Description

Here I studied the radiation emitted from the Scattering Chamber and Scattering Chamber attachment for the PREX experiment with PREX2 configuration. Estimates of mitigation of the inpact of local shielding placement have been investigated, throught the weighting of the flux of the radiation with NIEL 1MeV equivalent damage in neutron courves.

Select Plot type (menu top left)

  1. Energy:
    1. Top left: Energy spectrum of the neutrons weighted by the NIEL 1MeV equivalent neutron damage on Silicon (estimate of how bad is the radiation)
    2. Top right: Neutron Flux in the bin weighted by the NIEL 1MeV equivalent neutron damage on Silicon
    3. Bottom left: In this part I wanted to compare the different fluxes from different areas, so it shows the integrated NIEL Energy spectrum in a certain bin divided by the area of the bin. Plots on total of this area and how much is important in the total flux can be found in the next table
    4. Bottom right: In this part I wanted to see how much important is a certain area to the total flux, so it has information on the "integrated NIEL energy spectrum of the bin", "the percentage of the total NIEL energy spectrum (both scattering chamber and scattering chamber attachment together in the total)", and "the total NIEL energy spectrum ". This is done as a function of shield thickness of polyethylene in step of 2cm increasing on the full design where I had flux. This stepping is done using my previous study of the effect of different shielding on a fixed neutron bin source ( Previous neutron beam study ) with interpolated data for getting estimate on different values of shielding thickness and neutron energy
  2. Vertex:
    1. 2d animation with the position of the creation of the neutron, animated with the momentum direction at the time of creation (if rescatters, you will not see it, but gives an idea)
    2. The neutron plotted refers to neutron that will hit the detector (scattering chamber or scattering chamber attachment) and will have direction outward the detector (this for avoid double counting)
    3. This is to see the source of neutrons and to give some hint on stopping the flux of rescattered neutron
  3. Direction:
    1. 2d animation with the position of the hit (passing) on the detector of the neutron, animated with the momentum direction at the time of hit
    2. The neutron plotted refers to neutron that will hit the detector (scattering chamber or scattering chamber attachment) and will have direction outward the detector (this for avoid double counting)
    3. This is for giving some hint on how to place the shielding
Surf through the different bins of the Scattering chamber or Scattering chamber attachment

NIEL for No Shield
NIEL with different Shield thicknesses