[en] The Area numbers were allocated by A.C.E. (Automatic Control Engineering Ltd.) the main instrumentation contractor, who was awarded the contract in March, 1961 following tender action which was limited to U.K. Firms only, since it was considered that the degree of co-operation between Dragon Project and contractor ruled out Continental firms. The contract was for detailed design, manufacture, installation, testing and commissioning. Leak Detection and Gas Sampling and Analysis were negotiated as a separate contract with A.C.E., subject however to similar contract conditions. One of the contract conditions was that all instruments to be used were to be subject to Europe wide tender. This was carried out and the following orders were placed with European Firms.

[en] A summary is presented of a workshop held on the subject of solvent extraction equipment. The participants had considerable experience in the use of solvent extraction contactors in reprocessing plants. Among the topics discussed were contactor types, solids handling, feed clarification, solvent damage and washing, development work for plant operation, instrumentation and comparisons among contactor types. Recommendations were also made for additional research and development

[en] A chaotic system is modeled under typical experimental conditions and the effect on the correlation dimension is examined. Numerical data from the Lorenz attractor are used in which one of the parameters is varied in time, representing a non-equilibrium condition. The Lorenz time series is also filtered using a digital low-pass filter algorithm. An increase in the dimension is seen for a sinusoidal variation dependent on the amplitude of the perturbation. A linear variation yields no consistent results. Moderate filtering leads to a slight increase in dimension, with the occasional emergence of a spurious second plateau. Stronger filtering suppresses both plateaus, and no dimension can be assigned. The implications of the results on experimental data analysis are discussed. 12 refs., 9 figs., 5 tabs

[en] During the Preliminary Design phase of the Hanford Waste Vitrification Plant (HWVP), a study was conducted to develop concepts for routing embedded piping and conduit between the remote cells and the service corridors of the Vitrification Building. Routings were developed for each of the major remote cells using the Ganged Embed Plate (GEP) concept developed during Advanced Conceptual Design phase of the project. Final routings are now being set as part of the Title II - Detailed Design. The embedded piping routing concepts presented provide for personnel safety, support ALARA, are technically feasible, cost effective, efficiently constructable, operable, maintainable, and consistent with space allocation requirements

[en] The case of a young woman who developed initial symptoms of an intracranial mass lesion 17 years after undergoing irradiation for a port-wine stain of the right fronto-temporal and periorbital scalp and face is reported. A right sphernoid wing meningioma was removed 6 years later. The possible relationship between the development of the meningioma and the previous radiotherapy is discussed

[en] Ion temperature measurements, time resolved to 10 μs, have been made in the Madison Symmetric Torus reversed-field pinch with a five channel charge exchange analyzer. The ion temperature, T_i ∼ 200 eV for I = 350 kA, increases by as much as 100% during discrete dynamo bursts in MST discharges. Magnetic field fluctuations in the range 0.5--5 MHz were also measured. Structure in the fluctuation frequency spectrum at the ion cyclotron frequency appears as the bursts terminate, suggesting that the mechanism of ion heating involves the dissipation of dynamo fluctuations at ion gyro-orbit scales

[en] A broadband heterodyne radiometer has been installed on Alcator C-Mod to measure second harmonic electron cyclotron emission at 234-306 GHz. The high-resolution diagnostic is now operational with 32 channels separated by <1 cm and a frequency response of 1 MHz, measuring T_e on the low field side, for typical machine operation at B_T=5.4 T. We describe the operation of the radiometer based on two novel second harmonic mixers appropriate for these high frequencies. We discuss the design and implementation of the optical system, heterodyne mixer and intermediate frequency sections. First results are presented along with the calibration of the diagnostic and comparison to other ECE diagnostics. Future plans for the diagnostic as a correlation radiometer for temperature fluctuation measurements are also discussed

[en] Core electron temperature fluctuations are measured in a tokamak plasma where some degree of time resolution is achieved. There is a strong correlation between the turbulence level and the phase of the sawtooth oscillation. A global linear relationship between the temperature fluctuation amplitude and the electron temperature gradient scale length is found. The enhancement in fluctuations at the sawtooth crash is correlated to a steepening of the electron temperature gradient created as the sawtooth heat pulse propagates outward

[en] Core electron temperature fluctuations are measured in a tokamak plasma where some degree of time resolution is achieved. There is a strong correlation between the turbulence level and the phase of the sawtooth oscillations. The enhancement in fluctuations at the sawtooth crash is correlated to a steepening of the electron temperature gradient created as the sawtooth heat pulse propagates outward. A global linear relationship between the temperature fluctuation amplitude and the electron temperature gradient scale length is found

[en] A university-scale concept exploration experiment is proposed to investigate the improved confinement properties of the quasi-toroidal stellarator. The experiment would investigate three issues germane to a larger proof-of-principle experiment: first, the improved neoclassical confinement through measurement of the ion temperature dependence on axisymmetry; second, the impact of internal currents on the stability of this configuration; and third, the effect of the reduced viscosity on plasma rotation and the formation of transport barriers