1 / 24

Status Report: ECAL Detector Control System

Status Report: ECAL Detector Control System. S. Zelepoukine IHEP Protvino/ETHZ 28.3.2003. Outline. Precision temperature monitoring Humidity monitoring Temperature safety system (TSS) Preshower Software (PVSS) H4 testbeam 2003 Bld.867, DCS lab, other activities Conclusions.

vina
Download Presentation

Status Report: ECAL Detector Control System

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Status Report:ECAL Detector Control System S. Zelepoukine IHEP Protvino/ETHZ 28.3.2003 S. Zelepoukine

  2. Outline • Precision temperature monitoring • Humidity monitoring • Temperature safety system (TSS) • Preshower • Software (PVSS) • H4 testbeam 2003 • Bld.867, DCS lab, other activities • Conclusions S. Zelepoukine

  3. Precision temperature monitoring • monitor temperature stability (thermal screen, grid). • precision required : at least 0.01 deg (relative). • sensors: Betatherm Thermistors (NTC) — approx. 500 (EB+EE) • sensor location (in a SM, similar in EE quadrant): • grid — 1 sensor in each module; • thermal screen — 1 sensor in each module; • IN/OUT cooling pipes — 2 sensors per SM. Total: 10 sensors per SM (EE quadrant) • readout (several options are considered): • Keithley multimeter with/without a remote transducer; • ELMB with/without a remote transducer (a backup solution). S. Zelepoukine

  4. Precision temperature monitoring Status — sensor probes: • Exact sensor location is defined (symmetrical in SM). • Sensor probe design is finalized (grid + thermal screen). • Immersion probe for In/Out cooling pipes: OK for SM0 (F.Mossiere); To be defined for SMx. • Sensor installation procedure: • defined for the thermal screen; • to be defined for the grid and In/Out pipes. • Sensor cabling inside SM: • use flat cable (or single twisted pairs); • reconsider patch panel connector (crimped / IDC ?). • Preliminary offers obtained : ~ 10 CHF per sensor (factory pre-calibrated!) S. Zelepoukine

  5. Precision temperature monitoring Sensor positioning on the thermal screen SM0 SM1, ... Sensor positioning on the grid SM0, ... S. Zelepoukine

  6. Precision temperature monitoring Sensor positioning on cooling pipes (immersion probes) F.Mossiere, EST/ME S. Zelepoukine

  7. Temperature probe (V.3) Screws (2.5mm) 17 mm section 10 mm Alumin. plate 10 mm 10 mm 2x holes diameter = 3 mm Temperature probes to be installed on the thermal screen and on the grid. Material — aluminium alloy; therm.conductivity k = 170 W/m*K S. Zelepoukine

  8. Temp.probe – finite element model Delta T = 1 K (plate – air) Delta T = 0.06 mK (sensor location) A.Riabov (IHEP, Protvino) S. Zelepoukine

  9. Precision temperature monitoring • Status — readout: • ELMB will still be used for the setup in H4 / Bld.867. In the meantime, Keithley [+ T-MUX] options are to be tested. • Transducer (T-MUX) is under development: T-MUX = analog multiplexer + RBFE ASIC (LHC/ACR) • Non rad-hard MUX (Maxim) irradiated at PSI (Dec.02), see CMS Int.note; Results are negative for high rad.doses (>10 years inside ECAL): parameters are not stable enough for required precision. Can still be considered if placed on the balcony and periodically replaced. • Rad-hard MUX (EP/MIC) considered to be used for the second T-MUX version. For this I2C remote connection has to be implemented. • Prototype PCB is produced at IHEP (Andrei Sidorov, IHEP); should now be assembled and tested in the lab — no irradiation testing required. • Keithley tests in the lab (Alison Lister, ETHZ) • long cables (~ 100m) — switching rate, noise effects; • 2-wire / 4-wire sensor connection. S. Zelepoukine

  10. Precision temperature monitoring Keithley measurements: 2-wire connection, long cable Switching_ 2_ point, integration time= 0. 5s 0.01 Ohm Alison Lister, ETHZ S. Zelepoukine

  11. Humidity monitoring • Collaboration with CMS Tracker DCS (A.Tsirou) for sensor study and selection. Also, sensor electronics. • Several types of sensors being tested in the Tracker lab. • New sensors from Hygrometrix at medium price (~ 15 CHF). • Irradiation tests at PSI will start soon (in 1-2 weeks). • Non rad-hard sensors will be used in H4 setup (to obtain experience; provide input for integration). S. Zelepoukine

  12. Temperature Safety System (TSS) TSS (VINCA, Belgrade): • Preparing for SM0, SM1. (to be defined: exact sensor location, probe construction) • The same functionality as at M0’ (interlocks). • RBFE based board — testing is in progress in Belgrade. S. Zelepoukine

  13. Temperature Safety System (TSS) Prototype PCB is under test — RBFE + multiplexer for 8 channels S. Zelepoukine

  14. Preshower DCS for Preshower: • Preshower DCS will not just cover cooling control and temperature monitoring, but also safety monitoring. • NCU Taiwan will take up the DCS for preshower. • Manpower: Apollo Go and Chia-Ming Kuo. • Started to look into using PLC's (Apollo) and soon PVSS (Ming) • Made some cost estimate (Dave Barney) • Study of cabling (Piet Wertelaers) • Will soon write a specification document (Apollo and Dave) S. Zelepoukine

  15. Software • Software developments (Alison Lister, ETHZ): • working on Supervisory System (FSM); • HV application; • Cooling system application; • Plans to implement LV application; • studying methods to access non-PVSS database. • Igor Lobov just has started with PVSS at IHEP, Protvino. S. Zelepoukine

  16. Software PVSS Panel for Cooling Unit: S. Zelepoukine

  17. H4 testbeam 2003 • Finishing sensor installation — SM0; testing in Bld.27 (?) • Preparing sensor readout (ELMB + CANbus) and PC in H4 • Integration of PVSS applications • Provide the “PVSS — data acquisition system” interface • Support the Endcap EE0’ tests in H4 — use same setup (?) S. Zelepoukine

  18. Bld.867, DCS lab, other activities • A setup needs to be defined to support DCS related activities in Bld.867 (all sensors must be verified for proper operation after installation). PC/PVSS + ELMB ? • DCS lab is now existing! Bld.892-R-B11 Concentrate all hardware related work there (probe production, testing, readout electronics testing, sensor calibration, etc.). • Sensor database has to be created and maintained. S. Zelepoukine

  19. Conclusions • Sensor installation is close to the final solution (sensor location, probes, cables, connectors) • Temperature sensors/probes— preparing for production. • Humidity sensors should be selected soon — based on irradiation tests at PSI. • Sensor readout still to be defined from several options under consideration and testing (T-MUX, RBFE, Keithley, ELMB). • Will concentrate on readout and CMS integration after the sensor installation work on SM0 is completed. • Software developments — good progress. S. Zelepoukine

  20. Backup slides S. Zelepoukine

  21. Temp.probes in cooling pipes F.Mossiere, EST/ME S. Zelepoukine

  22. Temp.probes in cooling pipes F.Mossiere, EST/ME S. Zelepoukine

  23. Temp.probe : finite element model 0.06 mK S. Zelepoukine

  24. Temp.probe : finite element model S. Zelepoukine

More Related