Cooling rings for TeV colliders (open access)

Cooling rings for TeV colliders

Consideration is given to quantum fluctuations, intra beam scattering, cooling rates, and ring acceptance in order to see if one can obtain a normalized emittance of 10/sup -8/ in any plausible cooling ring. It is concluded that only a small gain is obtained by varying the partition functions, but a very significant gain is made by using higher bending fields. The ring is found to get bigger if the magnet apertures are increased. The ring diameter is found to increase if the momentum spread of the beam is reduced. It is shown that the power can be reduced by allowing a high beamstrahlung energy loss resulting in higher current in the cooling ring. Parameters are also given for a 10/sup -7/ m radian emittance case. (LEW)
Date: February 1, 1985
Creator: Palmer, Robert B.
Object Type: Article
System: The UNT Digital Library
Measured residual stresses in overlay pipe weldments removed from service (open access)

Measured residual stresses in overlay pipe weldments removed from service

Surface and throughwall residual stresses were measured on an elbow-to-pipe weldment that had been removed from the Hatch-2 reactor about a year after the application of a weld overlay. The results were compared with experimental measurements on three mock-up weldments and with finite-element calculations. The comparison shows that there are significant differences in the form and magnitude of the residual stress distributions. However, even after more than a year of service, the residual stresses over most of the inner surface of the actual plant weldment with an overlay were strongly compressive. 3 refs., 7 figs.
Date: February 1, 1985
Creator: Shack, W.J.
Object Type: Article
System: The UNT Digital Library
Thin-thick quadrature frequency conversion (open access)

Thin-thick quadrature frequency conversion

The quadrature conversion scheme is a method of generating the second harmonic. The scheme, which uses two crystals in series, has several advantages over single-crystal or other two crystal schemes. The most important is that it is capable of high conversion efficiency over a large dynamic range of drive intensity and detuning angle.
Date: February 7, 1985
Creator: Eimerl, D.
Object Type: Article
System: The UNT Digital Library
Development of an Effective Transport Media for Juvenile Spring Chinook Salmon to Mitigate Stress and Improve Smolt Survival During Columbia River Fish Hauling Operations, 1985 Final Report. (open access)

Development of an Effective Transport Media for Juvenile Spring Chinook Salmon to Mitigate Stress and Improve Smolt Survival During Columbia River Fish Hauling Operations, 1985 Final Report.

Selected transport media consisting of mineral salt additions (Na/sup +/, Cl/sup -/, Ca/sup + +/, PO/sub 4//sup -3/, HCO/sub 3//sup -/, and Mg/sup + +/), mineral salts plus tranquilizing concentrations of tricaine methane sulfonate (MS-222), or MS-222 alone were tested for their ability to mitigate stress and increase smolt survival during single and mixed species hauling of Columbia River spring chinook salmon (Oncorhynchus tshawytscha) and steelhead trout (Salmo gairdneri). Successful stress mitigation was afforded by several formulations as indicated by protection against life-threatening osmoregulatory and other physiological dysfunctions, and against immediate and delayed hauling mortality. Effects on the seawater survival and growth of smolts hauled in transport media were used as the overall criterion of success. Of the fourteen chemical formulations tested, 10 ppM MS-222 emerged as top-rated in terms of ability to mitigate physiological stress during single and mixed species transport of juvenile spring chinook salmon at hauling densities of 0.5 or 1.0 lb/gallon. Immediate and delayed mortalities from hauling stress were also reduced, but benefits to early marine growth and survival were limited to about the first month in seawater. The two physical factors tested (reduced light intensity and water temperature) were generally less effective than mineral salt …
Date: February 1, 1985
Creator: Wedemeyer, Gary A.
Object Type: Report
System: The UNT Digital Library
Electromagnetic Effects in Relativistic Electron Beam Plasma Interactions (open access)

Electromagnetic Effects in Relativistic Electron Beam Plasma Interactions

Electromagnetic effects excited by intense relativistic electron beams in plasmas are investigated using a two-dimensional particle code. The simulations with dense beams show large magnetic fields excited by the Weibel instability as well as sizeable electromagnetic radiation over a significant range of frequencies. The possible relevance of beam plasma instabilities to the laser acceleration of particles is briefly discussed. 6 refs., 4 figs.
Date: February 13, 1985
Creator: Kruer, W. L. & Langdon, A. B.
Object Type: Article
System: The UNT Digital Library
Mechanical test results on Dipole model C-1 25 mm aluminum collars (open access)

