Bug #3731

Make COMPTEL IAQ weighting compliant with COMPASS

Added by Knödlseder Jürgen almost 3 years ago. Updated almost 3 years ago.

Status:ClosedStart date:06/14/2021
Priority:HighDue 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) Knödlseder Jürgen, 06/18/2021 12:48 PM

comparison_20210617_3-10MeV.png (161 KB) Knödlseder Jürgen, 06/18/2021 12:48 PM

comparison_20210617_10-30MeV.png (164 KB) Knödlseder Jürgen, 06/18/2021 12:48 PM

comparison_20210617_1-3MeV.png (175 KB) Knödlseder Jürgen, 06/18/2021 12:48 PM

Comparison_20210617_0.75-1mev Comparison_20210617_3-10mev Comparison_20210617_10-30mev Comparison_20210617_1-3mev

Recurrence

No recurrence.

History

#1 Updated by Knödlseder Jürgen almost 3 years ago

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:

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 almost 3 years ago

  • Status changed from Pull request to Closed
  • % Done changed from 90 to 100

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