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ECAL DCS @H4

CMS DCS. ECAL DCS. ECAL DCS @H4. Trigger/DAQ project  DCS. Status report. G. Dissertori DCS Coordination Board, Nov 10, 2004. Outline. Overview Precision Temperature Monitoring (PTM) Humidity Measurement (HM) ECAL Safety System (ESS) PVSS Monitoring (and related issues)

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ECAL DCS @H4

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  1. CMS DCS ECAL DCS ECAL DCS @H4 Trigger/DAQ project  DCS Status report G. Dissertori DCS Coordination Board, Nov 10, 2004 ECAL - DCS

  2. Outline • Overview • Precision Temperature Monitoring (PTM) • Humidity Measurement (HM) • ECAL Safety System (ESS) • PVSS Monitoring (and related issues) • Note : For details on the PTM/HM and ESS hardware (sensors, readout) I refer to the DCS ESR, May 04! ECAL - DCS

  3. prec. temp. sensor ESS temp. sensor + WLD humidity sensor Monitoring interlock Monitoring Safety, PLC cooling, faults Overview Laser system cooling Data Bases ECAL module Offline, DAQ crystal PCBs for VFE and FE PVSS LV, HV ECAL - DCS

  4. SM10 ECAL - DCS

  5. PTM Precision Temperature Monitoring - PTM S. Zelepoukine, IHEP Protvino and ETHZ ECAL - DCS

  6. PTM • Requirements: • very high precision temp. monitoring : check stability of water cooling system, to stay within 0.02 - 0.05 deg C. • no hardwired feedback to cooling • relative precision : 0.01 deg C • one sensor/module on thermal screen and grid • main water IN, main water OUT ECAL - DCS

  7. PTM : Sensor location Sensor probes location inside SM: M1 M2 M3 M4 Patch panel Grid Probes of type 1 (N = 4 + 4) Probes of type 2 (N = 2) Patch panel Thermal screen Number of probes (per SM): 4 + 4 + 2 = 10 Each probe has its own signal cable – twisted pair ECAL - DCS

  8. PTM : Readout - Layout Network access Counting room UXC55 balcony: ECAL PC / PVSS Cur.src CANbus cables DC Power supplies ELMB 20x2 STP cables Galvanic isolation ~ 500 sensors (NTC thermistor Betatherm; 100K @ 25C; indiv.calibrated; better than 0.01C rel.accuracy) Readout electronics: ELMB based; ELMB reads voltages and converts to digital data, then sends data via CANbus. DC-DC converters Monitoring application: PVSS based; data storage/archiving, visualization/trending, warnings/alarms. ECAL - DCS

  9. PTM @ H4 ECAL - DCS

  10. Recent Results • First results from SM10 at H4: • Sensors, sensor probes, read-out practically final • Reading 4 sensors on grid, 3 sensors on thermal screen, and Water IN/OUT • One sensor lost, most likely due to bad intermediate connection inside SM before PP • Since about one week : installed 2 sensors on backplate • Above M1 and M4 ECAL - DCS

  11. Zoom Cooling Stability ECAL - DCS

  12. Grid M4 0.01C M3, M2 M1 Zoom : Thermal screen M4, M3 M1 0.01C Water - IN 0.01C Cooling stability = 0.01C (incl. day/night oscillations) ECAL - DCS

  13. Grid Div = 0.01C Just to show uncompressed (in time) data… Thermal screen Div = 0.01C Water - IN Div = 0.01C Ambient Div = 1.0C 10 min ECAL - DCS

  14. M1 M2 M3 M4 28.5 30.6 28.2 25.7 M2 M1, M3 M4 Inside the electronics compartment From ESS, see later… ECAL - DCS

  15. Conclusions on PTM • Cooling stability: • Achieved 0.01 C in the long-term, including day/night variations • Have a monitoring application, Serguei is working on a more “final” version… • Temperatures on outer surfaces • Recent measurements performed by Serguei • Is heating towards outside (or inside, depending on orientation) an issue? For other detectors? For other SMs ? • As next step, Serguei will move external sensors to lateral surfaces… • Hardware • Resolve issue of immersion probes • Intermediate connections will not be there any more ECAL - DCS

  16. HM Humidity Monitoring - HM S. Zelepoukine, IHEP Protvino and ETHZ ECAL - DCS

  17. Requirements • For HM we want to • Measure humidity level inside modules, precision about 5% • Sensors • One per module • UPS600 from Ohmic Instruments, resistive type, cheap • Transducers also from Ohmic Instr, • Readout • Same principles as for PTM : ELMB + Canbus to PC ECAL - DCS

  18. RH cable shield grounded to SM10 M1, M3, M4 M2 (conn.broken) RH – inside SM10 RH -- ambient Amb1/2 (SM10) Amb_3 (DCS rack) water out Water temperatures water in Ambient temperatures ECAL - DCS

