HINS Front End Plan View 54 concrete wall

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HINS: Front End Plan View 54” concrete wall 12” 54”x 54” concrete Front End

HINS: Front End Plan View 54” concrete wall 12” 54”x 54” concrete Front End Detail View 6 E 18 protons per hour 120” * 18” concentric cylinders: 18” OD 3/8” wall steel 1” OD 1/8” wall copper ½” steel flange both ends with 1” round hole 1/4” x 36” ‘tall” crack 7 -ft 15’ 7’ 6” “bad” target 1” id beam tube Loss Point 37. 5’ 10 Me. V 83’ 30 Me. V 54”x 54” concrete 12” concrete or 8” polyethylene or nothing HINS Meeting – June 30, 2009 54” concrete wall MARS Modeling of Beam Accident - N. V. Mokhov 1/4” x 36” “tall” crack

HINS: Front End Elevation View 3’ concrete 36” x 54” concrete See front-end detail

HINS: Front End Elevation View 3’ concrete 36” x 54” concrete See front-end detail Elevation View 6 E 18 protons per hour “bad” target 1” id beam tube Loss Point 37. 5’ 10 Me. V 83’ 30 Me. V 50. 6” concrete floor HINS Meeting – June 30, 2009 10’ 6” MARS Modeling of Beam Accident - N. V. Mokhov 15’

HINS: Beam Line Detail View (not to scale horizontally) 8” 120” 18” 416” (not

HINS: Beam Line Detail View (not to scale horizontally) 8” 120” 18” 416” (not to scale) 36 16”dia 3/8” steel discs w/1”hole evenly spaced 448” 1” id beam tube everywhere (not to scale) 4 48”dia 1/2” steel discs w/1”hole “bad” target 250” 12” Loss Point 37. 5’ 10 Me. V 83’ 30 Me. V 12” concrete or 8” polyethylene or nothing HINS Meeting – June 30, 2009 MARS Modeling of Beam Accident - N. V. Mokhov 36”

30 -Me. V Proton Beam Loss in 10 x 10 cm Copper 900 proton

30 -Me. V Proton Beam Loss in 10 x 10 cm Copper 900 proton tracks (black) and generated neutrons (green) and photons (gray) 0. 2 mm HINS Meeting – June 30, 2009 MARS Modeling of Beam Accident - N. V. Mokhov

MARS MODELING OF BEAM ACCIDENT AT HINS Five 23 -cm radius TE spherical “dosemeters”

MARS MODELING OF BEAM ACCIDENT AT HINS Five 23 -cm radius TE spherical “dosemeters” 12” Concrete at Entrance HINS Meeting – June 30, 2009 MARS Modeling of Beam Accident - N. V. Mokhov

MARS MODELING OF BEAM ACCIDENT AT HINS 12” Concrete at Entrance HINS Meeting –

MARS MODELING OF BEAM ACCIDENT AT HINS 12” Concrete at Entrance HINS Meeting – June 30, 2009 MARS Modeling of Beam Accident - N. V. Mokhov

12” BORATED POLY INSERTS AT ENTRANCE HINS Meeting – June 30, 2009 MARS Modeling

12” BORATED POLY INSERTS AT ENTRANCE HINS Meeting – June 30, 2009 MARS Modeling of Beam Accident - N. V. Mokhov

Neutron/Photon Spectra Before and After BCH 2 Before HINS Meeting – June 30, 2009

Neutron/Photon Spectra Before and After BCH 2 Before HINS Meeting – June 30, 2009 After MARS Modeling of Beam Accident - N. V. Mokhov

12” BORATED POLY INSERTS AT ENTRANCE 2 -3 times dose reduction! HINS Meeting –

12” BORATED POLY INSERTS AT ENTRANCE 2 -3 times dose reduction! HINS Meeting – June 30, 2009 MARS Modeling of Beam Accident - N. V. Mokhov

DOSE ISOCONTOURS AROUND BEAM LOSS POINT HINS Meeting – June 30, 2009 MARS Modeling

DOSE ISOCONTOURS AROUND BEAM LOSS POINT HINS Meeting – June 30, 2009 MARS Modeling of Beam Accident - N. V. Mokhov

DOSE ISOCONTOURS AROUND BEAM LOSS POINT Much preferred block arrangement HINS Meeting – June

DOSE ISOCONTOURS AROUND BEAM LOSS POINT Much preferred block arrangement HINS Meeting – June 30, 2009 MARS Modeling of Beam Accident - N. V. Mokhov