1. TRT Commissioning Vassilios I. Vassilakopoulos Hampton University Hampton University (for the ATLAS TRT Collaboration)

2. The ATLAS TRT collaboration North-American collaborating institutes are listed in bold: CERN, CH-1211 Geneva 23, Switzerland Lunds Universitet, Lund 22100, Sweden Bogazici University, Istanbul, Turkey Hampton University, Hampton, VA 23668 USA Henryk Niewodniczanski Institute of Nuclear Physics, Cracow 31-342, Poland Duke University, Durham, NC 27708 USA University of Copenhagen, Copenhagen 2100, Denmark Moscow Engineering and Physics Institute, Moscow 115409, Russia Joint Institute of Nuclear Research, Dubna 141980, Russia Indiana University, Bloomington, IN 47405-7000 USA Yale University, New Haven, CT 06520-8120 USA University of Pennsylvania, Philadelphia, PA 19104-6396 USA Petersburg Nuclear Physics Institute, Gatchina, St. Petersburg 118300, Russia Institute of Nuclear Physics, Moscow State University, Moscow 119899, Russia P. N. Lebedev Institute of Physics, Moscow 111924, Russia Faculty of Physics and Nuclear Techniques of the Academy of Mining and Metallurgy, Cracow 30-059, Poland

3. Outline  TRT Detector Integration Status  SR1 Tests and Preparations  SR1 Combined Tests and Cosmic Runs  Final Commissioning in the ATLAS Cavern  Summary & Plans

4. ATLAS Commissioning Phase 1 commissioning –Infrastructure, individual sub-systems Phase 2 –Combined sub-systems –Evolve into an integrated experiment –Perform early combined runs (e.g. cosmic runs). Phase 3, 4 –Global Cosmic runs, –One beam runs –First collisions Time scales –Phase 1 : 2004 - Early 2007 –Phase 2 : Fall 2005 - Early 2007 –Phase 3 : March 2007 Phases 1, 2, 3 and installation will overlap

5. ID Installation Schedule At present: the focus is on the assembly of the detector parts, their services and their integration. Before the detector reaches the pit: combined system tests, integration of services, software and DAQ must be worked on. In the cavern: Stage 1 and 2 must/will be completed and fully debugged there to allow smooth connection of services and efficient commissioning. How to connect things and the sequence of tests, is based on experience from SR1. The detailed plan is under works… DatesInner Detector Parts 3 March 2006SCT + TRT Barrel 25 May 2006SCT + TRT End Cap-C 30 June 2006SCT + TRT End Cap-A 5 October 2006Pixels

6. Orientation in ATLAS Side A = + Z side ( = called “back” on TRT barrel) Side C = - Z side ( = called “front” on TRT barrel) Insertion from SR1 is from Side C (-Z side)

7. TRT Pictures TRT BarrelTRT End Cap C, stacks A & B

8. TRT Integration Status

9. TRT Barrel Status (1) Last module installed on Feb. 3 2005 All modules tested (HV stability, gain uniformity, wire tensions etc.) All protection boards installed. RF shield was put on. Protection panels modified and installed. Heater pads installed Most FE boards installed. Continue to install: Electronics and module cooling tubes. Manifolds by quadrants after electronics are installed Cooling manifold, Active gas manifold (started installation in July), Purging gas manifold (in hand)

10. TRT Barrel Status (2) Continue to install: Thermal sensors Module/Cylinder sensors (installed), cooling plate & purging gas sensors. Fuse boxes (production and evaluation in parallel). Continue to test: Sector tests (at least one to be used for combined tests) –4 sectors mechanically done, electronics tests have been started. Cooling, active gas, purging gas, HV, thermal sensors, electronics… Some DCS modifications in progress. MTF migration: Commissioning, entering data. Still on the critical path: Manifolds, electronics, fuse boxes. One Stack already Fully Operational. One Stack already Fully Operational.

