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The main goal for the month of June was the characterization of neutral beam heated discharges with the beryllium limiter. The beam injection experiments were begun with 0.53 MW of beam power yielding a total of 0.7 MW with the ohmic power included. At this power level the maximum limiter load was 1.4 kW/cm/sup 2/, and the surface temperature rise was about 300/sup 0/C. In the next step the injected power was raised to 0.83 MW so that the total heating power was about 1 MW. The plasma parameters were I/sub p/ = 116 kA, anti n/sub e/ = 4.10/sup 13/ cm/sup -3/, and B/sub T/ = 1.4 T. The resulting maximum heat flux on the limiters was 2.2 kW/cm/sup 2/, and the corresponding surface temperature rise was 470/sup 0/C. These conditions came very close to the design load of 2.5 kW/cm/sup 2/. At this point the plasma behavior was extensively characterized and documented in terms of density and temperature profiles, impurity content, parameter space, and limiter loads. It was found that the global plasma behavior was very similar to the reference case with the TiC-coated graphite limiters. In both cases the impurity content was dominated by oxygen and carbon, …

Activities at the 88-Inch Cyclotron are discussed. Increased beam time demand and operation of the ECR source and cyclotron are reported. Experimental facility improvements are reported, including improvements to the High Energy Resolution Array and to the Recoil Atom Mass Analyzer, a new capture beamline, development of a low background counting facility. Other general improvements are reported that relate to the facility computer network and electronics pool. Approved heavy nuclei research is briefly highlighted. Also listed are the beams accelerated by the cyclotron. (LEW)

Four individual papers have been cataloged separately. (WRF)

This issue of the Computer Program Newsletter updates an earlier newsletter (Number 2, September 1979) and focuses on electrical network analysis computer programs. In particular, five network analysis programs (SCEPTRE, SPICE2, NET2, CALAHAN, and EMTP) will be described. The objective of this newsletter will be to provide a very brief description of the input syntax and semantics for each program, highlight their strong and weak points, illustrate how the programs are run at Lawrence Livermore National Laboratory using the Octopus computer network, and present examples of input for each of the programs to illustrate some of the features of each program. In a sense, this newsletter can be used as a quick reference guide to the programs.