Bug #3731
Make COMPTEL IAQ weighting compliant with COMPASS
| Status: | Closed | Start date: | 06/14/2021 | |
|---|---|---|---|---|
| Priority: | High | Due date: | ||
| Assigned To: |  Knödlseder Jürgen | % Done: | 100% | |
| Category: | - | |||
| Target version: | 2.0.0 | |||
| Duration: |
Description
It turned out that the COMPTEL IAQ weighting was not compliant with the COMPASS software.
comparison_20210617_0.75-1MeV.png (158 KB)
comparison_20210617_3-10MeV.png (161 KB)
comparison_20210617_10-30MeV.png (164 KB)
comparison_20210617_1-3MeV.png (175 KB)
Recurrence
No recurrence.
History
#1
Updated by Knödlseder Jürgen over 3 years ago
- File comparison_20210617_0.75-1MeV.png added
- File comparison_20210617_1-3MeV.png added
- File comparison_20210617_3-10MeV.png added
- File comparison_20210617_10-30MeV.png added
- Status changed from New to Pull request
- % Done changed from 0 to 90
It turned out that the peak amplitudes of the D2 response were not divided by the square root of 2 pi multiplied by sigma. This was corrected. I also included the absorption in the veto shield and the PSD selection efficiency in the computation, and did a few minor adjustments to reproduce exactly the COMPASS energy thresholds. This gave the following results:
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The minor difference in the 0.75-1 MeV response comes from the fact that COMPASS does not a renormalisation of the D1 peak amplitude based on the sigma value, which should however be done. I preferred therefore the implementation with renormalisation.
#2
Updated by Knödlseder Jürgen over 3 years ago
- Status changed from Pull request to Closed
- % Done changed from 90 to 100