Calorimeter Commissioning in 2006

1. 2005 2006 2007 2008 Calorimeter Commissioning in 2006 1: Testbeam 2: Installation, Cosmic Ray Commissioning 3: Single beam 4: First LHC collisions 5: First Physics Calorimeter Commissioning R. Teuscher

2. Calorimeter Commissioning R. Teuscher

3. TileCal Phase 1 Work packages: Now – Feb ‘06 • DCS (WP 11) • Monitoring LV, HV, temperature • Automated warnings • Trigger (WP 6) • 4 coincidence boards installed in USA15-Level 2 • 9U VME crate in reserved rack • 4 final transition boards • LVL1-Calo patch panels • 48 short cables from patch panels to coincidence boards • Trigger menu: • Back-to-back: 48 SD • (12*2 top + 12*2 bottom) • Single tower: 24 SD • 12*2 on bottom • Trigger / noise thresholds OK • Monitoring for data quality • GNAM / online • Athena / HLT • Event display • Offline analysis with Athena as now • Services (WP 2) • Trigger cables, fibres, etc. installed on detector • Full cooling, etc. • Front-end electronics (WP 4) • 128 superdrawers • 128 LVPS produced, installed & QC’d • Repairs to dead channels etc. • Back-end electronics (WP 7) • ROD system readout for 2 partitions • Connections verified, no fibres swapped • Module #  ROD fragment ID • DSP in passthrough or simple calc. • Racks completed (WP3) • HV supplies • 200V LV supplies + AUX board + LV - CAN • ADC + HV CANbus • TTC • Calibration (WP 13) • CIS, Cs, laser timing Calorimeter Commissioning R. Teuscher

4. TileCal commissioning schedule (ATLAS schedule 26Octlink), start is delayed ~ 1 week Calorimeter Commissioning R. Teuscher

5. Combined Calorimeter Milestones for 2006 As in 2004, Expert weeks followed by stable running. Dates not written in stone, but provide milestones to judge our progress. Calorimeter Commissioning R. Teuscher

6. ATLAS Installation Schedule Peter Jenni, ATLAS Overview Week, Paris, October 2005 Barrel cosmics Endcaps April ’07: Global ATLAS cosmic run Calorimeter Commissioning R. Teuscher

7. Reminder: Cosmic Trigger (WP 6.1) • 4 Chicago coincidence trigger board constructed • (LAr also interested in building additional boards if needed for endcaps) • With 4 boards in hand: 4 * 12 = 48 superdrawers (8 towers / SD) • Connection now via transition board to temporary TileCal trigger cables in USA15, Level -1 racks • Permanent rack location reserved in USA15 Level -2 racks next to LVL1-Calo Patch panels • Need to construct intermediate cables from Patch panels (time + manpower) • Also split LB + EB signals to 2 coincidence boards • Second set of 4 transition boards being constructed for outputs from LVL1-Calo Patch panels / Receivers Nature 14 July 2005 Calorimeter Commissioning R. Teuscher

8. Two Trigger Modes 1. Back to back towers (barrel) 2. Single tower (exbarrel or barrel) Calorimeter Commissioning R. Teuscher

9. Configuration for 4 Trigger boards24 SuperDrawer (SD) top x 24 SD bottom, Single-tower trigger 1 A: 12 SD 2 B: 12 SD A B Four Coinc. Boards C D 3 D: 12 SD 4 Calorimeter Commissioning R. Teuscher C: 12 SD

10. LTP LTP LTP LTP TTC partitions of Sub-system 1 LTP LTP LTP LTP TTC partitions of Sub-system 2 LTP (Local Trigger Processor) • For final ATLAS CTP (Central Trigger Processor) chain to subdetectors • For cosmics: Chain TileCal trigger to LAr • Needs master / slave unit being designed for 2 partitions, ready early ‘06 P.Farthouat / T.Pauly Calorimeter Commissioning R. Teuscher

