Actions
2015-11-17-MEMO-CSw¶
Offline:¶
- Tracker sign flip
- We observe a sign flip in x when connecting TKU to TOF1 & TKD to TOF2
- TKU and TKD are consistent with each other
- In the MC, there is no flip in x, but there is a sign flip in y in the MC
- For now focussing on real data:
- The channel mapping looks OK
- Verified by taking some data with different bits of the tracker turned on/off
- The channels (at digit-level) show up exactly where expected based on understanding of tracker layout and drawing
- The spacepoint position appears flipped
- Points to somewhere in the digit->spacepoint bridge
- could be either description of the geometry, or interpretation (code-handling) of the geometry, or reconstruction code
- AD has looked through the geometry and believes it agrees with drawing
- CHeidt believes the space-point algorithm is doing the right thing, given its inputs.
- CHeidt and AD working through it
- CHeidt has a "fix", which does fix it, but it is arbitrary.
- EO and DR have just started looking at the code independently
- The channel mapping looks OK
- Tracker momentum reconstruction
- CHunt has started looking into it this week, dissecting the reconstruction routines
- MC
- Setup on offrec01, using G4BL 3-200 generated by JN
- Processed a few to check scripts and speed, but holding off until (various) reconstruction issues are resolved
- Geometry
- the EMR geometry has been fixed by RB (sensitive detector definitions in the GDML description)
- FD needs to validate it
- the EMR geometry has been fixed by RB (sensitive detector definitions in the GDML description)
Infrastructure¶
- Failover tests scheduled for tomorrow (Nov 18)
- trigger failover of CDB and servers, recover, document procedure
Updated by Rajaram, Durga about 8 years ago ยท 2 revisions