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LAr DCS

LAr DCS. HW On-Call Training. LAr DCS system overview. 14 PVSS (main DCS tool for ATLAS) projects are running on the 14 PC Lar DCS control and monitoring systems : ROD system – Wiener VME crates; FEC system Low Voltage and Temperatures HV system ( 8 projects)

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LAr DCS

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  1. LAr DCS HW On-Call Training

  2. LAr DCS system overview • 14 PVSS (main DCS tool for ATLAS) projects are running on the 14 PC • Lar DCS control and monitoring systems : • ROD system – Wiener VME crates; • FEC system Low Voltage and Temperatures • HV system ( 8 projects) • Lar DCS monitoring systems : • LAr temperature readout • LAr purity • LAr Sub-detector Control Station (SCS) – integration of the LAr DCS subsystems using FSM tool + LAr FE Cooling monitoring S.Chekulaev

  3. ATLAS GCS 8 CANBUS 4 CABUS 3 CANBUS 4 CANBUS ELMB x 58 8 CANBus 3 CAN Bus A D FEC LV &TEMP LV PS STATUS Local Control Stations Station Names : PCATLLAR… PCATLLARSCS HV7 HV3 HV0 HV1 TERMO PUR ROD HECLVTEMP FEC USA 15 270 V PS 280 V PS ISEG HV MODULES (151 modules in 5 racks) PURITY CRATE CAN PSU x16 17 Wiener CRATES ELMB x27 12 PURITY BOARDS HEC LV BOX x8 ELMB ECA : 36 ECC : 37 UX 15 48 MB S.Chekulaev

  4. LAr DCS system integration • The LAR DCS ( as well as ATLAS) is represented by means of a finite state machine (FSM) hierarchy which is operated by a DCS operator through an FSM and alarm screen. • In ATLAS the DCS is organized in three functional horizontal layers and the FSM is the main tool for the implementation of the full control hierarchy • The LAR sub-detector controls station is top of the LAR FSM tree. S.Chekulaev

  5. ATLAS FSM Architecture S.Chekulaev

  6. LAr FSM hierarchy S.Chekulaev

  7. LAr main FSM panel S.Chekulaev

  8. Ui Panel Layout HV φ – wedges EMB HV φ – wedges EMB PS Cooling loops ROD crates FE crates S.Chekulaev

  9. LAR partition Ui panel • Φ – granularity ; • All graphic objects are “connected” to the FSM objects (color of the cycles or wedges color is changing if STATUS or STATE of the FSM object is changing) ; • Text is displayed if the cursor points to a graphic object • There is a possibility to reach corresponding FSM object from the Ui panel S.Chekulaev

  10. ATLAS FSM • The “STATE” and “STATUS” are defund for each FSM node. They are two aspects that work in parallel and provide all the necessary information about the behavior of any system at any level in the hierarchy. • The STATE defines the “operational mode of the system” • The STATUS gives more details about “how well the system is working” (i.e. it warns about the presence of errors). The STATUS is somehow similar to the alert screen. Having the display of the STATUS within the FSM is useful to find out faster the information located in the PVSS panel of the element with an error https://edms.cern.ch/file/685114//FSM_INTEGRATION_GUIDELINE.pdf S.Chekulaev

  11. LAr Alarm screen S.Chekulaev

  12. Alarm handling • Alarms from the PVSS alert configurations at the data point level will be displayed using the framework (FW) Alarm Screen, and are intended to be used for detailed problem tracking and acknowledgement. • A simplified alarm handling mechanism is introduced at the level of the FSM (“STATUS”). The STATUS allows for context based signalization of problems and error tracking inside the control hierarchy directly on the FSM operator interface. S.Chekulaev

  13. Access to the LAR DCS system • System monitoring could be done using of the LAR FSM Ui panels, from ATN – directly , from GPN – WTS (cerntsatldcs) • Limited number of the DCS actions could be done from the FSM panels Any action should be approved by LAr Run Coordinator!!! E-log entry should be send before start and after finish !!! S.Chekulaev

  14. S.Chekulaev

  15. S.Chekulaev

  16. Access control • ALL users which have P1 role – DSC:LAR:admin,expert,observerand DSC:LARHV:admin,expert,observercan login on the WTS • ACR handshake mechanism is activated on the WTS shell, in order to login on the FSM or (and) local DCS PC access should be confirmed either Shift Leader or LArRun Coordinator • If You have any DCS:LAR(xxx):expert role You can login on the FSM, for example DCS:LARHECLV:expert • If You have P1 - DSC:LAR:admin,expert You can login on the local DCS PC ( HECLV, SCS, FEC, TERMO, ROD, PURITY ) • If You have P1 - DSC:LARHV:admin,expert You can login on the local LAr HV PC P1 roles for HW ONCALLexperts : DCS:LAR:observer,DDCS:LAR:expert,CS:LARHV:expert S.Chekulaev

  17. LAr DCS sub-sytems and last problem (alarms)

  18. ROD crate monitoring and control • HW • 17 Wiener VME crates ( 7 racks in USA15 L2) + 4 TTC crates in USA15 L1 • 4 CANBUS lines to PC ( with one Kvaser Card) installed in ROD rack 10-18 (USA15) • Dedicated cooling station S.Chekulaev

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  21. ROD crate monitoring and control Points to attention : Wiener PS temperature SBC reset exchange of Wiener PS S.Chekulaev

  22. FEC Low Voltage and Temperature • HW • 58x the same system (32 for Barrel and 26 for EC) 280 V Power Supply in USA 15 LV Power Supply in Tile finger region ELMB monitors FEC voltages, water temperature, LV Power supply • 12 CANBUS lines to PC (with 4 Kvaser cards) installed in LAr DCS rack, 2 CAN lines from each cryostat face to warrant the readout and 4 lines in USA 15 (for 280 PS) • 5 CAN Power Supply units (LAr DCS rack in USA15) S.Chekulaev

  23. FEC Low Voltage and Temperature • SW • PVSS project “ ATLLARFEC ”, sys. # 55 , sys. Name = “ATLLARFEC” • JCOP Framework – ELMB, CAN PSU (only) • OPC CANopen server • DDC • STATUS S.Chekulaev

  24. FEC Low Voltage and Temperature S.Chekulaev

  25. LAr Purity • HW • 30 devises inside of the cryostats • 12 analog boards in the front-end crates of the cryostats • 3U crate is housed in the DCS rack (6 boards) • After digitization and histograming the results are transferred via a CANBUS to a PC. S.Chekulaev

  26. LAr Purity • SW • Readout with Labview • PVSS project “ATLLARPUR”, sys. # 53 , sys. name = “ATLLARPUR” running on the same PC • OPC server for communication Labview and PVSS • Point to attention : • Purity spikes S.Chekulaev

  27. S.Chekulaev

  28. FCAL current Purity Barrel C3 S.Chekulaev

  29. HEC LV system • HW • 270 V power supply in USA 15 • 4 HEC Low Voltage Power boxes per EC in Tile finger Region, 8 in total • 9 ELMB/per box ( 8 ELMB will be used for the control and measurement of the low voltage regulators and one to monitor and control power box) • 9 CANBUS lines ( 1 line/box + 1 for 270 PS) • Serial control lines for redundancy • SW • PVSS project “ ATLLARHECLV ”, sys. # 52 , sys.name = “ATLLARHECLV” • OPC server S.Chekulaev

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