Mechanical test results on Dipole model C-1 25 mm aluminum collars

This report is a summary of procedures used in collaring the SSC Dipole model C-1. Included are descriptions of the collars, instrumentation, collar pack preparation, collaring procedures, and collar dimension and coil pressure data measurements taken during and testing of the magnet.
Date: February 1, 1985
Creator: Peters, C.
Object Type: Report
System: The UNT Digital Library
Elimination of electromagnetic radiation in plasma simulation: the Darwin or magnetoinductive approximation (open access)

Elimination of electromagnetic radiation in plasma simulation: the Darwin or magnetoinductive approximation

For many astrophysical and most magnetic fusion applications, the purely electromagnetic modes generated by real as well as simulation ''plasma'' fluctuations are a source of high frequency radiation that is often irrelevant to the physics of interest. Unfortunately, a numerical CFL stability limit prevents either making c infinite or deltat large while using the usual explicit Maxwell's equations for the fields. A modification of Maxwell's equations, which provides implicitly the field components, circumvents this problem. The solution is to neglect retardation effects so that the electromagnetic propagation speed is effectively infinite. The purely electromagnetic modes in this limit evolve ''instantly'' to a time-asymptotic configuration about the macroscopic plasma configuration at each new time level. The Darwin or magnetoinductive approximation effectively provides infinite propagation speeds for purely electromagnetic modes by converting Maxwell's equations from hyperbolic to elliptic in character. In practice, this is accomplished by neglecting the solenoidal part of the displacement current. The elimination of the CFL time step constraint more than offsets the substantially more complicated field solution that is required. The details of a numerical implementation of this model will be presented. Numerical examples will be given and extentions of the Darwin field solution to other plasma models …
Date: February 21, 1985
Creator: Hewett, D.W.
Object Type: Article
System: The UNT Digital Library
CSDP: the seismology of continental thermal regimes. Final technical report, January 1, 1975-December 31, 1984 (open access)

CSDP: the seismology of continental thermal regimes. Final technical report, January 1, 1975-December 31, 1984

Research progress is reported in the development of new seismological tools to define and characterize the geometry, mechanical construction and mass transport process of a geothermal system, and their application to various geothermal systems including the Fenton Hill Hot Dry Rock System, New Mexico, Kilauea and Kilauea Iki, Hawaii, Mt. St. Helens, Washington, and Long Valley, California. (ACR)
Date: February 1, 1985
Creator: Aki, K.
Object Type: Report
System: The UNT Digital Library
Chemical Technology Division Annual Technical Report for 1984 (open access)

Chemical Technology Division Annual Technical Report for 1984

Report on studies of advanced batteries, aqueous batteries, advanced fuel cells, coal utilization, methodologies for recovery of energy from municipal waste, solid and liquid desiccants, nuclear technology related to waste management, and physical chemistry of selected materials in environments simulating those of fission, fusion, and other energy systems.
Date: February 1985
Creator: Argonne National Laboratory. Chemical Technology Division.
Object Type: Report
System: The UNT Digital Library
Decontamination and Decommissioning of the Argonne National Laboratory Building 350 Plutonium Fabrication Facility : Final Report (open access)

Decontamination and Decommissioning of the Argonne National Laboratory Building 350 Plutonium Fabrication Facility : Final Report

In 1973, Argonne National Laboratory began consolidating and upgrading its plutonium-handling operations with the result that the research fuel-fabrication facility located in Building 350 was shut down and declared surplus. Sixteen of the twenty-three gloveboxes which comprised the system were disassembled and relocated for reuse or placed into controlled storage during 1974 but, due to funding constraints, full-scale decommissioning did not start until 1978. Since that time the fourteen remaining contaminated gloveboxes, including all internal and external equipment as well as the associated ventilation systems, have been assayed for radioactive content, dismantled, size reduced to fit acceptable packaging and sent to a US Department of Energy (DOE) transuranic retrievable-storage site or to a DOE low-level nuclear waste burial ground. The project which was completed in 1983, required 5 years to accomplish, 32 man years of effort, produced some 540 cubic meters (19,000 cubic ft) of radioactive waste of which 60% was TRU, and cost 2.4 million dollars.
Date: February 1985
Creator: Kline, W. H.; Moe, H. J. & Lahey, T. J.
Object Type: Report
System: The UNT Digital Library
Characterization of nuclear reactor containment penetrations. Final report (open access)