  19. HM : Conclusions • A complete SM has been equipped with RH sensors and readout (SM10 in H4 testbeam) • Non-calibrated sensors/transmitters were used for SM10 • nevertheless acceptable channel to channel variations (2-4 %RH). • The RH readout chain “sensor-transmitter-ADC” is rather sensitive to the grounding of the HM signal cable shield: changing the grounding point can result in an offset for the measured RH value equal to about 10% RH • A detailed lab study is planned for investigating HM grounding issues. Also we would like to make the sensor excitation voltage frequency as low as possible (now = 440 Hz) – this will certainly require to recalibrate all transmitters at the new (lower) frequency. • A humidity generator has been ordered and now delivered. Building a laboratory setup for automated RH sensor/transmitter calibration is in progress now. ECAL - DCS

  20. ESS ECAL Safety System - ESS formerly : TSS (Temperature Safety System) See also CMS NOTE 2004-013 Belgrade group, ETHZ ECAL - DCS

  21. RS485 RS485 Schematic layout • Three interconnected system layers: • Temperature conversion and channel multiplexing -ESS FE Layer, • Data acquisition, data processing and interlock generating -ESS PLC Layer, • System monitoring and system control -ESS Soft Layer; ? ECAL - DCS

  22. ESS : Sensor Location Sensors : NTC 470 Ohms thermistors (EPCOS) positioned in pairs at each measurement point ( “Twin” sensors ). 2x twisted pair cable SCEM = 04.21.51.704.4, 2x2x0.05mm2, outside diameter 2.9mm, PETP insulation ECAL - DCS

  23. ESS : PLC Siemens S7- 400 Family PLC System for ESS: ECAL - DCS

  24. ECAL - DCS

  25. Experience up to now • Excellent performance of ESS • No problem during SM10 running up to now • Interlock tests at the startup were successful • Afterwards, no interlock up to now ECAL - DCS

  26. PVSS Monitoring and Control See also talk by Bobby… Will also give a detailed presentation at a future JCOP meeting…. S. Zelepoukine, P. Milenovic, R. Ofierzynski, F. Beaudette, A. Lister, R. Gomez-Reino, F. Glege Also : Thanks to S. Schmeling / JCOP ECAL - DCS

  27. PVSS @H4 • Have implemented the monitoring of the following subsystems: • Temperatures from ESS • Water Leakage Detection System (via ESS) • Temperatures from PTM • Humidity (HM) • Cooling System (temperatures, flow, pressures) • Status of Laser System • HV and LV • Not implemented • Temperatures from DCUs • Storage to ORACLE DB ECAL - DCS

  28. PVSS @H4 : Prototype for ECAL • First complete set-up of PVSS DCS system • At H4, includes: • PTM - HM - ESS - LV - HV - Cooling - Laser • + Supervisory system • Every application implements a Finite State Machine • Based on PVSS II, v.3, and the JCOP framework • Distributed system (Windows XP) on 3 PCs : • 1 : Supervisor, Laser, Cooling • 2 : HV, LV • 3 : PTM, HM, ESS ECAL - DCS

  29. PVSS @H4 : Data Logging • For the moment, all data go to the PVSS archive (proprietary) • Not easy to get data out (apart trending, which is ok) • not foreseen as final solution (!) • Done because of pressure to get the FSM at H4 etc running • On the long term : ORACLE • A new expert is joining the efforts (Rick Egeland, Minnesota) • He will try to help us setting up the commun. with ORACLE and to develop scripts to easily retrieve data • But not more to say for the moment….. ECAL - DCS

  30. Major Issues • During development : • Already preparing for the final ECAL application • Some debugging of Framework tools, in particular FSM, was necessary. Thanks to C. Gaspar for her feedback. • Suffered from missing documentation of Framework • Note : The continuous and friendly help by S. Schmeling was absolutely essential !! Thanks!! • HV - LV: • Major problems with the connection to CAEN crates • See dedicated discussion on this topic ECAL - DCS

  31. Supervisory System : 1 ECAL - DCS

  32. Supervisory System : 2 ECAL - DCS

  33. Supervisory System : 3 ECAL - DCS

  34. HV Application ECAL - DCS

  35. LV Application ECAL - DCS

  36. Cooling Application Communication With cooling System via OPC Note: This application only monitors user can not operate the cooling system from here ! ECAL - DCS

  37. ESS Application ECAL - DCS

  38. Conclusions • Hardware • PTM / HM / ESS • performs according to specs • Able to monitor temperature stability to 0.01 C • Software • Major efforts gone into development of DCS prototype • Achievement more or less our goal • Still unresolved : communication problems with CAEN crates • Note : A major effort in terms of man power was needed. This should be a warning for other sub-detectors….. ECAL - DCS

  39. Other issues… Switch to ELMB analog DC supply (RH uses a separate 5VDC supply) ECAL - DCS

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