Real Photon Collaboration Engineering Meeting 12/4/01 Minutes Attendees: W. Olson, T. Weber, J. Weisend Items Discussed: 1. M. Palrang is constructing a Solid Edge model of the LASS dipole. When complete, this will be included into the E160 Beam line layout which will be sent to LBNL for a detailed magnet field analysis early in 2002. New Action Items 1. More details are required on the precision of the E160 target motion and the nature of the absorber that is required in the downstream half of D3. Ongoing Action Items . 1. Steve St Lorent will work on the steel for the LASS configuration. 2. J. Weisend will work with D. Crabb and R. Principe to develop a detailed drawing showing the dilution refrigerator and the proposed superconducting magnet 3. Number of cables required from the counting house to ESA. G. Oxoby will start tabulating these numbers based on the data acquisition memo and additional information from the collaboration. 4. P. Bosted will continue the physics simulations of the proposed change to the RPC design. 5. L. Keller will look at the muon backgrounds in the detector with the new RPC experiment design. 6. 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. 7. Serious engineering of the shielding and earthquake supports associated with the LASS magnet must be started. J. Weisend 2