1. Christoph Blume Offline Week, July, 2008
TRD Status
Christoph Blume
Offline Week, July, 2008

2. Outline TRD tasks in project planner Geometry Other topics
Reconstruction  Alexandru
HLT Status

3. Project Planner: TRD
TRD directory:
FDR directory:

4. TRD – Calibration/Online – DCS
Pretrigger and configuration file (Christoph, Frederick) 30/06/08
Preprocessor implementation done
Reads file from FXS
XML parser in pre processor for data conversion to OCDB
In SVN and runs success fully in preprocessor tests

5. TRD – Calibration/Online – DCS
Check DCS data points 30/09/08
DCS side:
File format defined: XML
Communication to DCS boards: Instructions via CMD channel, return XML file via ACK channel
Test setup existing
To be defined still:
Final datapoints for configuration and pretrigger files
Also: check of already existing data points
Seems to be ok now ...

6. TRD – Calibration/Online – DAQ
Two DAs on DAQ
Pedestals algorithm (run type: PEDESTAL)
Drift velocity (run types: PHYSICS or STANDALONE)
Details: see Raphaelles presentation last offline week
After some iterations the DAQ DAs are now finally operational as intended at P2 (Raphaelle)
Tested with real cosmics data

7. Preprocessor status (16/6/08)

8. TRD – Raw Data Format
Raw data format check and handling of data corruption (MinJung, Christoph) 31/07/08
Adapt the raw data reading to eventual changes in the format. Handling and monitoring of raw data corruption
Final (?) update of AliTRDrawStreamTB last week
Update of raw data simulation (MinJung) 30/09/08
AliTRDrawStreamV2 (sim.) and AliTRDrawStreamTB (test beam and cosmics run)
Adapt raw data simulation to latest changes  only one version
New manpower assigned (WooJin)

9. TRD – Quality Assurance
Reference distributions for QA (Sylwester) 29/08/08
Define and introduce reference histograms for the QA procedures
Implementation started (AliTRDqaBuildReference)
Exemplary versions of histograms
Definition of full set of reference histograms ongoing
Should have some quick progress now

10. TRD – Reconstruction Planning of AliRecoParam (Alexandru) 31/07/08
AliTRDrecoParam according to official scheme
Implementation existing, incl. OCDB interface
Final changes currently being discussed with Cvetan und being introduced by Alex.

11. TRD – Simulation
Consistent treatment of ZS in digitizer (Ken, Christoph) 30/09/08
Currently ZS is applied during conversion digits  raw data
Had to apply additional threshold for digits file size  slight inconsistency with ZS scheme
1st step: Modification of digits container (diff. treatment of “real” zeros and “masked” zeroes. Currently being tested.
New manpower (Hermes)

12. Geometry Additional mother volumes for services (Christoph) 31/05/08
Add additional mother volumes in the space frame to accomodate the services that do not fit into the existing TRD mother volume.
Adds additional ~9kg (Aliroot: 1586(+9)kg Reality: ~1650kg)
Possible further iteration
Once more detailed information from integration groups are available
Screws, cables, etc.
Overlaps in TRD geometry removed
Thanks to Andreas!
Backframe:
TRD Services

13. Reconstruction
Mis-match between pad numbering scheme in raw data and reconstruction
Troubles in matching cosmics tracks from TPC
Ordering needs to be swapped in AliTRDpadPlane
Not visible in simulated data
Currently under test, has to be checked for side effects, etc.
Should be fixed these days

14. Tracklets from L1 Trigger
Simulation of TRD L1 trigger
TRAP chip tracklet finder (Clemens)
Fast tracking in Global Tracking Unit (Jochen)
Evaluation of trigger efficiencies
Writing of tracklet data (MinJung, Jochen, Alexandru)
Definition of common base class AliTRDtrackletBase
To be used for tracklets from raw data, simulation and reconstruction
1st versions existing
TRD.tracklets.root (not in default reconstruction)

15. Other Topics Memory leaks Simulation of Ar/CO2 Fixed in simulation
Reconstruction under investigation (some already removed)
Simulation of Ar/CO2
AliTRDSimParam::SetArgon()
Time response implemented
Tail cancelation parameter in AliTRDfeeParam
Material in geometry  adapted parameters in StepManagerFixed() (ionization potential, etc.)

16. Conclusions Currently 6 open tasks Hope to close raw data chapter soon
2 can be closed soon
2 with new manpower
Hope to close raw data chapter soon
Final touches on DAs and FXS
Immedeate reconstruction of cosmics data
Very important information
Still some bugs turn up  pad mapping

17. Konstantin Antipin Henner Buesching and Kurt M. Barry
HLT-TRD -Status-
Konstantin Antipin Henner Buesching and Kurt M. Barry

18. Publish Selected Events
HLT::TRD
Main components are in place
Offline code is used
Mainly monitoring so far
Tested on cosmic data
Raw Data In
Track Finder
Clusterizer
Publish Selected Events
GUI
HLT
Physics Trigger
General scheme:

19. HLT::TRD current chain
HLT::TRD Status
Currently running:
RORC
Clusterizer
Tracker
FileWriter
Monitoring
Calibration
HLT::TRD current chain
1 ­ is used
2 ­ monitoring scheme is changing
3 ­ not implemented

20. HLT::TRD ToDo Speeding up the code: New monitoring scheme
A lot of room for improvement
New monitoring scheme
TRD Worker <=> GUI concept used for TRD monitoring
Need in HLT for standard monitoring tool for all detectors
Generalize TRD concept to be adoptable by other detectors
Merge TRD+TPC track
Need in algorithm to quickly match and prolongate tracks

22. FDR – 2nd Phase – TRD List of DCS for Shuttle FXS file list
See TRD task “Check DCS data points” (30/09/08)
FXS file list
???

23. FEE Simulation + Trigger
New simulation of online tracklets (Clemens Haltebourg)
Implementation of real hardware algorithm (TRAP-chip) (AliTRDmcmSim, AliTRDtrapAlu)
To be added to raw data stream (as in real raw data)
Needed for L1 trigger efficiency studies
Next: online PID
Simulation of online global tracking unit (GTU) (Jochen Klein)
Algorithm as implemented in FPGAs
Code available, needs to be interfaced to tracklet simulation