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Gabriel Musat L.L.R. Ecole polytechnique ECFA-DE
SY Linear Collider Workshop Amsterdam, April 1-4,
2003
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What is Mokka?

• Developped at L.L.R. since the end of 1999.
• Became de facto the reference for the
  calorimetry studies shown in the T.D.R.
• Great news became the Geant4 detailed
  simulation tool for all detector modules for the
  F.L.C. AND calorimeter prototypes.

Gabriel Musat L.L.R. Ecole polytechnique
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Bug fix in Geant4-05

• PI Reconstructed Energy less than 0.8 Real
  Energy
• Before 10
• After 14.7

Gabriel Musat L.L.R. Ecole polytechnique
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Gabriel Musat L.L.R. Ecole polytechnique
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The CGA API and the reconstruction

• Example, a 50 GeV pi in ECAL
• the total number of X0 from the entrance point in
  ECAL is required

Gabriel Musat L.L.R. Ecole polytechnique
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Mokka kernel - Common Geometry Access API

• New java/CGA sub-directory
• CGARunManager class implemented using JNI
• CGATest - example
• New examples/CGA sub-directory
• F77 and C examples

Gabriel Musat L.L.R. Ecole polytechnique
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Gabriel Musat L.L.R. Ecole polytechnique
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Mokka detectors - new mask
Karsten Buesser, January 2003
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Mokka detectors - new mask

• New sub-detector mask03 and new detector model
  D09M1
• The mask doesnt collect hits
• LAT module implemented with a material density
  equal to half tungsten density
• LCAL module not implemented

Gabriel Musat L.L.R. Ecole polytechnique
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Mokka detectors - New model ProtoEcalHcalRPC
Y
Hcal prototype a Hcal module in a cube format
(1 m3), built with RPCs
Ecal prototype old prototype already available
in Mokka
X
Beam
Gabriel Musat L.L.R. Ecole polytechnique
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Mokka detectors - in development (not yet
integrated)

• Detector model DT01 reflecting the BRAHMS
  detector (Ties Behnke)
• NLC (XML) detector model (Ties Behnke)
• CMOS model of VxD (Damien Grandjean)
• SET implementation (LPNHE Paris)
• Hcal GEM (Venkat, University of Texas at
  Arlington)

Gabriel Musat L.L.R. Ecole polytechnique
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Mokka kernel- future developments I

• Modify the registration scheme for new detector
  drivers
• implement the Control class as a singleton
• add a static member to the driver class
• Put reference material definitions in the DB
• Put specific materials in the sub-detector driver
  
• add a virtual method
• put material definitions in the sub-detector DB
• Improve the Event Display

Gabriel Musat L.L.R. Ecole polytechnique
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Mokka kernel- future developments II

• Put MySQL scripts in the DB
• a) identify sub-detector master parameters
• b) compute size and placements of each detector
  piece as function of a)
• c) translate b) into G4 objects
• Eventually put XML files in the DB

Gabriel Musat L.L.R. Ecole polytechnique
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Mokka kernel- future developments III

• Add cellIndex method to CGA
• (P S M I J K) gt X Y Z
• P, S, M detector piece, stave, module numbers
• I,J the cell coordinates in the cells matrix
• K Sensitive (Si or scintillator or gas) layer
  number
• X,Y,Z the cell centre in world coordinates

Gabriel Musat L.L.R. Ecole polytechnique
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Mokka - collaboration support

• Detector development integration
• DB access in Write mode via accounts
• Install Mokka CVS repository on pollin1.in2p3.fr
• global access
• sub-directories of Mokka
• Data server for simulated events on
  pollinclb.in2p3.fr
• Software documentation

Gabriel Musat L.L.R. Ecole polytechnique