Event Display for the Visualization of CMS Data

Lothar BAUERDICK (FNAL), Giulio EULISSE (FNAL), Christopher JONES (FNAL), Dmytro KOVALSKYI (UCSB),Thomas MC CAULEY (FNAL), Alja MRAK TADEL (UCSD), Johannes MUELMENSTAEDT (UCSD),Ianna OSBORNE (FNAL), Matevz TADEL (CERN/UCSD), Yanjun TU (UCSD), Avi YAGIL (UCSD)

October, 18-19, 2010, CHEP2010, Taipei, Taiwan

First 4 months of 7 TeV running

A candidate for production of a top quark pair in CMS, where both top quarks decay into a W and a b quark, and both W particles decay into a muon and neutrino. This results in 2 muons (light blue tracks), 2 jets tagged as b-quark jets and missing energy (from the escaping neutrinos).

Add/resize/move CMS logoAdd/resize/move Event infoAdd/resize/move/edit annotationsFish eyeSet object visibility on/offShow/hide scalesShow/hide a camera guideZoom, rotate, panChange colors/transparencyChange line widthShow/hide sub-detectorsShow with outlineShow as wireframe

Fireworks GUI is a Customized ROOT GUI

Open local/remote data fileSave/restore configurationChain data filesExport imagesGo to next/previous eventPlay eventsSet timeout for play modeFilter eventsAdd/remove collectionVisualization cutsAuto scalePer-view representationHLT and L1 triggers info

Mac/SLC5 standalone distribution3D, RhoPhi, RhoZ viewsDetailed viewsTable viewsTable column sortSpecific views for sub-detectorsSpecific view for rechitsGlimpse viewCorrelated selectionCorrelated highlightBubble helpDock/undock windowsAdd/remove views

HLT and L1 Trigger Tables

HLT and L1 trigger tables give full information about trigger menus, pre-scales, and acceptancy rate.

Lego View

Lego view shows hadronic (blue ) and electromagnetic (red ) transverse energy distribution of an “unrolled” detector in eta/phi space. Jets are shown as circles. Auto-projection from orthographic to perspective view.

Table views show user chosen information about data objects stored in a collection. Table columns can be interactively sorted.

Table View

Glimpse view gives a quick insight into total energy distribution in 3D space.

Glimpse View

Dr. JONES (cdj@fnal.gov)

Detailed view of a Track shows full information of selected track, its innermost and outermost states, vertex, all det modules associated with the track. The module state (lost, bad, inactive) is shown with a different color. All clusters and hits are shown.

Track Hits Detail View

Detailed view of the Track residuals shows the selected Track residuals in Silicon strip detector in local X-Y coordinates.

Track Residuals Detail View

Detailed view of a Muon shows full information about selected muon, its outermost and innermost states at ECAL surface, muon direction at vertex, and clustered and unclustered ECAL rechits.

Muon Detail View

Detailed view of an Electron shows full information about selected electron, its outermost and innermost states at ECAL surface, and clustered and unclustered ECAL rechits.

Electron Detail View

Event Display in the News

Online event displays installed and used in both control room at P5 and CMS Centre. The online event displays receive events from an event server supported by IT and running prompt reconstruction from an Express stream. The snapshots from P5 online event displays are published on CMS online web server.