Difference between revisions of "CDC prototype fADC data"

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Fit attempt 1<br/>
 
Fit attempt 1<br/>
 
Use pedestal before peak, max peak amplitude, end of peak - this is the first sample with contents > 20 less than its neighbor, starting with the last sample and working forwards. Function fitted to many events for range end-of-peak to final sample  was pedestal + 0.14 * maxamp * exp(-0.0056*(x-endpeak)) where x=sample number.  The constants were the mean values of the fitted function parameters.   
 
Use pedestal before peak, max peak amplitude, end of peak - this is the first sample with contents > 20 less than its neighbor, starting with the last sample and working forwards. Function fitted to many events for range end-of-peak to final sample  was pedestal + 0.14 * maxamp * exp(-0.0056*(x-endpeak)) where x=sample number.  The constants were the mean values of the fitted function parameters.   
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[[Image:1exp.png|thumb|400px ]]
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[[Image:fit133.png|thumb|400px]]
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[[Image:fit147.png|thumb|400px]]
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[[Image:fit167.png|thumb|400px]]
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[[Image:fit266.png|thumb|400px]]
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[[Image:fit428.png|thumb|400px]]
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[[Image:fit334.png|thumb|400px]]
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[[Image:fit704.png|thumb|400px]]
 
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Revision as of 16:07, 27 October 2011

Data from cosmics with 50/50 gas, 2100V

Event133.png
Event147.png
Event167.png
Event266.png
Event428.png
Event334.png
Event2411.png
Event704.png
Histogram of first max in amplitude exceeding pedestal + 5 sigma

Fit attempt 1
Use pedestal before peak, max peak amplitude, end of peak - this is the first sample with contents > 20 less than its neighbor, starting with the last sample and working forwards. Function fitted to many events for range end-of-peak to final sample was pedestal + 0.14 * maxamp * exp(-0.0056*(x-endpeak)) where x=sample number. The constants were the mean values of the fitted function parameters.

1exp.png
Fit133.png
Fit147.png
Fit167.png
Fit266.png
Fit428.png
Fit334.png
Fit2411.png
Fit704.png