Dr Paul Schoessow, I received a copy of an email exchange between you and members of the Jefferson Lab Physics group regarding diamonds for nuclear physics experiments. I am a member of the GlueX experiment and am the principal designer of the coherent bremsstrahlung source where a thin diamond monocrystal will be used to generate a polarized beam of gamma rays from a 12 GeV electron beam. We are presently undertaking a R&D project using the X-ray diffraction beamline at the CHESS SRS source to study high-quality diamonds that we have obtrained from DeBeers. There are problems with these diamonds that we have not yet learned how to overcome, but their crystal quality is sufficient for our needs, with a mosaic spread across the entire surface of a 100mm^2 diamond on the order of 20 microradians. The problem is with making them thin enough, without significant mechanical distortion. They must be self-supporting in our current design, apart from a couple of thin wires attaching them to an outer frame. You can see more details in the various talks and papers listed on my web site http://zeus.phys.uconn.edu/halld. There was not very much information in the emails I saw, but it appears that your firm has some interest and expertise in diamond manufacturing and machining. If so, I would be very interested in discussing our requirements with you. Richard Jones Professor, University of Connecticut
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