1 / 7

Neutrino Scattering In Geant4

Neutrino Scattering In Geant4. Geant4 Collaboration Meeting 27 September 2017 Dennis Wright (SLAC). Progress So Far. First step: Geant4-to-GENIE interface use Geant4 Bertini cascade to do final state interactions in nucleus after GENIE neutrino vertex is generated

adolfom
Télécharger la présentation

Neutrino Scattering In Geant4

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. Neutrino Scattering In Geant4 Geant4 Collaboration Meeting 27 September 2017 Dennis Wright (SLAC)

  2. Progress So Far • First step: Geant4-to-GENIE interface • use Geant4 Bertini cascade to do final state interactions in nucleus after GENIE neutrino vertex is generated • complete, committed to GENIE svn • validation underway • Early results: • no final state nuclear interaction model (red) • HAIntranuke (GENIE) final state interaction model • Bertini cascade (Geant4) final state model

  3. Neutrino Scattering: NCEL (black:Bertini, blue: GENIE)

  4. Neutrino Scattering: DIS (black:Bertini, Blue: GENIE)

  5. Next Steps • GENIE-to-Geant4 • use GENIE neutrino generators to initiate neutrino interactions in Geant4 • need wrapper code which calls GENIE to generate neutrino vertex and converts GENIE secondaries to Geant4 particle types • pass these secondaries to a Geant4 hadronic code to perform final state interactions within nucleus • will use Bertini to start, but could be others • will need to extract, build and maintain minimal GENIE libraries on Geant4 side • Dennis

  6. Next Steps • Geant4 neutrino classes • some native Geant4 neutrino cross section classes already exist (V. Grichine) • need elastic and inelastic processes • coherent elastic does not exist in GENIE • problem: no one-to-one correspondence between Geant4 neutrino processes and GENIE processes • elastic, quasi-elastic processes in GENIE refer to neutrino-nucleon collision and not neutrino-nuclear as in Geant4 • do we follow GENIE philosophy by treating neutrino reaction types separately (NCEL, CCQE, DIS, …) or lump these all together as one inelastic Geant4 process?

  7. Next Steps • Biasing • GENIE takes care of very small interaction cross sections by a detailed scan of the detector geometry • maximum neutrino cross section in that scan used to set sampling scale • interaction point in detector chosen based on scan • In Geant4 attempt to track neutrinos like any other particle  no initial scan of detector • therefore must do track biasing • can use recently added Geant4 biasing techniques to do this • events can then be run in natural Geant4 way 7

More Related