11. A Taste of Installation Tests FE electronics installation tests consist of: –Connectivity test –Noise scan (low threshold) –Repeat of internal pulse response for low and high threshold The full set of installation tests are done before and after installation. Final verification of electronics functionality/connectivity. Detailed mapping of noise levels, dead channels, fine time performance. Electronics tests follow mechanics tests around the barrel. Starts after first quadrant of electronics and services are in place. Last time that most of the boards will be read out or powered before installation in the pit. SECTORTESTS

12. TRT End Cap Status TRT End Cap A-stack: Electronics boards installed and tests in progress. B-stack: Electronics boards installed. Rotation of stacks: Both stacks are rotated now and on tools in prep for services mounting (still separated) Mechanical survey (verification of dimensions) continues Rearrangement of stacking tables is done

13. TRT SR1 Schedule 2005 - SR1 – Standalone Tests & Preparations July – Oct. 2005System Tests & Preparation 3 Oct. – 20 Oct.Setup readout w/ new Back-End 20 Oct. – 15 Nov.Extensive TRT Barrel tests 15 Nov. – 15 DecExtensive TRT End cap tests Mid-DecStart TRT Barrel & SCT combined tests 2006 - SR1 - ID Combined Tests & Preparations 4 Jan. – 6 Feb.Combined TRT/SCT tests – Cosmic Runs 1 MarchTRT/SCT Barrel moves into the pit 28 Mar. – 24 Apr.Combined ID End Cap C Tests 25 MayTRT/SCT End Cap C moves into the pit 30 May –12 JuneCombined ID End Cap A Tests 30 JuneTRT/SCT End Cap A moves into the pit

14. SR1 Sub-Detector Tests Three different SR1 detector setups in 2005/06 TRT Barrel (early Oct – mid Nov) Tests with new RODs and TTCs New Bytestream converter needed. TRT End Cap (mid Nov – mid Dec) Self-triggering tests in parallel. SCT Barrel insertion into TRT Barrel TRT Barrel + SCT Barrel (Jan 06) combined test Possible SR1 combined End Cap (EC) tests April – June 2006

15. TRT/ID Pit Schedule Detector PartsInstallation DatesTests & Commissioning Dates Barrel3 March 20067 April – 23 May End Cap C25 May 20063 July – 28 July End Cap A30 June 20063 August – 30 August After 1 st of March work in SR1 is carried out After 1 st of March work in SR1 is carried out in parallel with activities in the pit. After the detector moves to the pit After the detector moves to the pit very short period for tests and commissioning! very short period for tests and commissioning!

16. Standalone tests in SR1

17. Standalone Tests Objectives Hardware Hardware in place and operational. Modules assembly, testing. Attach services (cooling, gas lines, power lines (LV,HV), cabling, sensors etc.). FE electronics, support boards and Panels. Mapping, Timing, Alignment, Operational stability. DAQ DAQ setting up and development. monitoring TRT monitoring development for standalone and combined operation. Viewer/Editor Detector Viewer/Editor development. DCS Data Control System (DCS). User interface and validation for all parts (LV, HV, Temp….). DCS-DAQ communication. DCS-DB communication. GGSS validation. Integration with ID DCS. DB Database (DB) setting up and communication. Offline software Offline software … including simulation software for all Cosmic setups! Must be ready to handle information from the complete Barrel by March the 3 rd 2006 and for the complete End-Cap by May the 20 th.

18. 2 sectors - 6 modules equipped from both sides  System tests.  Starting up new DAQ. Multi ROD crate DAQ (6 RODs, 2 TTCs in one crate)  Online monitoring (GNAM) development & testing  Detector viewer/editor development & testing Temperature images of the detector DB parameter visualization, editing tests.  Physics monitoring development.  DAQ-DCS communication tests.  Database communication tests.  Integration with SCT DAQ  Cosmic run + self trigger possibility TRT Barrel - Summer 2005

19. 4 sectors - 12 modules equipped from both sides  System tests (grounding, shielding, loops, cable attenuation etc.)  TRT final Back-End tests.  Multi ROD crate DAQ (4 RODs, 2 TTCs in two crates) with a final Back end.  Monitoring adaptation for new Back -End  Integration with SCT DAQ.  Finalize monitor development for the Barrel.  DCS:  Operation and debugging of final user interfaces  Database communication  Data/parameter visualization tool tests/tuning  HV system for 1/32 operation/debugging  Gas Gain Stabilization System  Gas Gain Stabilization System operation & debugging  Finalize detector viewer/editor  Finalize detector viewer/editor for the Barrel.  Cosmic run (timing, mapping, monitoring, self triggering, etc.)  ID monitoring tests TRT Barrel - Fall 2005 Similar tests but with 4 sectors. Must finalize the tools/interfaces for the barrel.

