CDC algo tuning
From GlueXWiki
Using prototype data from CDC_50_50 (run 31924) with offline analysis
50/50 Ar/CO2 and cosmics, 2100V, prototype horizontal
Original code, many samples upsampled
- Find hit threshold crossing
- Step back <pedlead> points to find new pedestal
- Search forward to find high threshold crossing
- Search backward to find low threshold crossing
- Project through both thresholds to find pedestal crossing time
Fewer samples upsampled
- Find hit threshold crossing
- Upsample region around threshold crossing, with threshold crossing sample in set position
- Step back <pedlead> points to find new pedestal
- Search forward to find high threshold crossing
- Search backward to find low threshold crossing
- Project through both thresholds to find pedestal crossing time
Ideas
- Check whether interpolating threshold xings makes any difference
- ? Pass in hit pedestal to upsampling module, to find initial hit threshold xing better
- Or interpolate around initial hit threshold xing and pass in number of 1/5 sample time?
- Try reverting to one threshold crossing instead of the extrapolation