Those requirements are within the capabilities of the tagger and collimation system that we have in our current design for the Hall D photon beam. I have carried out a more complete simulation of the photon beam spot at the position of the gluex target than what Liping did. You can compare the two plots (x and y projections of the beam spot profile) below with Liping's profiles. They look similar to me.
http://zeus.phys.uconn.edu/halld/primex/beam-12-2008/xtarg_beam.gif
http://zeus.phys.uconn.edu/halld/primex/beam-12-2008/ytarg_beam.gif
-Richard J.
Gan, Liping wrote:
621A1D0B68C2594C80895862954FBB6B0E752A6A@UNCWMAILVS1.dcs.uncw.edu">Dear Richard,According our discussion at the meeting, here is updated beam requirement for PrimEx experiment.Best regards,Liping
