8 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Geometry"  
Results: 1 - 8
open access

Static and dynamic analyses on the MFTF-B vacuum vessel. Revision 1

Description: The Mirror Fusion Test Facility is a major magnetic fusion energy project at the Lawrence Livermore National Laboratory. An important component of this facility is the vacuum vessel, which forms the vacuum chamber. The vessel is supported on twenty-two pairs of legs that rest on reinforced concrete piers. In performing static and dynamic analyses on the vacuum vessel, we separately investigated the load distribution under gravity loads, pressure loads, electromagnetic loads, and thermal loads. … more
Date: January 15, 1984
Creator: Ng, D.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Potential of high-average-power solid state lasers

Description: We discuss the possibility of extending solid state laser technology to high average power and of improving the efficiency of such lasers sufficiently to make them reasonable candidates for a number of demanding applications. A variety of new design concepts, materials, and techniques have emerged over the past decade that, collectively, suggest that the traditional technical limitations on power (a few hundred watts or less) and efficiency (less than 1%) can be removed. The core idea is config… more
Date: September 25, 1984
Creator: Emmett, J. L.; Krupke, W. F. & Sooy, W. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Computations of VSWR and mode conversion for complex gyrotron window geometries

Description: A computational method is described for determining VSWR and mode conversion for complex gyrotron window geometries. Assuming symmetric TE/sub on/ modes propagating in a circular cross-section guide, containing the window, one can write the total solution to the wave equation as the sum of the incident wave plus a wave scattered from the dielectric window region. The equations can be reformulated in terms of the scattered wave, resulting in a Helmholtz wave equation with an inhomogeneous drivin… more
Date: January 1, 1984
Creator: Salop, A. & Caplan, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Superconducting magnet technology for accelerators

Description: A review article on superconducting magnets for accelerators should first answer the question, why superconductivity. The answer revolves around two pivotal facts: (1) fields in the range of 2 T to 10 T can be achieved; and (2) the operating cost can be less than conventional magnets. The relative importance of these two factors depends on the accelerator. In the case where an upgrade of an accelerator at an existing facility is planned, the ability to obtain fields higher than conventional mag… more
Date: March 1, 1984
Creator: Palmer, R. & Tollestrup, A.V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of boron and gadolinium concentration on the calculated neutron multiplication factor of U(3)O/sub 2/ fuel pins in optimum geometries

Description: The KENO-Va improved Monte Carlo criticality program is used to calculate the neutron multiplication factor for TMI-U2 fuel compositions in a variety of configurations and to display parametric regions giving rise to maximum reactivity contributions. The lattice pitch of UO/sub 2/ fuel pins producing a maximum k/sub eff/ is determined as a function of boron concentrations in the coolant for infinite and finite systems. The characteristics of U/sub 3/O/sub 8/-coolant mixtures of interest to mode… more
Date: October 1, 1984
Creator: Thomas, J. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Characterization of crystalline rocks in the Lake Superior region, USA: implications for nuclear waste isolation. [Wisconsin, Upper Peninsula of Michigan and Minnesota]

Description: The Lake Superior region (Wisconsin, the Upper Peninsula of Michigan, and Minnesota) contains 41 Precambrian crystalline rock complexes comprising 64 individual but related rock bodies with known surface exposures. Each complex has a map area greater than 78 km/sup 2/. About 54% of the rock complexes have areas of up to 500 km/sup 2/, 15% fall between 500 km/sup 2/ and 1000 km/sup 2/, 19% lie between 1000 km/sup 2/ and 2500 km/sup 2/, and 12% are over 2500 km/sup 2/. Crystalline rocks of the re… more
Date: January 1, 1984
Creator: Sood, M.K.; Flower, M.F.J. & Edgar, D.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Selection of Regenerator Geometry for Magnetic Refrigerator Applications

Description: In our effort to develop magnetic regenerators of high efficiency we have looked at the following geometries: (1) tube channels in solid block; (2) stack of perforated plates normal to the fluid flow direction; (3) stack of solid plates parallel to fluid flow direction, and packed bed of spherical particles; (4) loose packed; and (5) sintered. Reported are computations of the overall efficiency of the regenerator, considering heat transfer, longitudinal conduction, and fluid pressure drop, for … more
Date: January 1, 1984
Creator: Barclay, J. A. & Sarangi, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

MHD stability properties of bean-shaped tokamaks

Description: A study of the MHD stability properties of bean-shaped tokamak plasmas is presented. For ballooning modes, while increased indentation gives larger ..beta.. stable configurations, the existence and accessibility of the second stable region is sensitive to the pressure and safety factor profiles. The second stable region appears at lower ..beta.. values for large aspect ratio and moderately high q-values. Finite-Larmor-radius (FLR) kinetic effects can significantly improve the stability properti… more
Date: March 1, 1984
Creator: Grimm, R. C.; Chance, M. S.; Todd, A. M. M.; Manickam, J.; Okabayashi, M.; Tang, W. M. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen