Hello,
Can anyone help me understand this error. I am running a telescope alignment and I get this error when it reaches the orientation iteration of the alignment. I know that at least two planes have a large angle misalignment.
(FATAL) [F:AlignmentTrackChi2] Fatal internal error
Track Object Track cannot update plane before track has been fitted.
Cannot continue…
I do manage to run the alignment successfully using ‘straightline’ instead of ‘gbl’ and the alignment finishes without error. This does improve the residuals on the original planes that had large angle misalignments but produces a worse alignment for the other planes compared to ‘gbl’. When I try to run ‘gbl’ with the input geometry being the final geometry file of the “straightlines”, I still get the same error.
Any ideas?
Thanks,
Emma
Hi @ebuchana
huh, this is an interesting problem - the code where this error stems from is exactly the same for straight-line tracks and GBL tracks.
We have an alignment test running as part of the CI pipeline, by default using straightline as track model. But I just switched it for gbl and apart from a few failed fits during the event loop, the alignment itself runs through just fine.
May I ask which version of Corry you are using? (i.e. the commit you have checked out, in the absence of a proper release in a long time…)
Best,
Simon
Hi Simon,
Thanks for your response. I have checked (git log -4) and the result is:
commit 02811f9e67f366eb999ff2fb74b753339d1d984f
Merge: 05dfd63 c71db91
Author: Simon Spannagel simon.spannagel@cern.ch
Date: Thu Feb 22 15:43:42 2024 +0100
Merge branch 'ReadmeParticleFlux' into 'master'
ReadmeParticleFlux: change description of parameter for plot unit control
See merge request corryvreckan/corryvreckan!680
commit c71db917210e4ad7d5ee508866b42e66ea77ce55
Author: Annika Vauth annika.vauth@uni-hamburg.de
Date: Thu Feb 22 15:14:59 2024 +0100
change readme to contain correct parameter for plot unit control
commit 05dfd633d63a7de15adbfeaf2ecae6f2ab8af7b9
Merge: 03e0959 0f0f66d
Author: Simon Spannagel simon.spannagel@cern.ch
Date: Thu Feb 15 14:58:23 2024 +0100
Merge branch 'support_mp11' into 'master'
adding support of mupix11
See merge request corryvreckan/corryvreckan!679
commit 0f0f66d1083c3a2568b5817590fcb59a4d2629bf
Author: Lennart Huth lennart.huth@cern.ch
Date: Thu Feb 15 14:52:01 2024 +0100
adding support of mupix11
So I guess I am using a fairly recent version?
Thanks,
Emma
Hi @ebuchana
if you read “fairly” as “the very latest” then definitely yes, fairly recent! 
This makes it all the more weird, I just ran with the exact same version. If you would be able to share a sample file and config with me, I could have a look and see where things go wrong!
All the best,
Simon