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))
+
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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Revision as of 16:04, 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