1 / 14

Pixel Heaters Refurbishment

Pixel Heaters Refurbishment. 22 .01.2014 A.Bitadze. Work done:. Core resistance measurements (for the heating element). Isolation resistance measurements. Measurement are done every month to monitor changes

latika
Download Presentation

Pixel Heaters Refurbishment

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. Pixel HeatersRefurbishment 22.01.2014 A.Bitadze

  2. Work done: • Core resistance measurements (for the heating element). • Isolation resistance measurements. Measurement are done every month to monitor changes • Inspection of the control, interlock and C31/C32/C33 temperature sensors and connectors. • Relabeling temperature sensor cables and connectors. • Checking existing spare heaters. • Created existing spare heater inventory (Twiki page). • Ordered 16 Spare heaters from THERMOCOAX. • Created EDMS folder for documentation.

  3. Work done: Design Resistance:Barrel/Opto 20.23 Ω Discs 38.01 Ω • Core resistance measurements.

  4. Work done: Design Resistance:Barrel/Opto 20.23 Ω Discs 38.01 Ω • Core resistance measurements.

  5. Work done: • Core resistance measurements.

  6. Work done: • Measured isolation resistance for the Heater on Loop 084 was 450 MΩ.Measurements in 09.07.2013 were showing O.L. in GΩ range. • Measurements in 29.08.2013 were showing 450 MΩ . • Measurements in 27.09.2013 were showing O.L. in GΩ range. • Measurements in 27.10.2013 are showing O.L. in GΩ range. • Measured isolation resistance for the Heater on Loop 005 is 0.11 MΩ.Measurements in 09.07.2013 were showing O.L. in GΩ range. • Measurements in 29.08.2013 were showing O.L. in GΩ range. • Measurements in 27.09.2013 were showing 0.11 MΩ. Measurements in 27.10.2013 are showing 0.11 MΩ. All other heaters show O.L. for the isolation resistance in GΩ range • Isolation resistance measurements.

  7. Work done: Damaged: 5 Thermocouples 19 NTC 1 Connector (for C33 sensors) Damaged sensor/connector inventory: • Inspection of the control, interlock and C31/C32/C33 temperature sensors and connectors.

  8. Work done: • Relabeling temperature sensor cables / connectors.

  9. Work done: https://twiki.cern.ch/twiki/bin/viewauth/Atlas/HeaterSpares • Checking existing spare heaters. • Created existing spare heater inventory (Twiki page).

  10. Work done: 16 Assemblies56 000 CHF • Ordered 16 Spare heaters from THERMOCOAX.

  11. Work done: This EDMS folder contains all documents (Drawings, Measurement Data, Plots, Presentations, Meeting minutes…) related to the heater refurbishment activities. ID Evaporative Cooling System Heater Refurbishment 2013 EDMS Id: 1325444 https://edms.cern.ch/document/1325444/1 and sub-documents for: PIXEL Heaters EDMS Id: 1325445  https://edms.cern.ch/document/1325445/1 SCT Heaters EDMS Id: 1325446  https://edms.cern.ch/document/1325446/1 Spare Heaters EDMS Id: 1325449 https://edms.cern.ch/document/1325449/1 Presentations / Meeting minutes EDMS Id: 1325448  https://edms.cern.ch/document/1325448/1 • Created EDMS folder for documentation.

  12. On-going activities and plans: • Fixing Broken Sensors (5 TC, 19 NTC, 1 Connector). • Solder Lemo Connectors on control sensor cables (2x88 in SR1 + 2x88 in pit = total 352). • Attach TC sensors instead of C33 NTC sensors (33 sensors).Solder Lemo Connectors on these control sensor cables. • Endescope inspection for 20% of heaters. • Pressure Test at 7barabs.Parts are ready: Manifold, Pressure Sensors, Readout box, PC, Labview program. • Leak Test.

  13. Timetable :

  14. THANK YOU FOR YOUR ATTANTION

More Related