In this paper, a general overview of the MTX plasma diagnostics system is given. This includes a description of the MTX machine configuration and the overall facility layout. The data acquisition system and techniques for diagnostic signal transmission are also discussed. In addition, the diagnostic instruments planned for both an initial ohmic-heating set and a second FEL-heating set are described. The expected range of plasma parameters along with the planned plasma measurements will be reviewed. 7 refs., 5 figs.

There has been some feeling that a PEP upgrade might reduce the need for a 6-GeV synchrotron source. In this note we compare the two sources from a user viewpoint. Specifications for each are laid out and in conclusion, it appears that the PEP ring, at best, will be a useful source for carrying out 6-GeV R&D work (related to accelerator physics and beamline optics) rather than a replacement for a 6-GeV source.

The Space Station requires a high level of reliable electric power. The baseline approach is to utilize a hybrid system in which power is provided by photovoltaic arrays and by solar dynamic power conversion modules. The organic Rankine cycle (ORC) engine is one approach to solar dynamic conversion. The ORO provides the attributes of high efficiency at low temperature and compact simple designs utilizing conventional techniques and materials. The heat receiver is one area which must be addressed in applying the proven ORC to long life applications such as the Space Station. Heat pipes with integral thermal energy storage (TES) canisters and a toluene heater tube are the prime components of the heat receiver from the Phase B preliminary design. This contract is a task order type addressing the design, fabrication and testing of a full scale heat pipe. The contract was initiated on April 16, 1987. Sundstrand has specific responsibilities in each task. Los Alamos National Laboratory (LANL) in turn has the prime contract responsibility to NASA-LeRC.

It has been proposed (``Progress Report on Experiment Rationale for Validation of LLNL Models of Ground Water Behavior Near Nuclear Waste Canisters,`` Keller and Lowry, Dec. 7, 1988) that a heat generating spent fuel canister emplaced in unsaturated tuff, in a ventilated hole, will cause a net flux of water into the borehole during the heating cycle of the spent fuel. Accompanying this mass flux will be the formation of mineral deposits near the borehole wall as the water evaporates and leaves behind its dissolved solids. The net effect of this process upon the containment of radioactive wastes is a function of (1) where and how much solid material is deposited in the tuff matrix and cracks, and (2) the resultant effect on the medium flow characteristics. Experimental concepts described in this report are designed to quantify the magnitude and relative location of solid mineral deposit formation due to a heated and vented borehole environment. The most simple tests address matrix effects only; after the process is understood in the homogeneous matrix, fracture effects would be investigated. Three experiment concepts have been proposed. Each has unique advantages and allows investigation of specific aspects of the precipitate formation process. All could …

All projects listed in this report have been submitted for publication as journal articles or DOE reports. Projects include: McGlynn, S.P., Felps, W.S. and Scott, J.D., Molecular Rydberg Transitions. XVIII. Vibronic Doubling in Methyl Iodide; Findley, G.L. and McGlynn, S.P., The Generalized Genetic Code. A Modification of Code Universality; Findley, G.L. and McGlynn, S.P., Fundamental Spectroscopic Studies of Some Atmospheric Pollutants; McGlynn, S.P., Azumi, T. and Kumar, D., The Colors of Post-Transition-Metal Salts; Lewis, J.W., Nauman, R.V., Boulder, D.B., Jr. and McGlynn, S.P., Molecular Rydberg Transitions. XIX. Low-Energy Rydberg States of Azulene; Felps, W.S., Scott, J.D., and McGlynn, S.P., Molecular Rydberg Transitions. XX. Vibronic Doubling in Alkyl Bromides; Felps, W.S. and McGlynn, S.P., Molecular Rydberg Transitions. XXI. Intermediate Coupling in Simple Bromides; McGlynn, S.P. and Felps, W.S., Molecular Rydberg Transitions. XXII. The ..pi.. ..-->.. 4s Transition of ClCN; Chattopadhyay, S., McGlynn, S.P. and Findley, G.L., Photoelectron Spectroscopy of Phosphites, Phosphates and Substituted Phosphates; and Scott, John D., A Perturbed Linear Molecule Model for the Spectroscopy of Almost Linear Molecules. (PSB)

There has been a recent resurgence of interest in the use of algebraic variational methods for studying a variety of collision problems. Much of this interest stems from the discovery that spurious singularities, which plagued the traditional methods, can be eliminated when the variational principle is formulated with outgoing-wave boundary conditions. Another reason for the recent activity is the obvious suitability of these methods to present-day supercomputers. My purpose here is to describe an implementation of the complex Kohn method, an algebraic variational technique, for studying electron collisions with small molecules, both liner and non-linear, unlike variational principles based on the integral form of the Schroedinger equation (Lippmann-Schwinger equation), the method only requires Hamiltonian matrix elements. I will also show how the formalism allows one to develop a variational principle for computing first-order properties, such as bound-free dipole transition amplitudes. I will show results for the electron-impact dissociation of hydrogen as a function of initial vibrational quantum number. I will also illustrate the method for polyatomic molecules with results for elastic scattering of electrons by formaldehyde. 14 refs., 2 figs.

A data-driven subroutine package, written for our accelerator test stand (ATS), is described. This flexible package permits the rapid writing and modifying of data acquisition, control, and analysis programs for the many diverse experiments performed on the ATS. These structurally simple and easy to maintain routines help to control administratively the integrity of the ATS through the use of the database. Our operating experience indicates that the original design goals have been met. We describe the subroutines, database, and our experiences with this system.

In this report is examined the possibility of polarized proton in RHIC collider. The issues needed for the future study is also discussed. With the improved source and AGS booster, its is expected that the luminosity for polarized beam could be 0.4*10^32/cm^2/sec at energy of 250 Gev in RHIC. There we need 4 snakes and 4 spin rotators in the collider.

Analysis of gas from a heated air-filled canister containing a spent fuel assembly before and after rupture of a fuel rod shows that about 1.5 mCi of {sup 14}C from the external surface of the assembly was rapidly oxidized and released as {sup 14}CO{sub 2} in excess oxygen at 275{sup 0}C and 10{sup 4}/sup rad/h. After rupture, an additional 0.3 mCi was released, probably also from the external surface. The total {sup 14}C inventory in the entire 15 x 15 rod assembly including structural hardware is estimated to be 690 mCi. These measurements indicate that account will have to be taken of the time distribution of lifetimes of the canisters, and a broad definition of the "engineered system" may be necessary, in order to meet 10CFR60 requirements with spent fuel in a repository in tuff. 22 refs., 1 tab.

The results of a materials survey for the Baca 50 MW(e) single flash geothermal plant in the Valles Caldera of New Mexico are presented. From the design documents provided, materials proposed for use in contact with the plant atmosphere, the two-phase geofluid, the separated steam, and the recirculating condensate cooling water were assessed for suitability. Special emphasis was given to records of performance of the materials in other geothermal plants. Based upon these considerations of chemical reactivity and plant operating experience, a number of recommendations were made.