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Status of the Muon detector

Status of the Muon detector. Alessandro Cardini CERN & INFN Cagliari Thanks do Davide, Rafael, Maurizio, Oleg, for part of the material included here. Overview. I will present a report on the current status of muon detector (M1 and M2-M5) and on the last months’ activities

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Status of the Muon detector

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  1. Status of the Muon detector Alessandro Cardini CERN & INFN Cagliari Thanks do Davide, Rafael, Maurizio, Oleg, for part of the material included here

  2. Overview • I will present a report on the current status of muon detector (M1 and M2-M5) and on the last months’ activities • Burkhard will report on M1 alignement and installation plans A. Cardini / CERN & INFN Cagliari

  3. C-side A-side M1 Services • Most of the cables were already installed before 2008 run • Signal and control cables connectorized, tested, connected • Gas pipes installation + Cable/Gas pipes arrangement at cable chain extremes (protections) A. Cardini / CERN & INFN Cagliari

  4. M1 Gas System (MWPC + GEM) A-side C-side • MWPC gas system • already commissioned • Already part of the M2-M5 recirculation loop (up to internal bypasses) • GEM gas system • Added 5m pore metal filters at the input of both distribution racks • Gas flowmeters and mixer ready and installed • All sensors/valves tested • Last Friday: final tunings to guarantee that chambers will always be in overpressure • We will test gas circulation this week with external bypasses C-side A. Cardini / CERN & INFN Cagliari

  5. M1 PVSS Projects • ODE • All M1 projects installed and tested (Maurizio) • FEE • ELMB firmware updated • Projects installed • Threshold scan modified for GEM FEB • Hierarchy • Chambers’ testing tools – for M1 we will the final system (PVSS) to test chambers during installation • Work in progress by Rafael and Davide • Will try to converge this week together with Davide in order to have a “Test A”-like procedure in PVSS A. Cardini / CERN & INFN Cagliari

  6. M1 FEE PVSS Preliminary Tests • One GEM chamber is present on M1R1 side A (CMB 18A1); • Driver for USB-CAN controller (Systec) installed and CANopen OPC server version 2.9.4 re-installed; • ELMB Firmware updated; • FEE Projects installed on M1 with “LHCb-standard” port configuration; • Whole communication Project-Cardiac tested; • Some functionality already tested and debugged when needed; A. Cardini / CERN & INFN Cagliari

  7. M1: Detector’s Test during installation During chamber installation two tests are foreseen on all Front-End Boards: • Measurement of the noise level with CARDIAC(GEM) internal counters while scanning the discriminator thresholds (threshold scan): • Automatic evaluation of the noise level of each channel; • Individuate dead or disconnected channels; • Result fit identifies bad CARIOCA(GEM) channels; • Connectivity test by means of the ODE: • Check the connections between SB and Chambers (I2C) and connections between Chambers and DAQ (LVDS) A. Cardini / CERN & INFN Cagliari

  8. Threshold scan management Chamber to be tested Chamber connections Noise results: it is possible to plot he noise level of each channel for a chosen threshold Text Test results M1 Threshold scan status • After some bug fixing, a dedicated panel was developed to allow to perform a threshold scan on a single chamber and to analyze the results • A whole crate (a station side) could be tested in less ~30 minutes. However you need 3 minutes to download results from each ELMB A. Cardini / CERN & INFN Cagliari

  9. M1: Connectivity Test • Functions and panels are already there (Connectivity, Timing etc.) and they were tested in local; • ODE project – ODEMON v.1.6 – installed and fully prepared for M1 • ODE’s are already linked in the hierarchy; • Some tests between ODE and L0 trigger were already done (this means that at least a part of the tools working for M2-M5 were also used for M1); • What is still missing: • Connection maps between chambers and ODE for the GEM; • Connection maps between chambers and SB; • M1 Chamber’s linking to the Hierarchy; • Connection maps SB-Chambers are missing and without them chambers Device Units cannot be created and therefore they cannot be linked A. Cardini / CERN & INFN Cagliari

  10. M1 Electronics Commissioning • Tell1 firmware installed (Giacomo) • ODE link commissioning to Tell1 done (Giacomo) • ODE links commissioning to L0MU done (Caterina, Renaud, Ale) • All up and running smoothly (oh yeah!) M1A Racks A. Cardini / CERN & INFN Cagliari

  11. HVGEM muhvc02w 20m CANbus cable SYSTEC D3 D2 HVGEM • Hardware installation completed • OPC CANopen server installed and configured on MUHVC02W PC • Simple commands and defaults are correctly executed from a test PVSS panel • Software in development (Matteo Mara (CA) + Fabrizio Murtas (LNF)) in close contact with Michela to guarantee a proper integration in the already existing HV projects A. Cardini / CERN & INFN Cagliari

