1 / 9

Accident scenarios on a quad in MTA beam line

Accident scenarios on a quad in MTA beam line. Igor Rakhno April 20, 2007. The scenarios. Beam hits the beam pipe center inside the quad – model 1 Beam hits the quad pole – model 2 The quad is ~ 17 m upstream of the concrete shield block Vertical angle = 50 mrad 400 MeV protons

rue
Télécharger la présentation

Accident scenarios on a quad in MTA beam line

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. Accident scenarios on a quadin MTA beam line Igor Rakhno April 20, 2007

  2. The scenarios • Beam hits the beam pipe center inside the quad – model 1 • Beam hits the quad pole – model 2 • The quad is ~ 17 m upstream of the concrete shield block • Vertical angle = 50 mrad • 400 MeV protons • Normalization does not matter because we are looking for a relative behavior. Here it is 2×1014 p/s.

  3. Calculated distributions atop the berm are poor. • More or less reliable data were obtained for a 1-ft layer inside the berm, 5.3 ft above the concrete ceiling. In other words, vertical distance between the layer and the beamline is 405 cm. • Atop the berm mostly low-energy neutrons and gammas exist, almost no stars.

  4. Plan view of the Linac – MTA area

  5. Linac – MTA area: fragment with a quad

  6. Quad cross section

  7. Star density inside soil, 5.3 ft above the concrete ceilingModel 1Model 2

  8. Neutron flux inside soil, 5.3 ft above the concrete ceilingModel 1Model 2

  9. Star density and neutron fluxvs distance from the quad

More Related