1 / 10

Neutron spectrum as input to simulations

Neutron spectrum as input to simulations. n_TOF experimental-like neutron spectrum entering the EAR1 at 182.5 m from spallation target. Geometry and settings. MGAS position, 2.5 mm Al equivalent. + Al floor has been introduced, 2 mm thick. n beam. U8 sample, 6.6 mm thick.

jameson-dickerson
Download Presentation

Neutron spectrum as input to simulations

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Neutron spectrum as input to simulations n_TOF experimental-like neutron spectrum entering the EAR1 at 182.5 m from spallation target MC/CW/AT - MGAS sensitivity

  2. Geometry and settings MGAS position, 2.5 mm Al equivalent + Al floor has been introduced, 2 mm thick n beam U8 sample, 6.6 mm thick BaF2 equivalent, 15 cm + 2 cm Al external thickness Neutron starting point @182.5 m C6D6 liquid volume equivalent MC/CW/AT - MGAS sensitivity

  3. Settings • Neutron distribution sampled with a Gaussian shape, 1.9 cm diameter at the entrance of the EAR1 • In order to avoid capture-generated gammas from the U8 sample, production and transport threshold in U8 has been increased >1 GeV (effectively no g produced in the U8 sample) • For all the rest, transport threshold are set at 100 keV • 3 cases considered: • U8 and MGAS-equivalent in place (U8 yes, MGAS yes) • U8 in place (no MGAS-equivalent) (U8 yes, MGAS no) • No U8 in place with MGAS-equivalent in place (U8 no, MGAS yes) • To check the effect of the U8 presence in the beam line MC/CW/AT - MGAS sensitivity

  4. Photon distribution (case 1) Distribution integrated over ±10 cm wrt beamline g generated by the scattering of neutrons on the U8 sample g generated by the neutrons impinging on the MGAS-equivalent Al (in beam) MC/CW/AT - MGAS sensitivity

  5. Photon distribution (case 2) Distribution integrated over ±10 cm wrt beamline g generated by the scattering of neutrons on the U8 sample NO g generated by the neutrons impinging on the MGAS-equivalent Al MC/CW/AT - MGAS sensitivity

  6. Photon distribution (case 3) Distribution integrated over ±10 cm wrt beamline ONLY g generated by the neutrons impinging on the MGAS-equivalent Al MC/CW/AT - MGAS sensitivity

  7. Photon spectrum for the 3 cases (C6D6 #1) 10x! MC/CW/AT - MGAS sensitivity

  8. Photon spectrum for the 3 cases (C6D6#2) 10x! MC/CW/AT - MGAS sensitivity

  9. Photon spectrum for the 3 cases (C6D6 #1) – linear scale enhanced With and without MGAS: effect is max ~5 % 2.2 MeV g MC/CW/AT - MGAS sensitivity

  10. Neutron spectra for C6D6 #1 MC/CW/AT - MGAS sensitivity

More Related