:50: Status of new framework (Matthias Steinke) 15:50-16:04: Simulation of FS (Piotr Hawranek) 16:04-16:18: (Andrei Sokolov) 16:18-16:32: (Olaf Hartmann) 16:32-16:46: (Jan Zhong) 16:46-17:00: (Marco Destefanis)