TRD Status

1. 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. Backframe: TRD Services 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!

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 • 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 • 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. HLT-TRD-Status- Konstantin AntipinHenner Buesching and Kurt M. Barry

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

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

20. HLT::TRD ToDo • Speeding up the code: • 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 • 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