Fireworks FAQ

What do I see and and what does it mean?

  • barrel stand alone muon (CRUZET3). Short blue lines are muon segments, which are positioned in the global coordinates using simulation geometry. Blue cross is a 2D segment without z information. Red line is an extrapolation of the muon using muon fit information in global coordinates. Mismatch can be attributed to the difference between reconstruction geometry with alignment and simulation geometry.
    barrel_sta_muon.gif

  • Rho-Z view of a track with significant impact parameter. Discontinuity in the trajectory is a "feature", because its not a side view projection, but rho_-z. The sign is assigned based on sign of _y coordinate, but it's not y coordinate. If the track has significant impact parameter (d0), it's minimal rho is d0.
    62966_3274141.gif
Topic attachments
I Attachment History Action Size Date Who Comment
GIFgif 62966_3274141.gif r1 manage 3.8 K 2008-10-03 - 17:20 DmytroKovalskyi Rho-Z view of a track with significant impact parameter
GIFgif barrel_sta_muon.gif r1 manage 9.8 K 2008-08-17 - 23:14 DmytroKovalskyi barrel stand alone muon (CRUZET3)
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Topic revision: r3 - 2008-10-03 - DmytroKovalskyi


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