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AGATA Simulated Datasets

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For more information on the simulation code contact Enrico Farnea.
Last updated: May 15th 2006
  1. Set 1: spherical shell, 1.33 MeV photons, beta=0.0%, Geant4 Low Energy electromagnetic interactions (no polarization)
  2. Set 2: spherical shell, 1.33 MeV photons, beta=0.0%, G4LECS Low Energy electromagnetic interactions (no polarization)
  3. Set 3: spherical shell, 1.33 MeV photons, beta=0.0%, standard electromagnetic interactions, right interaction order
Benchmark data to compare the tracking algorithms: in all cases the ideal spherical shell (inner radius 15cm, outer radius 24cm) is considered. The preprocessed datasets have been obtained considering an energy dependent packing/smearing distance, where a 3D gaussian is used having 5mm FWHM on each axis at 100 keV photon energy, with an inverse dependence on the square root of the photon energy.

Original datasets:
  • Set 1: 200 keV photons, point source positioned in the centre
  • Set 2: 500 keV photons, point source positioned in the centre
  • Set 3: 1000 keV photons, point source positioned in the centre
  • Set 4: 200 keV photons, point source positioned 1m away from the centre
  • Set 5: 500 keV photons, point source positioned 1m away from the centre
  • Set 6: 1000 keV photons, point source positioned 1m away from the centre
Preprocessed datasets:
  • Set 1: 200 keV photons, point source positioned in the centre
  • Set 2: 500 keV photons, point source positioned in the centre
  • Set 3: 1000 keV photons, point source positioned in the centre
  • Set 4: 200 keV photons, point source positioned 1m away from the centre
  • Set 5: 500 keV photons, point source positioned 1m away from the centre
  • Set 6: 1000 keV photons, point source positioned 1m away from the centre
Results obtained with the mgt code:
The following results have been obtained processing the above files with the mgt code, assuming also in the case of an off-centre point source that the source position was the actual geometrical centre of the shell:


200 keV
500 keV
1000 keV
Tracking efficiency
Centre
95.3%
94.5% 92.7%
Off-centre
57.4% 74.4% 78.7%
P/T Ratio
Centre
96.6%
91.0%
80.0%
Off-centre
99.4%
77.3%
66.6%


Data for pulse shape simulation: in all cases the symmetrical capsule is considered and the source is positioned at 10 cm from the front face of the detector.
  • Set 1: 1.00 MeV photons, following the energy release of the electrons
  • Set 2: 1.00 MeV photons, primary gamma interaction points
  • Set 3: 1.33 MeV photons, following the energy release of the electrons
  • Set 4: 1.33 MeV photons, primary gamma interaction points

Data for the Cologne in-beam test: a single 1.382 MeV photon is emitted with isotropical distribution from a source moving with 7% velocity along the z axis. The symmetric cluster is placed in the same position as in the in-beam test.
  • Set 1: following the energy release of the electrons
  • Set 2: primary gamma interaction points