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    User name brads

    Log entry time 11:24:43 on March 09, 2012

    Entry number 365076

    keyword=Beamline <-> Target flange alignment snapshots

    Ed brought this to my attention after the target can rotation this morning. This gap is now covered by a He bag, but I got some photos before that was completed.

    Just from a visual inspection, it looks like there might be a pretty thin gap between the beam and the target entrance window flange. Note that there is a bit of a lip behind the target window, so the real inner-diameter of the target entrance flange is a bit smaller than what it appears from the outside.

    This isn't necessarily a problem -- but we should watch for evidence of scraping on the beam-left side of the target entrance flange.

    The two photos are top-down snapshots of where the upstream beamline exit window and target entrance flange in the current configuration.

    A copy of this log entry has been emailed to: jpchen,slifer,camsonne,doug,rom,brads

    Figure 1

    Figure 2