Linear Collider Forum: Tracking & Vertexing » Default Analyses in MarlinTPC

Default Analyses in MarlinTPC [message #1459]

Fri, 02 May 2008 05:59

killenberg
Messages: 125
Registered: July 2005
Location: CERN

I would like to discuss which default analysis processors should be available for the large prototype (LP) TPC.

Currently available (MarlinTPC r1076):

BiasedResidualsProcessor
Distribution of residuals wrt. track where all hits are included in track fit. Works for straight tracks and helices.
HitAndTrackChargeProcessor
Histograms of charge per hit, charge per track and charge per track length.
LinearGeometricMeanResoutionProcessor
Calculate residuals with the test hit included and excluded from the track fit. Implementation for straight lines using linear regression.
LinearThreePointResolutionProcessor
Calculate residuals using the three-point method. Implementation for straight lines.
TimePixClusterSizeProcessor
Size of clusters (number of pixels and cluster radius) on the TimePix chip
TimePixOccupancyProcessor
Count how many times a pixel has been hit on the TimePix chip
TimePixTOTDistributionProcessor
Distribution of TOT values of all pixels on the TimePix
XYZDistrubutionProcessor
Distributions of reconstructed x, y, and z coordinate of all hits in an event
XYZDistrubutionProcessor
Distributions of reconstructed x, y, and z coordinate of hits on tracks

Also needed:

ResidualsReferenceTrackProcessor
Distribution of residuals wrt. reference track
PadOccupancyProcessor

The geometric mean processor should be extended to helix tracks (lower priority since this method is time consuming. The biased residuals are ok for long tracks with many hits and can be corrected by sqrt( nHits / (nHits - nDoF) ) ).

What else is missing?

Martin Killenberg

CERN
martin.killenberg@cern.ch

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