Project

General

Profile

Bug #1963

Tracker geometry issue

Added by Rogers, Chris over 3 years ago. Updated over 3 years ago.

Status:
Closed
Priority:
Normal
Assignee:
Start date:
26 March 2018
Due date:
% Done:

100%

Estimated time:

Description

Still trying to track down the chi2 anomaly... I reran MC with noise switched on (#1962). It didn't fix things. I just checked the tracker geometry using Chris Hunt's python API and... looks like there is Helium where there should be glue. Looks suspicious...


Files

tku_tp.png (44.1 KB) tku_tp.png Rogers, Chris, 26 March 2018 11:53
plots.tar.gz (2.74 MB) plots.tar.gz Rogers, Chris, 26 March 2018 11:53
tku_tp_zoom.png (37.4 KB) tku_tp_zoom.png Rogers, Chris, 26 March 2018 12:01
fix_tracker_He_bug.py (533 Bytes) fix_tracker_He_bug.py Superceded Rogers, Chris, 26 March 2018 15:57
tku_chi2_9_0.png (21.6 KB) tku_chi2_9_0.png Rogers, Chris, 26 March 2018 15:57
fix_tracker_He_bug.py (1.37 KB) fix_tracker_He_bug.py Broken - Hydrogen content was set wrong Rogers, Chris, 26 March 2018 18:11
fix_tracker_He_bug.py (1.37 KB) fix_tracker_He_bug.py Rogers, Chris, 26 March 2018 18:17
#1

Updated by Rogers, Chris over 3 years ago

Nb: in the plot, yellow is Helium and Green is Polystyrene. There is just a bit of red which is steel.

#2

Updated by Rogers, Chris over 3 years ago

Just a quick zoom to check the fibre geometry...

The apparent circles in previous plot are aliasing features.

#3

Updated by Rogers, Chris over 3 years ago

Small script to hack in correct geometry

#4

Updated by Rogers, Chris over 3 years ago

chi2 plot

#5

Updated by Rogers, Chris over 3 years ago

Following some email back and forthage, I added in Rencast as the glue (thanks to Chris Hunt). There is a script attached to set it up. Do

python fix_tracker_He_bug.py /path/to/geometry

#6

Updated by Rogers, Chris over 3 years ago

Fixed a typo...

#7

Updated by Rogers, Chris over 3 years ago

  • Status changed from Open to Closed
  • % Done changed from 0 to 100

This appears to be fixed. We still don't quite know the density, but it works okay for now.

Also available in: Atom PDF