This document analyzes data on the lifetime of the 201-MHz triode power amplifier (PA) vacuum tube, model number 7835, used in the low-energy half of the Linac. We observe that a 7835 power amplifier vacuum tube has historically provided about one and one-third years service in the Linac. The lifetime of recently re-manufactured tubes is somewhat less, but it is not clear if this is because the manufacturer is ''loosing their touch,'' or because tubes cannot be effectively rebuilt after a certain number of times. Taking into account the expected tube lifetimes, the statistical fluctuations on this number, and the amount of time it takes for the manufacturer to make good tubes, we require about 14 tubes either operating, ready as good spares or being manufactured, in order to have sufficient spares to run the Linac. As a hedge against supplier drop out, we need to increase our inventory of good spare tubes by about three tubes per year for the next few years.

The Defense Waste Processing Facility (DWPF) is currently processing Sludge Batch 2 (SB2) and plans to initiate processing of SB3 in the spring of 2004. In addition, the Savannah River High Level Waste Division proposes to transfer existing excess Pu and Am/Cm materials through the Liquid Radioactive Waste Handling Facility directly to the Extended Sludge Process Facility. Current blending strategies have both the Pu and Am/Cm materials being vitrified within SB3 in the DWPF.

Predictions of increasing levels of anthropogenic carbon dioxide (CO{sub 2}) and the specter of global warming have intensified research efforts to identify ways to sequester carbon. A number of novel avenues of research are being considered, including bioprocessing methods to promote and accelerate biosequestration of CO{sub 2} from the environment through the growth of organisms such as coccolithophorids, which are capable of sequestering CO{sub 2} relatively permanently. Calcium and magnesium carbonates are currently the only proven, long-term storage reservoirs for carbon. Whereas organic carbon is readily oxidized and releases CO{sub 2} through microbial decomposition on land and in the sea, carbonates can sequester carbon over geologic time scales. This proposal investigates the use of coccolithophorids--single-celled, marine algae that are the major global producers of calcium carbonate--to sequester CO{sub 2} emissions from power plants. Cultivation of coccolithophorids for calcium carbonate (CaCO{sub 3}) precipitation is environmentally benign and results in a stable product with potential commercial value. Because this method of carbon sequestration does not impact natural ecosystem dynamics, it avoids controversial issues of public acceptability and legality associated with other options such as direct injection of CO{sub 2} into the sea and ocean fertilization. Consequently, cultivation of coccolithophorids could be carried …

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During the second session of the 107th Congress, the House and Senate will consider many different budgetary measures. Most of these measures will pertain to FY2003 (which will begin on October 1, 2002) and beyond, but some may make adjustments to the budget for FY2002. As the congressional session progresses, this issue brief will describe House and Senate action on major budgetary legislation within the framework of the congressional budget process and other procedural requirements.

For the interpretation of correlation reflectometry data a fast two-dimensional full wave code has been developed in which realistic plasma geometries are used. Results of this code are compared with experiments and turbulence correlation lengths and fluctuation levels are extracted with statistical optics methods. It is shown that in general the measured reflectometer correlation length is not equal to the turbulence correlation length. The code is also used to study the possibility of O-X correlation reflectometry in FIRE for the determination of the local magnetic field strength. It was found that this is only possible at very low fluctuation levels.

Testimony issued by the General Accounting Office with an abstract that begins "On June 18, the President transmitted draft legislation to Congress for the creation of a Department of Homeland Security to prevent terrorist attacks within the United States, reduce America's vulnerability to terrorism, and minimize the damage and recovery from attacks that do occur. As proposed, functions of the Homeland Security Department's Information Analysis and Infrastructure Protection Division would include (1) receiving and analyzing law enforcement information, intelligence, and other information to detect and identify potential threats; (2) assessing the vulnerabilities of the key resources and critical infrastructures; (3) developing a comprehensive national plan for securing these resources and infrastructures; and (4) taking necessary measures to protect these resources and infrastructures, in coordination with other executive agencies, state and local governments, and the private sector. To create this division, six federal organizations that currently play a pivotal role in the protection of national critical infrastructures would be transferred to the new department. Potential benefits for this division include more efficient, effective, and coordinated programs; better control of funding through a single appropriation for the new department and through establishing budget priorities for transferred functions based on their homeland security …

Analytical data and plant solution compositions are often reported in molarity units. Densities of salt solutions are needed to convert the concentrations to molal basis in order to utilize physical property data that have been established on a molal basis, for example, solution reaction equilibrium constants or activity coefficients. We report here the densities at 20.0 Degrees C of sodium tetrafluoroborate (NaBF4) solutions from 0.05 molal to 9.0 molal, near saturation of 9.2 molal.

