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ECAL Detector Control System : Status Report

ECAL Detector Control System : Status Report. G. Dissertori ETHZ 17.10.2002. ECAL Electronics, DCS. Outline News The M0’ experience Current activities Plans/Next Conclusions. ECAL Electronics, DCS. News. Specification document finally released (today)

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ECAL Detector Control System : Status Report

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  1. ECAL Detector Control System : Status Report G. Dissertori ETHZ 17.10.2002 G. Dissertori ETHZ

  2. ECAL Electronics, DCS Outline • News • The M0’ experience • Current activities • Plans/Next • Conclusions G. Dissertori ETHZ

  3. ECAL Electronics, DCS News • Specification document finally released (today) • collected comments from P. Bloch and from the members of the DCS group • circulate now inside the collaboration • Deputy project leader • would like to propose Serguei Zelepoukine from IHEP Protvino as Deputy Project Leader G. Dissertori ETHZ

  4. ECAL Electronics, DCS The M0’ experience • Excellent work done by S. Zelepoukine and the Belgrade group • Precision Temperature Monitoring • we can achieve the precision required • The ATLAS ELMB is a viable backup solution for the readout system if placed not too close to the detector • Safety system • A safety system with interlocks to the HV/LV has been built and operated • discovered large sensitivity of the PLC to the environmental noise --> to be propagated to JCOP/ITCO • PVSS on Windows: not yet as stable as we would like... • no interface yet to the DAQ G. Dissertori ETHZ

  5. ECAL Electronics, DCS Current activities • Sensor issues • Humidity sensors : • together with Tracker DCS group a large number of possible sensor types is currently evaluated, tested, irradiated etc. • Specifications (chosen sensor) hopefully by end of the year. • Pressure/flow meters : • together with Tracker DCS group and Frank Glege we are elaborating a little requirements document in order to start a discussion/collaboration with the cooling people. • We would like that they choose and install the sensors, and that we take care of the read out and safety actions. G. Dissertori ETHZ

  6. ECAL Electronics, DCS Current activities... • RBFE board • Two technicians from Protvino together with the LHC-ACR group • study and test of the RBFE (Resistance Bridge Front End) board • for sensor excitation and signal conditioning before sending over long signal cable • want to combine this with a MUX --> investigations of MUX candidates (issue : radiation hardness) G. Dissertori ETHZ

  7. ECAL Electronics, DCS Current activities... • Lab test of Keithley readout system • Student from ETH together with W. Lustermann and S. Zelepoukine • study of cascaded MUXing    system •   analysis of switching time     limits ---> current limit     coming from the RBFE board •   analysis of signal precision     over long cable (120m) • test will be carried on by a    further ETH PhD student G. Dissertori ETHZ

  8. ECAL Electronics, DCS Current activities.... • Software • ETH student (Alison Lister) has started to work on software framework, as well on first PVSS set-up for the temperature monitoring • will also look into the communication with XDAQ and databases • Cabling • Serguei has started to discuss with the CMS Integration group about the cabling layout for DCS : G. Dissertori ETHZ

  9. Counting room CMS Barrel Endcap Barrel ECAL DCS cabling and front-end electronics layout Electronics ECAL Electronics, DCS G. Dissertori ETHZ

  10. 45 Keithley PC x 45 x 10 1 TMUX 45 x 10 Keithley PC x 45 TMUX 8 6 x 10 PC CAN 2 ELMB 45 x 45 Keithley PC TMUX 3 45 1 PC CAN 4 TMUX ELMB 50 m 100 m Detector Balcony Counting room ECAL Electronics, DCS G. Dissertori ETHZ

  11. ECAL Electronics, DCS Plans/Next • Irradiation tests • plan to go with a small group to PSI (end of Nov) in order to do irradation tests of the RBFE board components • SM0 integration test • we start ordering items • bring some of the M0’ setups back to B27 to be used there for those tests G. Dissertori ETHZ

  12. ECAL Electronics, DCS Conclusions • Overall good momentum • My worries • will be difficult to keep this momentum over the winter months, since the main actors will not be at CERN or be overloaded with other duties • have to well define the activities which can be carried out in the home labs • DCS for Preshower : need urgently resources • A question • has anybody in CMS in general thought about the issue of Galvanic isolation (detector - counting house) for the DCS system?? G. Dissertori ETHZ

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