A Graphics Sampler for the D  Detector G. Alverson, K. Bos, T. Burnett, F. Canelli, D. Coppage, L. Duflot, Y. Gershtein, N. Graf, S. Hagopian, P. Hamel, S. Kahn, T. McMahon, M. Narain, N. Oshima, O. Peters, H. Prosper, D. Shpakov, T. Trippe, J. Womersley, S. Youssef Presented by Sharon Hagopian Computing in High Energy and Nuclear Physics February 7-11, 2000 Padova, Italy

D  Graphics Sampler Outline Introduction D  Graphics Packages MrDatae – 3-D Graphical Toolkit D  VE – Visualization Environment Visual Alignment Package D  SCAN - Event Viewer D  Virtual Control Room Summary

UPGRADE Fiber Tracker 2T Super conducting Solenoid Central Preshower Intercryostat Detector New Systems  Calorimeter Electronics  3 Level Trigger & DAQ  Online System  Offline Computing  Shielding  Central Muon Scintillators  Forward Muon Tracking  Forward Muon Trigger Pixels  Lum. Monitor  Fw. Preshower  Silicon Tracker D  UPGRADE

Uses of Graphics Checking geometry Commissioning tests Online data quality control Developing algorithms Testing Monte Carlo data Examine physics of events Presentation of data

Open Inventor HEPVis Mesa D  Graphics OpenGL Rest of D0 software Exceed 3D Xi Graphics D  Graphics Sampler

Mr Datae - 3-D Graphical Toolkit Infrastructure - S. Youssef Framework - H. Prosper Displays - D0 Graphics Group Customized Individual Displays Integrated Event Display Simple user interface isolates graphics Useful pick feedback Details can be selected Geometry from offical system

MrDatae - Z ->  

D  Graphics Sampler D  VE - D  Visualization Environment Author - T. Burnett D  version by O. Peters and K. Bos Wireframe displays for geometry Can step thru stages of reconstruction Cascading menu under X or NT Used to check muon geometry Debug Level 3 muon trigger Display for Muon Crate commissioning

D  VE - cosmic ray muon

D  Graphics Sampler Visual Alignment Package Authors: T. Trippe, P. Hamel Uses 3-D track residual vectors, their locations, and errors. These contain enough information about tracks and detector to do alignment. Prototype: Silicon Microstrip Detector Developed new wedge shapes Found problems in geometry Work in progress

D  Graphics Sampler D  SCAN - D  Event Viewer Author - G. Alverson Based on HEPVis Twig class Integrated Event Display Hierarchical menus Picking callbacks Easy to use for examining the physics of events

D  SCAN

D  Graphics Sampler Virtual Control Room Prototype Web JAVA Applet Screens: –Main Control Room –Accelerator Status –D  Run Status –Triggering Information –Event display Screens updated automatically

D  Graphics Sampler Summary Variety of graphics packages for various needs of visualizing the detector and data. Displays have a common basis using available libraries. Useful for preparing for Run II. Modular and robust so can be used during the course of the experiment.