The superconducting magnets of the Tokamak Ignition/Burn Experimental Reactor (TIBER II) will generate high magnetic fields over large bores. The resulting electromagnetic forces require the use of large volumes of distributed steel and thick magnet case for structural support. Here we review the design allowables, calculated loads and forces, and structural materials selection for TIBER II. 7 refs., 2 figs., 3 tabs.

Recent measurements by TASSO of the lifetimes of charmed mesons is reviewed. The lifetime reported for the D/sub s/ meson utilizes the entire data sample collected. The lifetime of the neutral charmed meson, D/sup o/, is from a subsample of the total data set. Special emphases is given to the experimental procedures used.

The Alcator-C machine to be installed in the MTX facility will be housed in a one-foot-thick shield wall at Lawrence Livermore National Laboratory (LLNL). This facility differs from the housing at the Massachusetts Institute of Technology (MIT) in that the expected radiation levels are estimated to be higher because the free electron laser (FEL) will heat the plasma. The shield walls that surround the experiment will have a large amount of rebar and metal structure that will be isolated to various degrees to maintain grounding isolation, minimize grounding loops, and minimize currents that could disrupt diagnostic abilities, cause personnel hazards, or affect plasma location. The walls are also designed to LLNL earthquake standards. Construction started in June and was completed by late July. Details of the design criteria for radiation, earthquake, and electrical isolation, along with the design, construction, and related issues will be presented in the paper. 4 refs., 8 figs.