20. TRT active sectors 4 Active sectors Stack 7 + Stack 8 Stack 23 + Stack 24 A stack (sector) is: 1 T1 + 1 T2 + 1 T3 module Sectors to be cabled from both sides A and C 12288 channels are operational View from outside towards Side A

21.  Tests with new Back-End  EC- monitoring development (new geometry).  DCS:  Operation and debugging final user interfaces (1/32-2/32 of the EC)  DB communication  Data/parameter visualization tool tests/tuning  HV system for 1/32 operation/debugging  GGSS operation debugging  Detector viewer/editor development for EC  Temperature image of the EC  DB parameter visualization/editor tests  System tests (grounding/shielding/loops/cable attenuation etc)  Cosmic run (timing, mapping, monitoring, etc.) TRT End Cap – Late Fall 2005 Similar tests with Barrel. Slightly different issues to be addressed. The no. of channels increases dramatically.

22. Combined tests in SR1

23. Towards ID Combined tests Insertion Setup SCT-TRT Insertion & Final Seal Transfer To Test area & Cabling EC Trolley SCT readout checks TRT readout checks Combined Tests -Noise -X-talk - Operation & Stability - Cosmic Run(s) -Interference of Services, DAQ. Prepare Transport & Transfer to pit TRT Barrel SCT Barrel Nov. 15 th Dec. 15 th Jan. 5 th Mar 1 st

24. Barrel and End-Cap  Combined system tests (TRT and SCT). Validation of the grounding & shielding design Noise levels & Power distribution External pick-up sensitivities Explore potential emerging issues.  ID monitoring development  Alignment checks  Final channel mapping with cosmic rays  Combined DCS operation tests  ID level commissioning and operation tool development.  Operation with final Database (DB) tools Combined Test Objectives

25. Cosmic Run(s) Objectives  The Ultimate combined test  The Ultimate combined test since could explore:  DAQ/Online software integration  Online Monitoring integration  Offline Software integration  Physics performance  Final tuning of read out parameters.  Ability to reconstruct tracks, do alignments.  Start preparation & testing of the building of ATLAS events.  Use external trigger(s) & information. (Self triggering could be used also for standalone tests.)

26. First Combined Test configuration SCT 14x48 modules 672 modules Cabled & Powered TRT 2 sectors on Side A + 2 sectors on Side C cabled Tests: Full SCT-TRT interface along modules SCT-TRT interface along cable overlap Interface to Thermal Enclosure & heaters TRT between layers Cosmics technically OK but at end of the schedule … BARREL

27. November 2005-February 2006: Cosmic runs with the Barrel SCT and TRT. Barrel Setup ` Plans for Cosmic Run at SR1 Scintillators Iron or lead absorber to reject low momentum tracks Active TRT Sectors. TRT Barrel: 2 (top) + 2 (bottom) TRT phi sectors. SCT Barrel: 672 SCT modules. Tilted by ~20 o with respect to the vertical axis.

28. Scintillators Setup Present Anticipated Setup 2 Scintillator Arrays 150x60 cm 2 Tilted by 20 o tilted Positioned at the top and bottom with no 3 rd array in the center.Cut-off >0.5 GeV >2 GeV Flux(Hz)304.0212.8 Efficiency4.6%3.9% Rate(Hz)13.88.5 Simulated trigger rates

29. TRT: For 2 x 1/32 sectors read out. All SCT services installed but TRT End cap is supposed to have all harnesses installed by that time as well. No problem to test any area. A B Tests: February – March 2006 Might be delayed. Everything depends on SCT EC schedule. Commissioning with the SCT EC

30. What should we provide? Full track reconstruction of cosmic events. Alignment corrections for the different running conditions (e.g. different cooling temperatures). Monitoring (at the EF, if available).

