Difference between revisions of "SoLID Ecal Weekly 20231005"
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(→Update on MIP study) |
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**Fix 40ns as the integral TW in the decoder | **Fix 40ns as the integral TW in the decoder | ||
**SC_A & SC_D trigger efficiency is very low at ~3%, in order to get pion dominant samples, we need to apply Shower_{i}/ShowerSum>0.8+ 200 ADC<preshower<500 ADC cuts. | **SC_A & SC_D trigger efficiency is very low at ~3%, in order to get pion dominant samples, we need to apply Shower_{i}/ShowerSum>0.8+ 200 ADC<preshower<500 ADC cuts. | ||
| + | **The conclusion is that the MIP peaks we looked at are indeed MIP peaks, there is no confusion about that. | ||
==Pion rejection study== | ==Pion rejection study== | ||
Mike's slides | Mike's slides | ||
| + | *comments from the meeting: | ||
| + | **get the correct bg-mixing method from Zhiwen | ||
| + | **for data, add calibration of Sh vs. PS using MIP positions and the simulated Edep of MIP. | ||
| + | **use simulation to study whether there are low-energy electrons in the data pion sample. The plot of "SH+PS sum" suggests there are, because it looks like a small MIP peak sitting on top of a larger low-energy tail. | ||
Revision as of 11:33, 6 October 2023
Update on MIP study
Ye's slides [1]
- To clean up the MIP data sample:
- Baseline shift correction
- Gain shift correction (based on MIP height)
- Fix 40ns as the integral TW in the decoder
- SC_A & SC_D trigger efficiency is very low at ~3%, in order to get pion dominant samples, we need to apply Shower_{i}/ShowerSum>0.8+ 200 ADC<preshower<500 ADC cuts.
- The conclusion is that the MIP peaks we looked at are indeed MIP peaks, there is no confusion about that.
Pion rejection study
Mike's slides
- comments from the meeting:
- get the correct bg-mixing method from Zhiwen
- for data, add calibration of Sh vs. PS using MIP positions and the simulated Edep of MIP.
- use simulation to study whether there are low-energy electrons in the data pion sample. The plot of "SH+PS sum" suggests there are, because it looks like a small MIP peak sitting on top of a larger low-energy tail.