The mission for the proposed FIRE (Fusion Ignition Research Experiment) device is to ''attain, explore, understand and optimize fusion-dominated plasmas.'' Operation at Q * 5, for 20 sec with a fusion power output of *150 MW is the major goal. Attaining this mission sets demands for plasma measurement that are at least as comprehensive as on present tokamaks, with the additional capabilities needed for control of the plasma and for understanding the effects of the alpha-particles. Because of the planned operation in advanced tokamak scenarios, with steep transport barriers, the diagnostic instrumentation must be able to provide fine spatial and temporal resolution. It must also be able to withstand the impact of the intense neutron and gamma irradiation. There are practical engineering issues of minimizing radiation streaming while providing essential diagnostic access to the plasma. Many components will operate close to the first wall, e.g. ceramics and mineral insulated cable for magnetic diagnostics and mirrors for optical diagnostics; these components must be selected and mounted so that they will operate and survive in fluxes which require special material selection. The measurement requirements have been assessed so that the diagnostics for the FIRE device can be defined. Clearly a better set …

Background electrons are ubiquitous in high-intensity particle accelerators. Under certain operating conditions, amplification of the electron cloud can occur. The beam-cloud interaction can seriously degrade the accelerator performance with effects that range from vacuum degradation to collective beam instabilities. Although electron cloud effects (ECEs) were first observed 20 years ago in a proton ring, in recent years, they have been widely observed and intensely studied in e{sup +}/e{sup -} rings. This paper will focus on describing electron cloud diagnostics, which have led to an enhanced understanding of ECEs, especially details of beam-induced multipacting and saturation of the cloud. Such experimental results can be used to provide realistic limits on key input parameters for modeling efforts.

The feasibility of using of a novel multi-pass absorption technique in combination with a shock tube for sensitive monitoring of free radicals for high-temperature kinetic studies was evaluated. The method was applied to study several elementary reactions of hydroxyl (OH) and methyl (CH{sub 3}) radicals.

This paper presents the characterization of potential feed for processing relatively low radioactive waste tanks. The feed characterization is based on waste characterization data extracted from the waste characterization system. This data is compared to salt cake sample results from Tanks 37, 38 and 41.

This report presents the information related to the fishery, aquaculture, and marine mammal legislation enacted by the 107th congress

The heterogeneity of hydrogeologic properties at different scales may have different effects on flow and transport processes in a subsurface system. A model for the unsaturated zone of Yucca Mountain, Nevada, is developed to represent complex heterogeneity at two different scales: (1) layer scale corresponding to geologic layering and (2) local scale. The layer-scale hydrogeologic properties are obtained using inverse modeling, based on the available measurements collected from the Yucca Mountain site. Calibration results show a significant lateral and vertical variability in matrix and fracture properties. Hydrogeologic property distributions in a two-dimensional, vertical cross section of the site are generated by combining the average layer-scale matrix and fracture properties with local-scale perturbations generated using a stochastic simulation method. The unsaturated water flow and conservative (nonsorbing) tracer transport through the cross section are simulated for different sets of matrix and fracture property fields. Comparison of simulation results indicates that the local-scale heterogeneity of matrix and fracture properties has a considerable effect on unsaturated flow processes, leading to fast flow paths in fractures and the matrix. These paths shorten the travel time of a conservative tracer from the source (repository) horizon in the unsaturated zone to the water table for small fractions …

Correspondence issued by the General Accounting Office with an abstract that begins "Congress appropriated $205 million to the Forest Service for fiscal year 2001 to reduce hazardous accumulated fuels. In an effort to put as much of these appropriated monies on the ground as quickly as possible in fiscal year 2001, the Forest Service identified and funded those hazardous fuel reduction projects for which it had completed the necessary environmental analyses. As of July 2001, the Forest Service had completed the necessary environmental analyses to implement 1,671 hazardous fuel reduction projects in fiscal year 2001. Of those, 20 had been appealed, and none had been litigated. Appellants included environmental groups and individuals."

Report covering support to ensure transition todemocracy and free market economics in the states of the former Soviet Union (FSU), the United States, since December 1991, has offered roughly $8.2 billion in grants for economic and technical assistance to the region. Most of the grant assistance has been provided through the Agency for International Development (USAID).