Characterization of nuclear reactor containment penetrations. Final report

This report concludes a preliminary report prepared by ANL for Sandia, published as NUREG/CR-3855, in June 1984. The preliminary report, NUREG/CR-3855, presented the results of a survey of nuclear reactor containment penetrations, covering the number of plants surveyed at that time (22 total). Since that time, an additional 26 plants have been included in the survey. This final report serves two purposes: (1) to add the summary data sheets and penetration details for the additional plants now included in the survey; and (2) to confirm, revise, or add to analyses and discussions presented in the first report which, of course, were based solely on the earlier sample of 22 plants. This final report follows the outline and format of the preliminary survey report. In general, changes and additions to the preliminary report are implied, rather than stated as such to avoid repeated reference to that report. If no changes have been made in a section the title of the section of the previous report is simply repeated followed by ''No Changes''. Some repetition is used for continuity and clarity.
Date: February 1, 1985
Creator: Shackelford, M. H.; Bump, T. R. & Seidensticker, R. W.
Object Type: Report
System: The UNT Digital Library
Design of a helium-cooled molten salt fusion breeder (open access)

Design of a helium-cooled molten salt fusion breeder

A new conceptual blanket design for a fusion reactor produces fissile material for fission power plants. Fission is suppressed by using beryllium, rather than uranium, to multiply neutrons and also by minimizing the fissile inventory. The molten-salt breeding media (LiF + BeF/sub 2/ + TghF/sub 4/) is circulated through the blanket and on to the online processing system where /sup 233/U and tritium are continuously removed. Helium cools the blanket including the steel pipes containing the molten salt. Austenitic steel was chosen because of its ease of fabrication, adequate radiation-damage lifetime, and low corrosion rate by molten salt. We estimate the breeder, having 3000 MW of fusion power, produces 6400 kg of /sup 233/U per year, which is enough to provide make up for 20 GWe of LWR per year (or 14 LWR plants of 4440 MWt) or twice that many HTGRs or CANDUs. Safety is enhanced because the afterheat is low and the blanket materials do not react with air or water. The fusion breeder based on a pre-MARS tandem mirror is estimated to cost $4.9B or 2.35 times an LWR of the same power. The estimated present value cost of the /sup 2/anumber/sup 3/U produced is $40/g if …
Date: February 1, 1985
Creator: Moir, R. W.; Lee, J. D.; Fulton, F. J.; Huegel, F.; Neef, W. S., Jr.; Sherwood, A. E. et al.
Object Type: Article
System: The UNT Digital Library
Snake River Fall Chinook Salmon Brood-Stock Program, 1984 Annual Report of Research. (open access)

Snake River Fall Chinook Salmon Brood-Stock Program, 1984 Annual Report of Research.

The objective is the enhancement of upriver stocks through research and development of an eggbank source. Viable gametes, produced from fish held to maturity in sea pens, will be made available for restoration purposes on the Snake River. Seawater entry trials with 0+-age and 1+-age fish have shown that 0+-age Snake River fall chinook salmon are not amenable to seawater entry and will either die or require up to 6 months to fully adapt to seawater. However, 1+-age smolts experience little problem at seawater entry; it is therefore suggested that Snake River fall chinook salmon be released as 1+ smolting fish in hatchery situations. Important marine mortalities occurring from osmoregulatory dysfunction, Bacterial Kidney Disease, and precocity at various life stages have been documented. Also, a previously unreported marine fungal pathogen has been identified. Mortality from this pathogen occurs from 3-years of age to maturity and can exceed 0.5% per day (resulting in losses to 90+%). At the end of December 1984, Snake River fall chinook salmon from 1980 (n = 67), 1981 (n = 876), 1982 (n = 4809), and 1983 (n = 7100) broods were under production. Because of the extensive mortality due to the marine fungal pathogen, only …
Date: February 1, 1985
Creator: Harrell, Lee W.
Object Type: Report
System: The UNT Digital Library
Hanford wells (open access)

Hanford wells

The report is comprised of a list of wells located on or near the Hanford Site. Information on location, construction and completion dates has been updated on wells existing from the days before construction of the Hanford Works to the present. 4 refs. (ACR)
Date: February 1, 1985
Creator: McGhan, V. L.; Mitchell, P. J. & Argo, R. S.
Object Type: Report
System: The UNT Digital Library
Interaction of the ATA beam with the TM/sub 030/ mode of the accelerating cells (open access)

