[en] The Control/Monitor system, built by the Kirtland Operation of EG and G's Energy Measurements Group for Sandia Laboratories' Particle Beam Fusion Accelerator, will use a distributed-microprocessor system interfaced to a minicomputer. The major purpose for the microprocessors and minicomputers is to organize the operation of the accelerator into systematic, preplanned sequences that will maximize the scientific output of the facility

[en] Short beam usage times were encountered using a 60 keV electron beam welder. These short times were the direct result of a buildup of a reaction product (WO₂.₉₀) that occurred on graphite washers which housed the tungsten emitter plate. While it was not possible to prevent the reaction product, its growth rate was sufficiently altered by changing graphite materials and minor design changes of the washers. With these modifications beam usage times increased from an original 40 min to approximately 675 min

[en] The program described in this report studies the suitability of electrodialysis-ion exchange (EDIX) to treat aqueous streams containing heavy metals and radioactive cations in a solution containing sodium and nitrates. The goal of the program was to produce a cation stream containing sodium, heavy metals, and radioactive cations; an anion stream of nitric acid free of heavy metals and radioactive cations; and a product stream that meets discharge criteria. The experimental results, described in detail, indicated that EDIX was not a suitable process for treating wastes containing metals that formed insoluble hydroxides in a basic solution; the metals precipitate in the catholyte and feed compartments, and in the cathode membrane. The test program was therefore terminated prior to completion of all planned activities. 2 refs., 22 figs., 8 tabs

[en] High power pulse electron beam generators are now in service for preliminary experiments on high aspect ratio lasers. A review is given of the performance of the existing POCOBEAM low impedance, first risetime, short pulse generators. These existing designs are considered in relation to future requirements for multicavity systems with multi-machine excitation of each cavity, and projected performance improvements are discussed

[en] The project described is a part of a FRAD program and focuses on a specific area of the required refabrication process technology. The objective of the present project is to perform a preliminary design study of rod and bundle assembly and inspection of ThO₂-UO₂ Mixed Oxide (ThoMOX) fuels that are mainly gamma emitting. Fully remote operation is assumed due to the high level of radioactivity. The present preliminary design study specifies a 17 x 17 fuel assembly for a reference design basis. However, the final system will have generic capabilities so that with limited modifications, various other fuel bundle arrays will be able to be assembled

No abstract available

[en] This chapter describes the design of the pulse power system used to generate the electron beam for the Austin Research Associates Collective Ion Accelerator. Discusses the methods used to filter out high-frequency ripple generated in the Marx generator and switches of a 3 MeV electron beam generator with an output pulse having a 200 ns flat top. Finds that a very low output pulse ripple of less than 0.5% of the peak amplitude can be obtained through the application of conventional filter theory to a distributed, transmission-line structure. Computer analysis of this type of system indicates that short line sections with an impedance significantly lower than the nominal line impedance of the pulseline could be effectively used to replace the capacitance of a simple LC low-pass filter. The filter circuit is combined with impedance mismatching and an LR integration at the Marx/transfer line connection to achieve an overall attenuation that meets system requirements