1 / 38

Interaction Length

Interaction Length. A. Murakami. L = 38.83 (interaction length of proton in carbon by PDG) change of constant : means uncertainty of L (change 0.8, 0.9, 1.0, 1.1, 1.2) Flux is normalized at peak flux. Normalized Flux @SK. Flux × 30 for looking at the tail .

odelia
Download Presentation

Interaction Length

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. Interaction Length A. Murakami

  2. L = 38.83 (interaction length of proton in carbon by PDG) • change of constant : means uncertainty of L (change 0.8, 0.9, 1.0, 1.1, 1.2) • Flux is normalized at peak flux.

  3. Normalized Flux @SK Flux × 30 for looking at the tail There seems to be no difference... Flux × 15 for looking at the tail

  4. Ratio of Normalized Flux @SK constant = 1.1, 1.2 vs 1.0 zoom to 0~2 GeV Diff. less than 3% Diff. less than 5%

  5. Ratio of Normalized Flux @SK constant = 0.9, 0.8 vs 1.0 zoom around 0~2 GeV Diff. less than 3% Diff. more than 5%

  6. Ratio of Normalized Flux @ND5 constant = 1.2, 1.1 vs 1.0 zoom around 0~2 GeV Diff. less than 2% Diff. less than 3%

  7. Ratio of Normalized Flux @ND5 constant = 0.9, 0.8 vs 1.0 zoom around 0~2 GeV Diff. less than 2% Diff. less than 5%

  8. Far / Near constant=1.0, 1.1, 1.2 zoom around 0~2 GeV There seems to be no difference...

  9. Far / Near constant=1.0, 0.9, 0.8 zoom around 0~2 GeV There seems to be no difference...

  10. Comparison of Far/Near constant=1.0, 1.1, 1.2 zoom around 0~2 GeV Diff less than 2% Diff less than 3%

  11. Comparison of Far/Near constant=1.0, 0.9, 0.8 zoom around 0~2 GeV Diff less than 2% Diff less than 4%

  12. Out-target/In-target comparison Murakami Confirmation of Nicolas’s study

  13. Zoom

  14. Zoom

  15. Zoom

  16. Zoom Diff between “out” and “total”< 6%

  17. Primary beam profile A. Murakami

  18. Black : nominal beam profile Blue : Flat beam Red : pencil beam Y-Scale × 40

  19. ZOOM 20

  20. ZOOM 21

  21. ZOOM 22

  22. ZOOM 23

  23. Z binning studybinning target exit z position A. Murakami

  24. Normal use for model comparison 30GeV proton In jnubeam Vector information Simple simulation by either geant3, mars, fluka, geant4 …… Target is just a 90cm, 2.6cm-diameter rod. Vector information of particles just exit the target is output. Generate and trace the track inputted. This study 30GeV proton In jnubeam Vector information ‘one bin’ case Simple simulation by geant3 Target is just a 90cm, 2.6cm-diameter rod. Vector information of particles just exit the target is output. But ‘z’ value is modified to simulate the binning condition. Generate and trace the track input. 25

  25. 27

  26. 28

  27. ZOOM 29

  28. ZOOM 30

  29. Secondary interaction in Horn Aluminum A. Murakami

  30. Red: remove horn aluminum Black : nominal Super-K ND off-axis

  31. 33

  32. 34

  33. 35

  34. 36

  35. Upper number: 0.4<En<1.2GeV region Lower number : En<10GeV Primary interaction Secondary Interaction

  36. Upper number: 0.4<En<1.2GeV region Lower number : En<10GeV Cont’d Primary Beam Horn

More Related