The gigatron is a new rf amplifier tube designed for linac collider applications. Three design features permit extension of the lasertron concept to very high frequencies. First, a gated field-emitter array is employed for the modulated cathode. Second, a ribbon beam geometry mitigates space charge depression and facilitates efficient output coupling. Third, a traveling wave output coupler is used to obtain optimum coupling to the ribbon beam. This paper describes recent developments in the gigatron design, and progress towards experimental tests. 9 refs., 8 figs., 1 tab.

A promising design for a deuterium-tritium (DT) neutron source is based on the injection of neutral beams into a dense, warm plasma column. Its purpose is to test materials for possible use in fusion reactors. A series of designs have evolved, from a 4-T version to an 8-T version. Intense fluxes of 5--10 MW/m/sup 2/ is achieved at the plasma surface, sufficient to complete end-of-life tests in one to two years. In this report, we review data from earlier mirror experiments that are relevant to such neutron sources. Most of these data are from 2XIIB, which was the only facility to ever inject 5 MW of neutral beams into a single mirror call. The major physics issues for a beam-plasma neutron source are magnetohydrodynamic (MHD) equilibrium and stability, microstability, startup, cold-ion fueling of the midplane to allow two-component reactions, and operation in the Spitzer conduction regime, where the power is removed to the ends by an axial gradient in the electron temperature T/sub e/. We show in this report that the conditions required for a neutron source have now been demonstrated in experiments. 20 refs., 15 figs., 3 tabs.

We outline how ''topological confinement'' can be seen by the analysis of Regge limit infra-red divergences. We suggest that it is a necessary bridge between conventional confinement and the parton model at infinite momentum. It is produced by adding a chiral doublet of color sextet quarks to conventional QCD. An immediate signature of the resultant electroweak symmetry breaking would be large cross-sections for W/sup +/W/sup /minus// and Z/sup 0/Z/sup 0/ pairs at the CERN and Fermilab /bar p/p colliders. 24 refs.

This is the second of two lectures. In the first lecture the map from a cellular automaton to a sequence of analytical approximations called the local structure theory was described. In this lecture the inverse map from approximation to the class of cellular automata approximated is constructed. The key matter is formatting the local structure theory equations in terms of block probability estimates weighted by coefficients. The inverse mapping relies on this format. Each possible assignment of values to the coefficients defines a class of automata with related statistical properties. It is suggested that these coefficients serve to smoothly parameterize the space of cellular automata. By varying the values of the parameters a cellular automaton network may be designed so that it has a specified invariant measure. If an invariant measure is considered a ''memory'' of the network, then this variation of parameters to specify the invariant measure must be considered ''learning.'' It is important to note that in this view learning is not the storage of patterns in a network, but rather the tailoring of the dynamics of a network. 7 figs.

Batch experiments performed using {sup 14}C, Savannah River Plant (SRP) soil, and SRP burial ground groundwater indicate that the distribution coefficient, or K{sub d}, for {sup 14}C in the form of carbonates is typically 2 ml/g after 7 hours of equilibration and 55 ml/g after 72 hours. These results were obtained for samples containing {sup 14}C concentrations ranging from 4.2 nCi/ml up to 40.9 nCi/ml. For comparison the concentration of {sup 14}C in the sump leachate of the defense waste lysimeters 1 have ranged from 0.06 nCi/ml to 0.9 nCi/ml.

Letter opinion issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification.

Letter opinion issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification; Whether a particular contract between Texas Souther University and a local business firm violates either the state conflict of interest statute, article 6252-9b, V.T.C.S., or the nepotism statute, article 5996a, V.T.C.S.

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification; Whether a proposed rule of the Texas Department of Health to accept a rebate for infant formula from a designated "primary supplier" violates article XVI, section 25, of the Texas Constitution (RQ-1396)

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification; Whether hospital district taxes may be "rolled back" by election called pursuant to petition by taxpayers (RQ-1281)

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification: Qualification of civil service commissioners (RQ-1340)

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification; Whether a Justice of the Peace must collect a $75 fee at the time a defendant's fine is deferred under article 45.54 of the Texas Code of Criminal Procedure, and related questions (RQ-1387)

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification; Circumstances under which a State employee may be discharged(RQ-1418)

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification; Whether a municipality may utilize a portion of the hotel-motel tax for supplementing the operations budget for certain recreational facilities and related questions (RQ-1438)

There has been recent interest in the formulation of a nonperturbative theory of quantum electrodynamics (QED). In this report we critically discuss a recent theory of nonperturbative QED. We point out a difficulty with this theory and outline a theory which is free of this difficulty. Finally, computational schemes for implementing the theory are briefly discussed.