Interaction of the ATA beam with the TM/sub 030/ mode of the accelerating cells

The interaction of the electron beam in the Advanced Test Accelerator with an azimuthally symmetric mode of the accelerating cells is investigated theoretically. The interaction possibly could cause modulation of the beam current at the resonant frequency of the mode. Values of the shunt impedance and Q value of the mode were obtained from previous measurement and analysis. Lagranian hydrodynamics is employed and a WKB solution to the equation of motion is obtained. Results indicate that the interaction will not be a problem in the accelerator.
Date: February 14, 1985
Creator: Neil, V.K.
Object Type: Report
System: The UNT Digital Library
ICF tritium production reactor (open access)

ICF tritium production reactor

The conceptual design of an ICF tritium production reactor is described. The chamber design uses a beryllium multiplier and a liquid lithium breeder to achieve a tritium breeding ratio of 2.08. The annual net tritium production of this 532 MW/sub t/ plant is 16.9 kg, and the estimated cost of tritium is $8100/g.
Date: February 28, 1985
Creator: Meier, W. R.; McCarville, T. J.; Berwald, D. H.; Gordon, J. D. & Steele, W. G.
Object Type: Article
System: The UNT Digital Library
Cooldown of an infinitely long hollow cylinder and application to the SSC cooldown (open access)

Cooldown of an infinitely long hollow cylinder and application to the SSC cooldown

This writeup is an attempt to calculate some of the cooldown parameters of a long string of magnets such as the case might be for the SSC. Besides the cooldown time, temperature gradients along a magnet, and in the transverse direction, are influenced by the mass flow of the refrigerant. A number of assumptions and simplifications have been made so that an analytical solution can be obtained. Part I of this report assumes a one dimensional model with a finite axial conductivity and infinite transverse conductivity. Part II, considers the cooldown in the transverse direction only. A common example for both parts points out the limitation of the assumptions made in Part I and suggests the need for a two dimensional time dependent model T = T(r,z,t).
Date: February 1, 1985
Creator: Caspi, S.
Object Type: Report
System: The UNT Digital Library
Effects of Handling and Crowding on the Stress Response and Viability of Chinook Salmon Parr and Smolts, 1984 Completion Report. (open access)

Effects of Handling and Crowding on the Stress Response and Viability of Chinook Salmon Parr and Smolts, 1984 Completion Report.

Transportation of migrating chinook salmon smolts from Snake River dams to the Columbia River estuary has not reversed a downward trend in Idaho stocks of this species that first became apparent in the late 1960s. Poor survival of transported smolts may be a consequence of physiological responses to stressful events during collection and transportation. This study was undertaken to evaluate the intensity of stress responses in transported smolts, to determine if stress responses decrease the viability of transported smolts, and to investigate ways of avoiding or mitigating stressful events during transportation. 34 refs., 58 figs., 13 tabs.
Date: February 1, 1985
Creator: Congleton, James L.
Object Type: Report
System: The UNT Digital Library
Characterization of reference Umtanum and Cohassett basalt (open access)

Characterization of reference Umtanum and Cohassett basalt

The Basalt Waste Isolation Project (BWIP) Materials Testing Group (MTG) provides large quantities of reference basalt for testing waste package materials under repository conditions, site sorption characteristics and other experimental purposes. This document describes the reference rock materials currently used in testing, namely entablature and colonnade basalt from the Umtanum and Cohassett flows. The data include sampling locations, bulk chemical composition, modal percentages of major phases, and the chemical and mineralogical compositions of these phases. 8 refs., 17 figs., 15 tabs.
Date: February 1, 1985
Creator: Allen, C. C.; Johnston, R. G. & Strope, M. B.
Object Type: Report
System: The UNT Digital Library
Program plan for the MBE-4 multiple beam experiment (open access)

Program plan for the MBE-4 multiple beam experiment

The technical description treats the arrangement of the Injector System (made up of an existing High Voltage Marx Generator, a new Four-beam Source array and a Beam Conditioning Unit for matching and steering) and the Accelerator Apparatus which contains the 24 shaped-pulsed accelerating units. Flexibility in diagnostic capability and physics experiments has been maintained insofar as possible.
Date: February 1, 1985
Creator: Avery, R.T.
Object Type: Report
System: The UNT Digital Library
Feeding Activity, Rate of Consumption, Daily Ration and Prey Selection of Major Predators in the John Day Pool : 1983, Annual Report. (open access)

Feeding Activity, Rate of Consumption, Daily Ration and Prey Selection of Major Predators in the John Day Pool : 1983, Annual Report.

