CALIMERO Event Display

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CALIMERO Event Display

A 3D Event Visualization for TESLA Calorimetry
L. Aldon F. Chandez P. Gay S. Monteil
CALICE Collab.
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Out line

• Motivations
• Structure
• Main Features
• Conclusions

CALorimeter IMagE for RecO
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Motivation and framework
High granularity Calorimeters Visualisation event
(Si-W Ecal and Digital Hcal)

• Draw pretty views but mainly provide a tool for
  event analysis (study shape showers, clustering,
  track separation, ) and guideline for
  reconstruction

• Application
• user-friendly,
• versatile
• And accept future evolution (esp. wrt Geometry)

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Structure

• With respect to the previous version
• Whole architecture revisited
• New features (Navigation, files access, sorting,
  etc)

• Input files ASCII files
• .HEPEvt (Generator level)
• .HITS from MOKKA
• Cf P. M. de Freitas Talk
• Tables for ECAL/HCAL Geometry managed w/ MySQL
  database

• Graphics are handled with OpenGL GLUT, creation
  of graphics interface with Fast Light Tool Kit
  (FLTK), MySQL database, C

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Control and management
Main Window, navigation w/ Mouse or keyboard
Control Window
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Selections Standard
Generator Level after hadronisation anyway
Select an event
Select particles hits
scale
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Selections basic objets
Select volumes
Select a given track
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Points of Views
Besides Classic XY, XZ YZ views, various
center of rotation are allowed.

• wrt to a module face center of rotation is
  center of entry plate module
• wrt to a track center of rotation is origin of
  the track
• wrt to a hit center of rotation is the hit
  position it self
• 3 angles may be chosen to define the direction of
  the visualization

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Picking
Direct access to the hit information from the
screen

Standard Fields
Extra Fields (added during creation of HITS file
by user)
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Selections more complex operation
Write an elaborate selection condition in SQL
language combining information including extra
fields
Example Piece 5 and Stave 7 and Emax between
2000 and 3000 and Icode ltgt 321  Select all hits
in stave 7 of HCAL barrel w/ Energy ? 2, 3 GeV
which arent K
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Save/Load Context
Save Context Collect all informations which
defined the present situation and load them in a
dedicated file .context
Load Context recover directly the
environnement defined by the .context file
Fast recover of the situation May be
used/imposed to others events
Context file is ASCII w/ simple grammar Easily
modificated
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Conclusions

• 3D navigation
• Analysis tool w/ evoluate sorting based on simple
  grammar and environnement memory
• Open to next evolution of MOKKA simulation
• Available under Windows and LinuX plate-forms
• Future
• Improvements !
• Interfaces with reconstruction programs
• Relationships w/ general simulation tool and
  other detector visualisator (tracker system esp.)