11. DAQ Milestones in 2006 Calorimeter Commissioning R. Teuscher * 50 ROS PC’s planned by TDAQ for January ’06  OK

12. Discussion • Informal TileCal + LAr Meeting held at CERN ~month ago • TileCal: Phase 2 + 3 coordinators + subsystem experts + … • LAr: Phase 3 Barrel + Endcap coordinators + subsystem experts + PL + ... • Learned that external scintillators at IP are not an attractive option for LAr • At most 2-3 weeks available in Fall ’06 • Outcome: LAr will produce a document to be reviewed by TileCal + Institute Board • See attached document + questions at end of this talk Calorimeter Commissioning R. Teuscher

13. LAr Goals for Cosmic Runs (1/2)(M. Aleksa) • First of all the clear goal of the barrel phase 3 commissioning is to demonstrate that the detector can operate in a stable mode during months. • Full detector calibration • Demonstrate software calibration + db is working ! • Will start in February 2006 (as soon as the barrel cryostat is cold) • Needs to be fully operational before cosmic muons run starts • Pedestal, Ramps, Calibration pulses + OFCs • COOL/POOL db integration • Monitoring + Bad cells at calibration level • Bad physics signal shape • Define “bad” signals in Physics with seeking algorithms + monitoring • Cross check calibration level results with results from the installation, and cold commissioning in B180 Calorimeter Commissioning R. Teuscher

14. Barrel middle compartment Test-beam data S()/N 7 central cell Muon signal in barrel EM calorimeter Due to Accordion geometry, muons are reconstructed in middle compartment by summing two cells in . With 10000 events, muon signal can be measured with ~ 0.3% precision Note : S/N ratio too small in strip and back compartments Calorimeter Commissioning R. Teuscher

15. LAr Endcap Dates (1/2)(E. Monnier) • Side C: • Tile EBC assembly, 11/05 • Lowering of ECC, 21/11/05 • Completion of EBC mech. assembly, mid 01/06 • ECC moved in, connection of services, full access to Barrel and EBC, mid 02/06 • ECC Warm test 03–04/06 (Coherent noise, Daq) • ECC Cold test 05-06/06 (Noise, Calib, Sig. rec…) • ECC + Barrel 07/06 Calorimeter Commissioning R. Teuscher

16. LAr Endcap Dates (2/2)(E. Monnier) • Side A: • Tile EBA assembly, 01/06 • Lowering of ECA, 02/06 • Completion of EBA assembly, 03/06 • ECA/C moved in, Solenoid field mapping, 04/06 • Re-opening and full access for connection of services, 05/06 • ECA Warm test 05-06/06 • ECA Cold test 08-09/06 • ECA + Barrel + ECC 10/06 Calorimeter Commissioning R. Teuscher

17. ATLAS Commissioning View: Main steps up to spring cosmics(G. Mornacchi + P. Perrodo – ATLAS Overview Week, Paris, October ‘05) • Intermediate steps • Individual barrel calorimeter partitions • Integration with DAQ (ROS system) • Event building and data recording • Individual DCS systems operational • Monitoring and analysis • E.g. local (at P1) analysis of data from a run • Infrastructure for local analysis • Detector software for analysis • Data bases: access • Surface proto-control room • Combined calorimeters • Common trigger distribution (LTPs, CTP) • Common central DCS (e.g. alarms) • Surface proto-control room • Combined barrel calorimeters, cosmic run (May 06) • Cosmic trigger • Analysis software Calorimeter Commissioning R. Teuscher

18. ATLAS Commissioning Meetings(G. Mornacchi / P. Perrodo) • Address Phase 2 issues • Monday afternoons • Goals • Single place where phase 2 issues are discussed • Put different actors together, identify problems • Define Phase 2 Work Packages Calorimeter Commissioning R. Teuscher

19. Integral to ATLAS Management Operation Model Periodic Cosmic Runs in Spring 2006 Training of (proto-) Run Coordinators (F. Gianotti) Calorimeter Commissioning R. Teuscher

