Evaporative Cooling for the Inner Detectors of ATLAS

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Presentation transcript:

Evaporative Cooling for the Inner Detectors of ATLAS Lauranne Lanz August 10, 2006 University of Maryland, College Park University of Michigan/CERN REU Advisor: Dr. Steve McMahon Supervisor: Dr. Leonardo Rossi

Why … is Cooling Necessary? Evaporative Cooling? Detectors need to operate at ~ -7°C SCT  41.3 kW Pixel detector  18.7 kW Evaporative Cooling? Evaporative Cooling  removal of heat through the use of latent heat of evaporation Advantages: Minimal material C3F8 High heat transfer for low mass Radiation hard

Evaporative Cooling Process Fluid: Comes from condenser as room temperature liquid Cools in and expands from capillaries Enters detector structures and absorbs heat

Evaporative Cooling Process Remaining fluid evaporated Vapor brought to 12°C Reaches compressor as superheated vapor Enters condenser as pressurized vapor

Motivation Complex circuits ATLAS construction scheme Pixel detector - 88 circuits SCT barrel+endcaps - 116 circuits ATLAS construction scheme Need for user-friendly interface

My Project Develop a Java program capable of: Online deployment Importing data from the current format Creating table Creating tables of data subsets Obtain information on one circuit Export the information to printable form

Process Learn Java and Eclipse Write programs to use test data to: Import Excel information Make tables Obtain one set of information Online deployment Adapt to actual Excel file Add Export feature Comment Program

Results

Results Construction: Inner detector components are not being built in the pit. Therefore, there are cables at both ends that need to match. Further, built detector != actual detector Therefore, mapping of circuits undertaken but info is not readily accessible Learning java to create java applets to allow web-based access of that information

Results

Results

Future directions Deployment Direct link to printer

Acknowledgements Mentor - Dr.Steve McMahon Vit Sopko U. Michigan Dr. Neal Dr. Krisch Jeremy Herr Dr. Goldfarb CERN Summer Program NSF and Ford

Questions?