“ “ Monitoring System for Monitoring System for the Heaters used in the the Heaters used in the ATLAS Inner Detector ATLAS Inner Detector Evaporative Cooling Evaporative Cooling System” System” Suzie Sheehy CERN Summer Student Program 11 th August 2005 Suzie Sheehy University of Melbourne Australia
“Monitoring System for the Heaters used in the ATLAS Inner Detector Evaporative Cooling System”
Jan 02, 2016
“Monitoring System for the Heaters used in the ATLAS Inner Detector Evaporative Cooling System”. Suzie Sheehy University of Melbourne Australia. Suzie SheehyCERN Summer Student Program11 th August 2005. Overview. Where project fits in Inner Detector Evaporative Cooling System - PowerPoint PPT Presentation
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““Monitoring System for the Monitoring System for the Heaters used in the ATLAS Heaters used in the ATLAS Inner Detector Evaporative Inner Detector Evaporative
Cooling System”Cooling System”
Suzie Sheehy CERN Summer Student Program 11th August 2005
Suzie Sheehy
University of Melbourne
Australia
Suzie Sheehy CERN Summer Student Program 11th August 2005
OverviewOverview
• Where project fits inWhere project fits in
• Inner DetectorInner Detector
• Evaporative Cooling SystemEvaporative Cooling System
• HeatersHeaters
• DetailsDetails
• ProgressProgress
• Still to come…Still to come…
Heaters
Evaporative Cooling System
Inner Detector
ATLAS detector HIGGS &
SUSY
Monitor Panel (PVSS)
Suzie Sheehy CERN Summer Student Program 11th August 2005
Where the Project fits in…Where the Project fits in…
CAN-bus + ELMB
The ATLAS DetectorThe ATLAS Detector
Inner DetectorInner Detector
Suzie Sheehy CERN Summer Student Program 11th August 2005
Evaporative Cooling SystemEvaporative Cooling System• Evaporative fluorocarbon (C3F8) system cools the Pixel and SCT volume inside thermal enclosure
•System has to remove about 60kW of heat from detector
•Like a normal refrigerator
Condenser
Capillaries
Liquid at room temperature
Expands to saturated state
Detector Structure
Heater
Residual Liquid
Compressor
Superheated Vapor State
Suzie Sheehy CERN Summer Student Program 11th August 2005
HeatersHeaters
Suzie Sheehy CERN Summer Student Program 11th August 2005
Pixels: 88
Barrel: 44
EndCap: 36 x 2
Total = 204 Heaters
Need a system to:
• monitor the temperature, current and interlock status of each heater.
• provide alerts when approaching abnormal or unacceptable values
• control to rectify problems (provided by a different system)
Heater unit
3 x ELMBs
The Age Old Battle: The Age Old Battle: Software vs. HardwareSoftware vs. Hardware
HEATER
ELMB (Embedded Local Monitor Board) x 3
CANbus card in computer
Monitoring panel made in PVSS based on C code
Suzie Sheehy CERN Summer Student Program 11th August 2005
The Monitor PanelsThe Monitor Panels
Suzie Sheehy CERN Summer Student Program 11th August 2005
Progress…Progress…
Suzie Sheehy CERN Summer Student Program 11th August 2005
• Basic Panels
• Format for displaying 204 at the same time
• Basic read/write ability to hardware
• Software/Hardware interface
Still to come…Still to come…
Suzie Sheehy CERN Summer Student Program 11th August 2005
The End!!The End!!
Any Questions??Any Questions??
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