31. What do we need to do? (1) Simulation Basic simulation package exists: InDetCosmicSimExample TRT barrel and SCT barrel for Jan 2006 setup –Detector description of the SR1 layout –Simulation in Geant4 with only TRT+SCT barrel + scintillator setups –Tuning of simulation based on CTB data –Hits simulated in full detector and kept only if track passed scintillators –Digitization only of hits in read-out sectors & modules --> RDOs BS converters –SCT fine with old BS converter, –TRT will use new RODs, different format, needs new RDO BS converter (new InDetRawDataByteStreamCnv under development)

32. What do we need to do? (2) Reconstruction package: InDetCosmicRecExample –Create from SCT & TRT RDOs: –PrepRawData, Space Points –SCT clusters and TRT drift circles –Tracks (using straight line fitter of new Kalman fitter) Reconstruction output: CBNT ntuple, alignment ntuple, ESD, Atlantis xml files. Calibration –Need for implementation of TRT calibration algorithms in Athena –Many iterations required. Results should be stored in the Conditions DB Monitoring Alignment Conditions DB (Oracle or MySQL) –Cabling, masking of read-out modules. –ROD configuration (thresholds, voltages) –Bad/noisy channels –Calibrations (R-t relations)

33. Tasks for the 2006 commissioning Similar with the tasks (to be) done in 2005 in the SR1. Only the scale and importance will be augmented. Final read-out parameter tuning Noise tests (standalone & combined) Services (Gas partial, cooling, HV, LV, Safety Systems) DCS tuning (standalone, combined) DB issues Monitoring tuning (standalone, ID) Comics runs –Mapping –Timing –Alignment Different calibrations. Integration with ATLAS DAQ

34. Requirements for 2006 Commissioning  Completion of final connectivity tests.  Completion of functionality tests.  DCS fully operational, including interlocks.  Complete module readout available (Barrel, End Cap-C and End Cap-A).  Availability of a complete tested HV system.  Availability of Gas system and gas (Ar/CO2).

35. RCD Partition 1 TRT EC A Partition 4 TRT EC A Partition 2 TRT Barrel A Partition 3 TRT Barrel C Event Building RCD during commissioning in the pit. Parallel running with different partitions is required. Correlation between both parts of the barrel is important and we need to build complete event. ROD Crate DAQ

36. Cosmic Run Tests in the ATLAS Cavern

37. Operation with cosmic rays ~ 5 million cosmic muons enter the cavern in 15 minutes Cosmics in 10 milliseconds

38. Trigger rate for the Barrel Simple PDG calculationFull GEANT simulation ‘ALEPH flux’ 0.025 Hz = 90 / hour0.037 Hz = 130 / hour Require muons to deposit E > 1.5 GeV in each of 2 back-to- back TileCal towers 0.1 x 0.1 in (η,  ): Access shafts increase this rate by ~ 20%. It will be quite difficult to look for particles and make calibration at this conditions but still possible.

39. Initial TileCal Cosmic Ray Muon Trigger Special setup to obtain trigger from Tile Cal is prepared. Projective geometry for the trigger is used in the barrel area z R It is a problem for the EC TRT. Use RPC trigger instead! CTP is required for this.

40. Even with the extended Barrel trigger from TileCal the trigger for the TRT ECs is under question Extended Barrel Trigger

41. An overview of the different installation/testing scenarios and schedules at September meeting. Only then plans for commissioning and negotiations with other subsystems can be done. Self trigger possibility Self trigger possibility is probably the only way to make cosmic run with the end-cap before CTP available. It also very much useful for the barrel because it could increase the trigger rate by factor of about 100. Plans for the commissioning require clarification, realistic installation and coordination. Keep working… Conclusions

42. Things could dramatically change based on what number and when is available: Cabling - Patch Panels – LV – HV - Back-end – DAQ TRT commissioning scenarios should be (re)-evaluated. Gas (Xe mixture) for tests will be available by Feb. 2006 Gas system commissioning will start in Spring 2006 and can be largely done in parallel with Ar/CO2 flushing till November 2006. Many developments in TRT DAQ software and monitoring could affect the barrel schedule (due to the earlier installation). TRT Barrel has little service time for tests in the cavern. Cavern Tests include: Gas leak, Cooling (leak, function), Electronics, HV, DCS tests. Gas leak tests require constant temperature! Electronics test take a while because readout parameter tuning. Summary

43. END