The main tasks for obtaining the vertex detector performance are going to be performed using the ILC framework. As a measure for the performance we are going to use the residual distribuitions of the simulated vertex to the reconstructed vertex. This is going to be done with three methods.

  • Muons from a particle gun. With this method we can examine selected areas of interest e.g. overlap regions or switcher boards
  • J/Psi decay to mu/mu. This is going to be our tool for examining the z-vertex resolution because the boosted J/Psis do not always have their vertex at the IP
  • B0 and B+- decays without background

Muon gun

  • phi is isotropic
  • theta and energy are as follows:

X 0.2[GeV] 0.5[GeV] 1.0[GeV] 2.0[GeV]
20 running running running running
40 running running running running
60 running running running running
80 running running running running

Main optimization parameters

  • Bricked x non-bricked pixel structure (B x NB)
  • 2nd layer with silicon support structure 1cm x 0.5cm
  • Variable pixel size x constant pixel size (VPS x CPS)
  • 1000 pixels along Z-axis x 800 pixels along Z-axis (PPR) @ integration time 10 us
  • 2000 pixels along Z-axis x 1600 pixels along Z-axis (PPR) @ integration time 20 us (B structure only)
  • Belle SVD2 x SBelle x SBelle upgrade

All other parameters can be modified later on in Marlin analysis ...

Mokka ILC models in the database

Name Description
VTXBelle Belle VTX Detector
VTXSBelle SBelle VTX Detector
VTXSBelleUpgr SBelle VTX Detector Upgrade
TrkBelle Belle Tracker
TrkSBelle SBelle Tracker
TrkSBelle_CPS1000_SUP5 SBelle Tracker
TrkSBelle_CPS1000_SUP10 SBelle Tracker
TrkSBelle_CPS800_SUP5 SBelle Tracker
TrkSBelle_CPS800_SUP10 SBelle Tracker
TrkSBelle_VPS1000_SUP5 SBelle Tracker
TrkSBelle_VPS1000_SUP10 SBelle Tracker
TrkSBelle_VPS800_SUP5 SBelle Tracker
TrkSBelle_VPS800_SUP10 SBelle Tracker
TrkSBelleUpgr SBelle Tracker Upgrade
TrkSBelleUpgr_CPS1000_SUP5 SBelle Tracker Upgrade
TrkSBelleUpgr_CPS1000_SUP10 SBelle Tracker Upgrade
TrkSBelleUpgr_CPS800_SUP5 SBelle Tracker Upgrade
TrkSBelleUpgr_CPS800_SUP10 SBelle Tracker Upgrade
TrkSBelleUpgr_VPS1000_SUP5 SBelle Tracker Upgrade
TrkSBelleUpgr_VPS1000_SUP10 SBelle Tracker Upgrade
TrkSBelleUpgr_VPS800_SUP5 SBelle Tracker Upgrade
TrkSBelleUpgr_VPS800_SUP10 SBelle Tracker Upgrade


  • CPS-1000 - constant pixel size along Z-axis (1000 pixels in total)
  • VPS-1000 - variable pixel size along Z-axis (1000 pixels in total)
  • SUP10 - 2nd layer: with a silicon support bridge, 10 mm wide

-- KoljaProthmann & ZbynekDrasal - 08 Mar 2009

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Topic revision: r5 - 2009-03-08 - ZbynekDrasal
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