This report summarizes activities in 1983, the second of a five year study to determine the extent of predation by resident populations of native and introduced fishes on juvenile salmonids in John Day Reservoir. As in 1982, catches of northern squawfish (Ptychocheilus oregonensis) were highest in areas adjacent to dams; percent by weight of juvenile salmonids in the diet was up to 89.7% higher in these areas. Catches of walleyes (Stizostedion vitreum vitreum) were greatest outside restricted zones (700 to 900 m above and below the dams) in spring of both 1982 and 1983. Percent by weight of juvenile salmonids in walleyes collected in 1983 was generally higher at McNary tailrace and lower at Irrigon and John Day tailrace than in 1982. Smallmouth bass (Micropterus dolomieui) was the most common species collected and contained few salmonids in 1983. Results of the diet analysis for channel catfish (Ictalurus punctatus) varied substantially between 1982 and 1983 as a result of eliminating the John Day River sampling transect and increasing sampling effort at McNary tailrace, Irrigon, and John Day tailrace. The beach seine and boat electroshocker were effective gears for evaluating prey abundance. Data obtained to estimate relationships between fork length of juvenile …
Date: February 1, 1985
Creator: Gray, Gerard A.; Administration, United States. Bonneville Power; Service, U.S. Fish and Wildlife & (U.S.), National Fishery Research Center
Object Type: Report
System: The UNT Digital Library
Effects of Formvar coating and copper-nickel outer sheath on the ac losses of multi-strand subsize cables (open access)

Effects of Formvar coating and copper-nickel outer sheath on the ac losses of multi-strand subsize cables

Ac losses of two subcables, one with Formvar coating on the strands of the BNL 12-ml NbTi/Cu/CuNi conductor and another without the coating, were measured using the ANL Subcable Test Facility. The results indicate that couplings among the strands with and without the Formvar coating were quite weak. Weak coupling of the bare strands is due to the high resistance of the copper-nickel outer sheath. In the regime of B(dot) = 0 approx. 1.2 T/s and B = 0 approx. 4 T, the magnetic diffusion time constant was (3.8 - 5.7) x 10/sup -3/ s.
Date: February 1, 1985
Creator: Kim, S. H.
Object Type: Report
System: The UNT Digital Library
High efficiency heat transport and power conversion system for cascade (open access)

High efficiency heat transport and power conversion system for cascade

The Cascade ICF reactor features a flowing blanket of solid BeO and LiAlO/sub 2/ granules with very high temperature capability (up to approx. 2300 K). The authors present here the design of a high temperature granule transport and heat exchange system, and two options for high efficiency power conversion. The centrifugal-throw transport system uses the peripheral speed imparted to the granules by the rotating chamber to effect granule transport and requires no additional equipment. The heat exchanger design is a vacuum heat transfer concept utilizing gravity-induced flow of the granules over ceramic heat exchange surfaces. A reference Brayton power cycle is presented which achieves 55% net efficiency with 1300 K peak helium temperature. A modified Field steam cycle (a hybrid Rankine/Brayton cycle) is presented as an alternate which achieves 56% net efficiency.
Date: February 1, 1985
Creator: Maya, I.; Bourque, R.F.; Creedon, R.L. & Schultz, K.R.
Object Type: Article
System: The UNT Digital Library
Long-term exposure of /sup 238/PuO/sub 2/ to a terrestrial environment. Volume III (open access)

Long-term exposure of /sup 238/PuO/sub 2/ to a terrestrial environment. Volume III

A plutonium oxide source consisting of a single piece of 83% /sup 238/PuO/sub 2/ and weighing 38 g was exposed for 2.9 years to a humid, temperate terrestrial environment in an environmental simulation chamber. The soil tray of the chamber was divided into four compartments so that different soil types could be studied under identical conditions. Soils examined in this experiment included loam, silt loam, sand, and humus. Plutonium released into the soils, the soil drainages, and the condensates from the dehumidifier was monitored throughout the experiment. The total plutonium release rate from the PuO/sub 2/ source was approximately 2 ng/m/sup 2//s. The generation of short-ranged airborne plutonium, able to travel from a few centimeters to half a meter, was one of the most significant release pathways. The amount of plutonium released in this way was 10 times that washed directly off the source by rainwater and 20 times that from the fully airborne (longer ranged) release. Of the 200 ..mu..g of plutonium deposited in the soils, less than 0.1 ..mu..g was released into the soil percolates. In fact, the soil percolates constituted the least significant release pathway. Within the uncertainties in deriving the plutonium inventories of the soil compartments, …
Date: February 1, 1985
Creator: Heaton, R. C.; Patterson, J. H.; Steinkruger, F. J. & Coffelt, K. P.
Object Type: Report
System: The UNT Digital Library