Description

Here Is is studied the inpact of using a Stainless Steel Scattering Chamber Attachment rather than an Aluminum version. The navigation on the sidebar menu has two different modes: mouse-over (the picture is highlighted on the side window); mouse-click (the picture is opened in a new window).

  1. The FLUX of particles on the scattering chamber attachment has been generated using the prex simulation with:
    1. PHYSICS LIST = QGSP_BERT_HP (See Flux plot from the menu on the left sidebar)and
    2. PrexII collimator as approved proposal
    3. No shielding in place
    4. Beam Energy of 1.05GeV
  2. The flux has been characterized, depending on:
    1. Particle id ($e^-,e^+,n,p,\gamma$)
    2. Place of intersection with the Scattering Chamber Attachment surface (each area has been devided in smaller 5cm x 5cm part.)
    3. Angle of intersection
    4. Energy Spectrum
    5. The left/right symmetry has been used in order to boost the statistic by a factor of two.
  3. The Energy spectrum has then been normalized to 1 and the normalization factor has been recorded in order to be able to reconstruct the luminosity.
  4. All these information have been imported into FLUKA, where each configuration will have:
    1. Incident particle type
    2. Probabily as a function of the energy
    3. Full integrated flux/second assuming a $70\mu A$ electron beam current. This will take into account the normalization factor calculated previousvly
    4. Location of entry underneath each surface analyzed, where average values have been assumed for the direction of entry and position of entry. The incoming beam is then spread in a 2cm x 2cm area. This has been done in order to avoid too hot spots, and to preserve an accurate reading at a close distance to the activated material, so that the measured dose will not be affected by the multi-area distribution of the irradiation.
    5. Irradiation profile of (7days irradiated - 4 days not - 7days irradiated - 4 days not - 7 days irradiated - 4 days not - 7days irradiated)
    6. Activation estimates have been calculated for 3 different times from the last stop of irradiation: 1day, 1week, 1month
    7. The collimator is not present in these studies
    8. The result is shown in the plots in the sidebar Menu "Scattering Chamber Attachment" and in the video below:
  5. A Comparison of the Activation with the same configuration has been done with the full configuration (collimator, scattering chamber, etc.). I just need to check the normalization for these plots. One cas see the result navigating on the sidebar Menu "Full design"

Animation

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