20. BACKUP Calorimeter Commissioning R. Teuscher

21. LAr Goals for Cosmic Runs (2/2)(M. Aleksa) • Amplitude inter-calibration in  • Summing modules in  • Time inter-calibration • Energy/time rec. with OFC needs pulse vs 40 MHz clock phase • Cross-check relative timing of middle layer cell predicted at ~0.8 ns (calibration pulses + cables lengths, systematics, t.o.f.) • The pulse versus 40MHz clock phase will be delivered by the TileCal time reconstruction. We need an accuracy around 1.5ns. • This time phase (corrected for the time of flight of a muon from the IP) needs to be independent on eta and phi (i.e. independent of the Tile trigger tower) • Intercalibration of the timing of different TileCal trigger towers is very important. • Will be checked with the data of the TileCal September expert week. • LAr EM Positioning • ~ 0.025/8/12 in  using strips • ~ 0.025/10 in  with middle cells • Study ‘high’ energy events (above ~2 GeV) • Extract drift time from 32 sample events Calorimeter Commissioning R. Teuscher

22. LAr Data taking(M. Aleksa) • Amplitude inter-calibration in  • Per cell: /N/290 MeV • Uniformity: /<E> ~ 0.5% with 40000 /cell • Group cells in  (48)  1000 /cell • Time inter-calibration • 100 /cell, can check physics timing at 0.6 ns • LAr EM Positioning  to be investigated • Events above ~2 GeV  to be investigated • Drift time from 32 sample events  to be investigated G3 results: projective 0.042±0.005 Hz, pseudo-projective 0.153±0.010 Hz 100 µ/cell  106 full days(29) with 1.0 GeV Tile threshold, =±0.1, =120.1 projective 0.027±0.004 Hz, pseudo-projective 0.098±0.008 Hz  165 full days(45) with 1.5 GeV Tile threshold(3840 top cells) • At least 100 days of data-taking necessary to obtain useful results • Our preferred trigger would be single-tower trigger (on bottom modules) • Then we could in principle take data with only 2 trigger board (sharing with EC possible)! Calorimeter Commissioning R. Teuscher

23. Questions from LAr to TileCal • Is it possible to trigger and read independently the Tile barrel and extended barrel(s)? • Answer: Trigger: Yes, it is possible. A cable / splitter would be needed to split the LB/EB signals from the LVL1-Calo patch panels to two separate Chicago transition modules. Readout: Yes. The ROD readout is grouped by TTC partitions, and LB/EB are separate partitions. Event building would be necessary. • It might be useful to trigger on the barrel in order to have projective muons in the LAr endcap. • Answer: Could be difficult, required LB+EB to be in final position. During many periods in ’06 the EB’s are scheduled to be moved back and forth in z for muon big wheel installation etc. Some “quiet periods” should be checked. Calorimeter Commissioning R. Teuscher

24. Questions from LAr to TileCal (cont.) • LAr plans to have 4 experts on call (Front End + cooling, Backend + Online, DCS + interlock, Monitoring + offline), can a similar effort be provided by the TileCal group over a long period while some work will have to be done on the extended barrels? • Answer: Comments invited from all TileCal members + Institute Board • Should dedicated expert meetings / discussion start before the end of the year? • Depends on positive answer from TileCal. Last dedicated meeting was very productive. Useful to coordinate with ATLAS weekly commissioning meetings. • Question to LAr: Help with manufacture of 48 intermediate trigger cables + connectors in USA15 from LVL1-Calo Patch Panels to coincidence boards? Calorimeter Commissioning R. Teuscher

25. Summary - Todo • Complete TileCal Phase 1 commissioning • Discuss Questions from LAr • Prepare reply • If positive, prepare plan with TileCal Work Package Managers for status + needs for Spring 2006 cosmic ray run • Could be in form of short document • Include requirements for central services • TDAQ, HLT, Central DCS, etc. Calorimeter Commissioning R. Teuscher

26. ATLAS Experts • Build upon existing structures • Subdetector experts • Commissioning Phase 2/3 coordinators • Front-end • ROD / DAQ / online tools • HV • DCS / interlock • HLT Monitoring • Meeting last week with TileCal & HLT monitoring group • Offline software & database • Central ATLAS systems • TDAQ • LTP (Local trigger processor) • Central DCS to collect warnings from subsystems • Basic Control room on surface • Network & Computing • Run coordinators • Meetings • Commissioning coordinators Calorimeter Commissioning R. Teuscher