Final(?) Design of G0 Upstream Shielding

Larry BartoszekBARTOSZEK ENGINEERING

10/22/05

Summary

• I think I have incorporated all the features

• Possible exceptions:– Additional holes for the threaded rods that

support the protective covers for the windows– What kind of polyethylene? (UHMW?)– Something I don’t know about

Top octant of US shielding, no CEDs or Rohacell box

Closer view with near head rib turned off to increase visibility

Simplified Rohacell box shown

View looking downstream using full as-built CAD model

Looks to me like there won’t be a problem with the threaded rods interfering with the detectors

Top view with beam going up

Beam

Upstream head

Side elevation view with near ribs on the head turned off to expose the shielding

Detectors have not been moved back here, so there is a small interference between top layer of poly and Rohacell box.

Exploded view of upstream shielding

1/16” Lead

¼” Aluminum

¼” Polyethylene

Conclusion

• Please give me your comments with any changes so I can get manufacturing drawings made and we can put this thing to bed (so to speak).