Date: 15th July 2015
Time: 15:30 UK time
Attendance: Melissa, John, Chris Hunt, Adam, Paul K.
Agenda and Minutes¶
Actions from Last Meeting¶
- Prepare a tag out lock out procedure to stop people turning things off that we don't want them to (He etc. - Add the above to the controls and monitoring alarms so that if the above happens we know - Pierrick. - Ongoing
- Add to John Govans' rota for daily walk round to test our setup. - Pierrick. - Ongoing
- Multiple tracks per Tracker. - Durga - no update
- Add online recon to trunk - MU - done
- Check with DL to move interlocks after first user run - MU - Ongoing
1. Status of hardware, commissioning work and ongoing plan EO, AB, CMW, PR, MU¶
- Evolving schedule is online at http://micewww.pp.rl.ac.uk/documents/141.
- Electronics in okay shape at the downstream end
- Gain wasn't as high on the upstream so calibrated to a little higher noise on the downstream end; but will adjust the noise down a bit
- Not massively more noisy, 50% more noisy in the downstream than the upstream
- Just finished going through the bad channels downstream
- 4 on 4 off pattern means missing bank in the readout
- Ed and Paul will be at RAL from tomorrow to take a look at the electronics, fix the gain to reduce the noise and to look at the bad bans issue.
- Ed and Chris Heidt have been working together to understand hot/dead channels. The idea is to blank out dead channels and to poss raise the npe level on hot channels
- 0.4% have oversaturated events caused by all TripTs Ed will look into it this week. This can be fixed with a cut implemented at the unpacker stage. ongoing.
2. Software Software: PK, AD, CHunt, CHeidt¶
- what should we do about hot and dead channels? Should this go into CDB what type of structure do we need?
- Chris Hunt has seen up to 5 multiple tracks per trigger (likely to be due to decays).
Geometry, Calibrations, Configurations, CDB - C. Heidt¶
- All in CDB. Has not made it into last release though - ACTION
- In a good state waiting on Durga for multiple tracks per Tracker.
Pattern Recognition - AD,¶
- No method to get multiple tracks per trigger as not available in MC.
- Happy now with straight line track fitting. However there are still some outliers that have to be understood.
- Helical tracks would be interesting to have but may not be in the next user run. Only 1% with more than 1 track in each tracker.
Online Displays - MU¶
- Committed and in latest release. Need to add Kuno plot and info box.
- PK to request a meeting three weeks from now to determine plots for online and offline monitoring following the data analysis works.
Performance and Analysis - PK¶
- Data handling has improved significantly, no data on this yet as its a moving target improving all the time.
Tracker Software Paper and Documentation - AD, PK DR¶
- See https://code.launchpad.net/~phuccj/maus/scifipaper PLEASE LOOK AND REVIEW
- C. Heidt: MC documentation coming along
Analysis of first data from run 01.a¶
- Clusters (Hunt) - okay, statistics make sense
- Space points (Uchida) 25% 2 cluster SPs the rest 3 cluster SPs
- Pattern recognition (Hunt, Dobbs) - Residuals between space points and track lines is okay; no issues with "bad events", Question: What is the track finding efficiency? Note that we will likely have to take a "look it works" run once the DAQ is straightened out
- Track fit (Hunt) - Each tracker has some poor residual events which seem to have good residuals in pattern recognition; sounds like Kalman is being a pain
- Targetting Kalman algorithm rather than the alignment per se
- Some tracks not reconstructing very well
- Trying to understand why the tracks are not reconstructing well
- Maybe pion contamination? Maybe muon decay? Can exclude pions? Under investigation
Chris Hunt has some data analysis scripts that all can use and has some processed data files:
While the Grid Processing of Data is under development, some batch processed data, from the recent runs, is available on the RAL PPD machines in the directory:
Please be aware that it was processed with an experimental branch of MAUS due to the requirements of the software commissioning. If you experience some issues please try merging the updates available in the launchpad branch:
and try again. If you still experience issues, please let me know - C Hunt.
Kalman alignment looking good with some outlying residuals. This cannot be the only way to perform alignment as the SW must be checked with the alignment. Currently there are a lot of heads above the parapet.
Melissa is using a macro to look at US and DS internal alignment as well as Tracker to Tracker alignment, for 3 spacepoint tracks.
John N will look at multiple scattering comparing diffuser in and out.
Paul and John could use milipede for full alignment study
Chris R and Sophie will look at alignment with field on.
- Requirements for 01.b
Take more alignment data 30k to 300k tracks needed....
5. Optimising the DAQ and Controls and Monitoring - EO, AB, PR¶
- 50% done, but not enough time to fully go over before beam. Davids original code for MDR3 and new code to come, after first data.
6. MICE hall, inc Services and requirements : CM¶
- Helium fill
- Daresbury electronics: vacuum, tracker interlocks
- Not yet able to test against multiple tracks per trigger with MC -Action for Durga
8. Tracker Documentation¶
We need to produce documentation for the control room and ISIS, for Steve B. We cannot necessarily get that far with operations and startup as we are not yet working with the CandM as we will but we can write something and finalise safety details.
Need to add startup and operations procedure to the document.
8.1 Startup Procedure¶
8.2 Operations Procedure¶
8.3 Tracker Online Emergency Procedure¶
- We have been asked to provide documentation for ISIS and eventually shifters in what to do in an emergency situation for the Tracker when running
Documentation to Include:
- schematics of the system
- a list of associated checklists at power on, and who works through them.
- a list of instructions to shifters on how to operate and monitor the system
- emergency shutdown instructions
- power-up instructions
- trouble-shooting : what to watch for
- a list of regular maintenance and safety checks
- A beta version is available at http://micewww.pp.rl.ac.uk/projects/tracker/wiki/TrackerOperationsDocs - MU
5. Other Items¶
- Installation Manual - GB MU - ongoing
- LED system - EO - External used for calib, Internal not used since Dec but will be used after gain and pedestals determined.
- Hall probes - MU - Electronics readout devised and computing needs obtained. Cabling to be made.
- Startup and operations procedure to be added to the ISIS Tracker user document. - MU
- Calibration is in good state to go in CDB. Has not made it into last release though - C Heidt
- Multiple tracks per Tracker. - Durga - no update
- Request a meeting three weeks from now to determine plots for online and offline monitoring following the data analysis works. - PK
- Prepare a tag out lock out procedure to stop people turning things off that we don't want them to (He etc. - Add the above to the controls and monitoring alarms so that if the above happens we know - Pierrick. -
- Add to John Govans' rota for daily walk round to test our setup. - Pierrick. -
- Check with DL to move interlocks after first user run - MU -
- The four digit company id: 4673 (callers from outside the UK)
- The pin number: 419357
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