Difference between revisions of "CDC prototype fADC data"
From GlueXWiki
| Line 2: | Line 2: | ||
{| border="0" cellpadding="2" | {| border="0" cellpadding="2" | ||
| − | |width=" | + | |width="300pt"| |
| − | [[Image:event133.png|thumb| | + | [[Image:event133.png|thumb|300px]] |
| − | |width=" | + | |width="300pt"| |
| − | [[Image:event147.png|thumb| | + | [[Image:event147.png|thumb|300px]] |
|- | |- | ||
| − | |width=" | + | |width="300pt"| |
| − | [[Image:event167.png|thumb| | + | [[Image:event167.png|thumb|300px]] |
| − | |width=" | + | |width="300pt"| |
| − | [[Image:event266.png|thumb| | + | [[Image:event266.png|thumb|300px]] |
| − | |width=" | + | |width="300pt"| |
| − | [[Image:event428.png|thumb| | + | [[Image:event428.png|thumb|300px]] |
|- | |- | ||
| − | |width=" | + | |width="300pt"| |
| − | [[Image:event334.png|thumb| | + | [[Image:event334.png|thumb|300px]] |
| − | |width=" | + | |width="300pt"| |
| − | [[Image:event2411.png|thumb| | + | [[Image:event2411.png|thumb|300px]] |
|- | |- | ||
| − | |width=" | + | |width="300pt"| |
| − | [[Image:event704.png|thumb| | + | [[Image:event704.png|thumb|300px]] |
|} | |} | ||
{| border="0" cellpadding="2" | {| border="0" cellpadding="2" | ||
| − | |width=" | + | |width="300pt"| |
| − | [[Image:run_31716_maxamp20.png|thumb| | + | [[Image:run_31716_maxamp20.png|thumb|300px|Histogram of first max in amplitude exceeding pedestal + 5 sigma ]] |
|} | |} | ||
| Line 32: | Line 32: | ||
{| border="0" cellpadding="2" | {| border="0" cellpadding="2" | ||
| − | |width=" | + | |width="800pt"| |
| − | [[Image:1exp.png|thumb| | + | [[Image:1exp.png|thumb|800px ]] |
|} | |} | ||
{| border="0" cellpadding="2" | {| border="0" cellpadding="2" | ||
| − | |width=" | + | |width="300pt"| |
| − | [[Image:fit133.png|thumb| | + | [[Image:fit133.png|thumb|300px]] |
| − | |width=" | + | |width="300pt"| |
| − | [[Image:fit147.png|thumb| | + | [[Image:fit147.png|thumb|300px]] |
|- | |- | ||
| − | |width=" | + | |width="300pt"| |
| − | [[Image:fit167.png|thumb| | + | [[Image:fit167.png|thumb|300px]] |
| − | |width=" | + | |width="300pt"| |
| − | [[Image:fit266.png|thumb| | + | [[Image:fit266.png|thumb|300px]] |
| − | |width=" | + | |width="300pt"| |
| − | [[Image:fit428.png|thumb| | + | [[Image:fit428.png|thumb|300px]] |
|- | |- | ||
| − | |width=" | + | |width="300pt"| |
| − | [[Image:fit334.png|thumb| | + | [[Image:fit334.png|thumb|300px]] |
| − | |width=" | + | |width="300pt"| |
| − | [[Image:fit2411.png|thumb| | + | [[Image:fit2411.png|thumb|300px]] |
|- | |- | ||
| − | |width=" | + | |width="300pt"| |
| − | [[Image:fit704.png|thumb| | + | [[Image:fit704.png|thumb|300px]] |
|} | |} | ||
Revision as of 16:59, 27 October 2011
Data from cosmics with 50/50 gas, 2100V
Fit attempt 1
Use pedestal before peak, max peak amplitude, end of peak. End of peak is 2 samples after the last sample where ADC value is at least 20 less than the previous sample. 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.