Free space optical communications (FSO) are beginning to provide attractive alternatives to fiber-based solutions in many situations. Currently, a handful of companies provide fiberless alternatives specifically aimed at corporate intranet and sporting event video applications. These solutions are geared toward solving the ''last mile'' connectivity issues. There exists a potential need to extend this pathlength to distances much greater than a 1 km, particularly for government and military applications. For cases of long distance optical propagation, atmospheric turbulence will ultimately limit the maximum achievable data rate. In this paper, we propose a method to improve signal quality through the use of adaptive optics. In particular, we show work in progress toward a high-speed, small footprint Adaptive Optics system for horizontal and slant path laser communications. Such a system relies heavily on recent progress in Micro-Electro-Mechanical Systems (MEMS) deformable mirrors, as well as improved communication and computational components.

D-atom atomic resonance absorption spectrometric (ARAS) detection has been used to study the thermal decomposition of C{sub 2}D{sub 5}I to give C{sub 2}D{sub 5}-radicals in {approx}70% yield (924-1370 K). C{sub 2}D{sub 5} then decomposes to give C{sub 2}D{sub 4} + D effectively instantaneously on the time scale of the bimolecular kinetics experiments. The concurrent thermal decompositions of both C{sub 2}D{sub 5}I and CH{sub 3}I can then be used to prepare well-defined initial concentrations of both D-atoms and CH{sub 3}-radicals. Experiments were performed by observing absolute [D] depletion and [H] formation. The results were initially modeled with a 33 step mechanism; however, because of the high sensitivity for H- and/or D-detection, the mechanism could be reduced to four reactions, all of which are known except the exchange reaction, D + CH{sub 3} {yields} CH{sub 2}D + H. The rate constants were found to be temperature independent with k = (2.20 {+-} 0.22) x 10{sup -10} cm{sup 3} molecule{sup -1} s{sup -1} for 1294 {le} T {le} 1753 K. The present data have been combined with earlier lower temperature determinations, and the resultant database has been compared with unimolecular rate theory results. From theory, k = kk{sub {infinity}}<k{sub f{var_epsilon}}/(k{sub f{var_epsilon}} + k{sub …

Testimony issued by the General Accounting Office with an abstract that begins "Title III of the proposed Homeland Security Act of 2002 would transfer responsibility for certain chemical, biological, radiological, and nuclear research and development programs and activities to the new department. The proposed Department of Homeland Security would develop national policy for, and coordination of, the federal government's civilian research and development efforts to counter chemical, biological, radiological, and nuclear threats. Although the new department could improve coordination of existing research and development programs, the proposed transfer of control and priority setting for research from the organizations where the research would be conducted could be disruptive. Transferring control over these programs, including priority setting, to the new department has the potential to disrupt some programs that are critical to basic public health. The President's proposal is not clear on how both the homeland security and the biomedical research objectives would be accomplished. However, if an agency's mission fits with homeland security, its transfer to the new department is appropriate."

Testimony issued by the General Accounting Office with an abstract that begins "Title III of the proposed Department of Homeland Security legislation would task the new department with developing national policy and coordinating the federal government's research and development efforts for responding to chemical, biological, radiological, and nuclear threats. It would also transfer to the new department responsibility for certain research and development programs and other activities, including those of the Department of Energy (DOE). If properly implemented, this proposed legislation could lead to a more efficient, effective and coordinated research effort that would provide technology to protect our people, borders, and critical infrastructure. However, the proposed legislation does not specify that a critical role of the new department will be to establish collaborative relationships with programs at all levels of government and to develop a strategic plan for research and development to implement the national policy it is charged with developing. In addition, the proposed legislation is not clear on the role of the new department in setting standards for the performance and interoperability of new technologies so that users can be confident that the technologies they are purchasing will perform as intended. Some of the proposed transfers of …

Testimony issued by the General Accounting Office with an abstract that begins "This testimony discusses federal agency processes for approval of state information technology (IT) projects supporting state-administered federal human services programs. Federal approval and funding processes for state IT development and acquisition projects for the Child Support Enforcement, Child Welfare, and Food Stamps programs require the establishment of federal funding participation rates, the documentation that states must submit, and the time frames in which the federal agency must respond to the request. Assessment of the federal approval and funding process requires complete and reliable data that track a request from agency receipt until the agency finally approves or disapproves the request. However, such information is not readily available and the process cannot be thoroughly assessed because (1) the system used by the Administration for Children and Families (ACF) and The Centers for Medicare and Medicaid Services (CMS) headquarters to manage the approval process does not track the life cycle of a request and (2) the Department of Agriculture's Food and Nutrition Services (FNS) and CMS regional offices do not have a central tracking system. However, in a vast majority of cases, agencies responded to states' IT planning and acquisition …

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This report discusses the context of India - U.S relations, and its bilateral issues.