Real Photon Collaboration Engineering Meeting 1/29/02 Minutes Attendees: W. Olson, T. Weber, J. Weisend, M. Palrang, P. Bosted, R. Arnold, L. Keller, K. Baird, R. Erickson Items Discussed: 1. A designer (E. Jensen) is starting to do layout work on the photon beamline. Another designer (C. Wilder) is finishing up the E168 beamline documentation and will then start to layout the E160 beam line. 2. P. Bosted has worked out a photon beamline commissioning plan and has looked at its potential impact on E158. 3. There was discussion about the possibility of putting a pincushion monitor in the E158 scattering chamber for the photon beamline commissioning. This was viewed as straightforward to do. New Action Items 1. T. Weber will investigate other E160 target materials to replace the Pb and Au for example Tantalum or Platinum Ongoing Action Items 1. J. Weisend will work with D. Crabb and R. Principe to develop a detailed drawing showing the dilution refrigerator and the proposed superconducting magnet. 2. Number of cables required from the counting house to ESA. G. Oxoby will start tabulating these cables based on the data acquisition memo and additional information from the collaboration. 3. P. Bosted will continue the physics simulations of the proposed change to the RPC design. 4. . The interaction of the LASS magnet and all its iron with the E161/ E159 7 T target magnet needs to be carefully modeled using a 3-D field simulation. 5. Serious engineering of the shielding and earthquake supports associated with the LASS magnet must be started. J. Weisend