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Looking for the best possible geometry for NEDA

Looking for the best possible geometry for NEDA. Optimization of the volume of the detectors Highest efficiency Lowest cross-talk probability. We took into account:. Granularity Modularity Different materials. Definitions:. The Cluster method

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Looking for the best possible geometry for NEDA

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  1. Looking for the best possible geometry for NEDA • Optimization of the volume of the detectors • Highest efficiency • Lowest cross-talk probability We took into account: • Granularity • Modularity • Different materials

  2. Definitions: TheClustermethod Each pair of detectors is checked whether they fit to the drdt gate. If one detector is recognized as having the scattered event from the current cluster is added to that cluster. Thenumber of clustergivesthenumber of neutronsdetected. The drdt gate dr is the distance between the weight centers of two fired detectors. dtis the time difference between the moments of threshold exceedance of each detector, separately.

  3. Definitions: Efficiency Clean 1n and 2n efficiency is the number of clusters which fit to drdt gate, in case the emitted neutron multiplicity is one and two, respectively. 1n -> 2n misinterpretation probability is the probability to treat 1n events as 2n. It means that is the ratio of the number of clusters which do not fit to the drdt gateto the total number of neutrons were shot.

  4. Definitions: The drdt gate Anexamplefor the drdt gate (Staircase geometry):

  5. Definitions: The neutron source: Neutron were shot in energies sampled from a 252Cf source. (see plot) Threshold: 50 keVee threshold has been considered for the light output

  6. Flat Zigzag

  7. Staircase 1π Staircase 2π

  8. Spherical N180 TheNeutron Wall

  9. Spherical 1π Spherical 2π

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