  12. M1 Closing Test 21-11-08 OK – all very smooth ! PS/SPD open M1 closed A. Cardini / CERN & INFN Cagliari

  13. M2-M5 Water Leak Detection • A different method w.r.t. what is used elsewhere in LHCb • Nikolai found a water-sensistive tape that could be readout with the existing system • This tape is following all water pipes in all M2-M5 racks • Very sensitive: ~10 water drops on the tape give an alarm • We really need this sensitivity: we have HV modules all over the place! • System up and running! (and already giving alarms on occasional very small water leaks) Note: for the moment M1 racks have the “standard” LHCb water leak detection system – common to all other racks in the bunker – sensitive only to large water leaks A. Cardini / CERN & INFN Cagliari

  14. M2-M5 Air Cooling system • Two big turbines installed, one for each side • Variators purchased and installed but not yet connected • Connection to cooling water to be done A. Cardini / CERN & INFN Cagliari

  15. M2-M5 HV Studies on PNPI System • PNPI system consist of 8 Master Board modules and 56 RDB modules (+ 2 main power supplies) • Master Board ok after summer repairs • Problems on RDBs have been found and debugged, and some modules have been replaced in the last months A. Cardini / CERN & INFN Cagliari

  16. M2-M5 HV Studies on PNPI System Test 12.11.08 HV on Main P.S. =2.5 kV, Vset=2.7kV A. Cardini / CERN & INFN Cagliari

  17. Oleg’s Conclusions (17/11/08) • After about half of year of system in operation we have 2.5% floated voltage sensors in RDBs and approximately the same percent of noisy channels. (60% of floated channels are really bad) • There are HV-resistors of both types inside of floated channels . So, we shouldn’t replace the resistors of US type in our system, what is planning by CMS with analogical HV-system. • I assume that it is “infant mortality” of elements. And it is normal percentage! • To improve the situation we should monitor the system and change or recalibrate the problematic channels. • Before beam we need the instruments for recalibration in situ and Evgeny is working for it. • To make the system perfect we should plan several iterations of work what was done by me last month. A. Cardini / CERN & INFN Cagliari

  18. Oleg’s conclusions on MWPCs • In total (99,8 % - OK): • 3 Gaps are disconnected because of short circuits • 2 Gaps have a dark current depending from humidity • 1 Gap has a dark current, under training • 4 Gaps have a sparks of unknown nature • Do we need flushing of chambers by nominal gas mixture? • Arguments: aging, cleaning • Proposal: performing of the 2-3 weeks cycle with CF4 once in next year A. Cardini / CERN & INFN Cagliari

  19. M2-M5 Timing Tests • About 5% of muon channels were masked during “2008 run” • A systematic recheck on all masked channels is now ongoing (Caterina, Giovanni P., Francesco D., Adalberto, Matteo P.), will take at least until Christmas • All timing test results need to be interpreted by experts, then repairs can start • Some ODEs have already been recovered, but part of these channels will need an hardware intervention (Nikolai)– it will be a long job... • Francesco D. will be at CERN up to Christmas, and others will help, but for next year we definitely need a person (or more) dedicated to this activity...Manpower during next year - starting from January and for ~3 months - is a critical point if we want to complete this job!!! A. Cardini / CERN & INFN Cagliari

  20. M2-M5 L0MU tests • This study was started because we found some mistmatches between MUON and L0MU data during runs taken with cosmics in September  See Julien presentation A. Cardini / CERN & INFN Cagliari

  21. A. Cardini / CERN & INFN Cagliari

  22. M2-M5 PVSS Projects’ Status • All projects are now working with the LHCb-standard port numbers; • ODE and Hierarchy projects have been registered as services with automatic start and stop in case of shutdown • Integration with the L0muon trigger to allow the automatic optical link check (connectivity and BER test) • The release 1.6, already fully prepared for M1, shows as its greatest novelty, OdeToolbox, a collection of interactive utilities to accomplish rapidly some operations "by expert" • FEE project version 1.5 (bug fixes and new recipe management tools) ready to be installed and tested A. Cardini / CERN & INFN Cagliari

  23. M2-M5 PVSS Projects’ Status • a new CVS repository has been created: lbdemons it will contain the sources of all the ECS projects involving the Muon chambers, the ODE and the DAQ hierarchy lbdemons is now partially populated and it can be visited at: http://isscvs.cern.ch/cgi-bin/cvsweb.cgi/?cvsroot=lbdemons • What is still to be done: • the system for the automatic and continuous monitoring of the settings • the procedures to store the recipes into the Configuring DB A. Cardini / CERN & INFN Cagliari

  24. See Burkhard’s presentation M1-M5 December Plans • M1 • Install a few remaining HV+LV GEM cables • Start installing GEM detectors (8/12) • Alignement of the walls • Support installation • M2-M5 • Gas System Maintenance: no gas on chambers ( no HV) for 2 weeks (1/12 and 8/12) • 1-day Opening/closing stations to adjust end-switches • Continue work on non-time-aligned channels A. Cardini / CERN & INFN Cagliari

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