This is an internal DOE Geothermal Program planning and control document. Many of these reports were issued only in draft form. (DJE - 2005)

This is an internal DOE Geothermal Program planning and control document. Many of these reports were issued only in draft form.

Experiment E-782 has been approved to run during the next fixed target cycle in a fast-spill muon beam aimed at the Tohoku bubble chamber, located in Lab F. New construction is necessary to provide this beam. Initial feasibility tests were carried out during the last fixed target run, measuring both muon fluxes and background halo rates, as a function of several parameters. These test results are compared in detail with the predictions of the Monte Carlo program HALO, and can be used as a benchmark for design of the final beamline. 3 refs., 16 figs.

A toroidal vortex of liquid FLiBe (LiF + BeF/sub 2/) is suggested for the blanket of a fusion reactor. Because this reactor chamber has no solid first wall, it might avoid many of the problems that accompany conventional blanket design. The liquid blanket is sustained by nozzles that inject a continuous layer of cool liquid on the inner surface. A second set of nozzles sends a stream of droplets across the diverted scrape-off layer or edge plasma to carry its heat away. The feasibility issues of most importance are judged to be avoiding turbulent breakup of the vortex and preventing too much contamination of the plasma by the evaporating FliBe. 7 refs., 5 figs., 1 tabs.

We have developed, constructed and tested an anode readout TPC with high track separability which is suitable for large solid angle relativistic ion experiments. The readout via rows of short anode wires parallel to the beam has been found in tests to allow two-track separability of approx.2-3 mm. The efficiency of track reconstruction for events from a target, detected inside the MPS 5 KG magnet, is estimated to be >90% for events made by incident protons and pions. 15 GeV/c x A Si ion beams at a rate of approx.25 K per AGS pulse were permitted to course through the chamber and did not lead to any problems. When the gain was reduced to simulate the total output of a minimum ionizing particle, many Si ion tracks were also detected simultaneously with high efficiency. The resolution along the drift direction (parallel to the MPS magnetic field and perpendicular to the beam direction) was <1 mm and the resolution along the other direction /perpendicular/ to the beam direction was <1 mm also. 3 refs., 5 figs.

This paper discusses: ITER fueling issues; ITER pellet sizes, ablation and penetration; and ITER pellet injector requirements. 5 refs., 6 figs.

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.

In the end calorimeter of the D-zero experiment, uranium and stainless steel plates are assembled into modules which are to be installed into the cryostat as individual units. A single inner module will be surrounded by sixteen middle modules, which are surrounded by sixteen outer modules. The earlier design of the support structure of each middle hadronic module of the end calorimeter consisted of a stainless steel skin 'wrapped' around the plates. Recently, it became clear that a system of straps, instead of skin, offered several advantages. Specifically, high voltage and read-out cables could be attached after assembly, most signal wire ganging connectors could be accessible for maintenance, and there would be less resistance to convective flow of argon vapor during cool-down and warm-up. Unlike the stainless steel plates of the coarse section, uranium plates cannot be welded to the straps. A series of four configurations were designed, constructed, and tested. This report describes testing of the fourth design, which has been selected for construction. Drawings are included in appendix 1.

Nearly two decades ago signatures of deformation in the ground state bands of {sup 100}Zr and {sup 102}Zr were identified, and the rapid change in the deformation of heavy zirconium nuclei noted. It is now well accepted that the short-range proton-neutron interaction between the 1g{sub 9/2} and 1g{sub 7/2} spin-orbit partners plays an important role in producing ground state deformation in this region. Nevertheless, recent studies of zirconium nuclei, including those in the transition region, continue to refine our understanding of the interplay between single-particle and collective degrees of freedom. In this report we discuss some aspects of the level structures of {sup 96}Zr and {sup 98}Zr with emphasis on collective excitations. 18 refs., 2 tabs.