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Bug #1842

dubious spacepoint finding

Added by Overton, Edward about 8 years ago. Updated about 7 years ago.

Status:
Open
Priority:
Normal
Assignee:
Category:
Tracker
Target version:
-
Start date:
22 April 2016
Due date:
% Done:

0%

Estimated time:
Workflow:
New Issue

Description

The space point finding seems to be generating incorrect doublet space points in some cases.

I have attached an example plot, the blue dots are points on a track and the red dots are not on a track. If the dot is filled it is a triplet and if it is not filled then it is a doublet.

The formatting of the details is as follows:
SP: x(mm),y(mm)
+ C: plane channel is_used npe

Tracker:1, Station:2
SP: 27.077350, -147.853421
+ C: 0 201.0 True 2.46755852843
+ C: 2 87.0 True 9.06126914661
UNASSIGNED:
+ C: 1 110.0 False 9.64406779661

As you can see the combination was done incorrectly and the one real hit was combined with a noise hit, followed by another real hit being unassigned to a space point.


Files

Screenshot_from_2016-04-22_13-50-58.png (8.33 KB) Screenshot_from_2016-04-22_13-50-58.png Overton, Edward, 22 April 2016 14:02
doublet_npe.cpp (2.02 KB) doublet_npe.cpp Doublet Recon code based on NPE Overton, Edward, 25 April 2016 13:14

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