FPD Calibration Studies
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Michael Strang FTG Meeting 2-Sep-03 FPD Calibration Studies Michael Strang University of Texas at Arlington
description
FPD Calibration Studies. Michael Strang University of Texas at Arlington. First Appearance of Problem. This is a recent calibration with 0x400 gain on board. Notice the dropping of the mean at the edge of SIFT chips happening on two boards in different cassettes. Old data looking for problem. - PowerPoint PPT Presentation
Transcript of FPD Calibration Studies
Michael StrangFTG Meeting 2-Sep-03
FPD Calibration StudiesFPD Calibration Studies
Michael Strang
University of Texas at Arlington
Michael StrangFTG Meeting 2-Sep-03
First Appearance of ProblemFirst Appearance of Problem14A6
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This is a recent calibration with 0x400 gain on board. Notice the dropping of the mean at the edge of SIFT chips happening on two boards in different cassettes
Michael StrangFTG Meeting 2-Sep-03
Old data looking for problemOld data looking for problem14A6
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This is an old calibration (around April) with 0x400 gain on board. The evidence of this structure is not as clear if it is present at all.
Michael StrangFTG Meeting 2-Sep-03
Trying to isolate problemTrying to isolate problem14A6
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During recent access last week, we unplugged the bayonet, unplugged the cables from the tunnel going to the TPP and isolated the TPP from contact with anything else (flex cables still connected) and structure is very clear.
Michael StrangFTG Meeting 2-Sep-03
Looked at CFT boards as wellLooked at CFT boards as wellCrate 53, Slot 13, HDI 7
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For comparison, looked at a random board from a different crate (53). Surprisingly, this same structure is present in parts of the board so while this problem seems enhanced in the FPD boards, it appears to be present in other boards as well.
