33 Matching Results

Search Results

Advanced search parameters have been applied.
in creator/contributor: "Lubell, M.S."  
Results: 1 - 24 next
open access

Experimental Studies of Electron Impact Depopulation of Excited States of Atoms: Application to Laser Development for Fusion and Isotope Separation. Progress Report, January 1, 1977--December 31, 1977

Description: Research on the depopulation of metastable states of rare gas atoms by electron impact is summarized. Superelastic, inelastic, and ionization processes are studied using a crossed electron-atom beams configuration. 17 references. (JFP)
Date: March 1, 1978
Creator: Lubell, M. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Empirical scaling formulas for critical current and critical field for commercial NbTi

Description: This paper presents the results of an analysis of both published and unpublished critical current data given as a function of both field and temperature. Simple formulas have been obtained for (1) the critical temperature as a function of field that is needed to obtain an estimate of the current sharing temperature and hence temperature margin, (2) the critical current density for constant temperature as a function of field, and (3) the critical current density for constant field as a function … more
Date: January 1, 1982
Creator: Lubell, M.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Research and development activity in support of LCP

Description: The research and development activity (RDAC) established in support of the Large Coil Program (LCP) at Oak Ridge National Laboratory (ORNL) is described. Some experimental results are presented and the importance of the RDAC to the magnet community is discussed.
Date: January 1, 1979
Creator: Lubell, M.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Parity-violating weak neutral current effects in elastic e-/sup 12/C scattering. Progress report, March 1, 1982-December 31, 1982

Description: As a means of investigating unified gauge theories of the electro-weak interaction we have been preparing an experiment for the Bates Electron Accelerator to determine the parity violating asymmetry A = (sigma/sub R/ - sigma/sub L/) for 30/sup 0/ elastic scattering by /sup 12/C of 250 MeV longitudinally polarized electrons, where sigma/sub R/ and sigma/sub L/ are respectively the differential cross sections for electrons with right and left helicities. The asymmetry depends strictly on the isos… more
Date: January 31, 1983
Creator: Lubell, M.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

High-field, high-current-density, stable superconducting magnets for fusion machines

Description: Designs for large fusion machines require high-performance superconducting magnets to reduce cost or increase machine performance. By employing force-flow cooling, cable-in-conduit conductor configuration, and NbTi superconductor, it is now possible to design superconducting magnets that operate a high fields (8-12 T) with high current densities (5-15 kA/cm/sup 2/ over the winding pack) in a stable manner. High current density leads to smaller, lighter, and thus less expensive coils. The force-… more
Date: January 1, 1989
Creator: Lue, J.W.; Dresner, L. & Lubell, M.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Development of large superconducting magnets for fusion reactors

Description: Superconducting magnets for fusion power reactors are discussed. The Large Coil Program for developing superconducting toroidal field coils for tokamak reactor is described briefly. The Large Coil Test Facility at Oak Ridge is mentioned. (MHR)
Date: January 1, 1977
Creator: Luton, J.N.; Haubenreich, P.N. & Lubell, M.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Internally Cooled Cable Superconductor (ICCS) for TF and PF coils of FED

Description: Internally Cooled Cable Superconductor (ICCS) concepts developed for TF and PF coils of FED are described. These concepts represent one of the options for FED, and other conductor concepts are still being explored, i.e., no decision has been made for the conductor concepts to be utilized for FED. The TF coil conductor design is based on an ICCS successfully used in a small test magnet at ORNL. The conductor consists of triplets of NbTi strands loosely packed in a stainless steel conduit similar… more
Date: January 1, 1982
Creator: Srivastava, V.C.; Lue, J.W. & Lubell, M.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Progress report of advanced conductor development program at ORNL

Description: This report describes the current research activities related to the development of practical high-field superconducting conductors and magnets at Oak Ridge National Laboratory (ORNL). They can be divided into two categories: (1) 12-T conductor development program, and (2) tests of Nb/sub 3/Sn conductor for the Westinghouse Large Coil Program (LCP) coil. The objective and status of each are presented below.
Date: January 1, 1984
Creator: Shen, S. S.; Fietz, W. A. & Lubell, M. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Letter report for the Superconducting Magnet Development Program, April 1, 1977--June 30, 1977

Description: The results and accomplishments of the Superconducting Magnet Development Program (SCMDP) for the second quarter of the calendar year 1977 are summarized. The presentations are arranged according to projects rather than the group organization by discipline of the Magnetics and Superconductivity Section. The design, procurement, and fabrication of the Large Coil Segment are well under way. Significant progress is reported on the conductor stability and loss experiments for both toroidal field co… more
Date: November 1, 1977
Creator: Fietz, W. A. & Lubell, M. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Magnetics and superconductivity section annual progress report for period ending December 31, 1976

Description: The Magnetics and Superconductivity Section has the responsibility for developing superconducting magnet systems for tokamak fusion machines. This is being accomplished by carrying out those research and development needs which will provide the physics understanding and engineering data necessary to design, fabricate, and test large toroidal field (TF) and poloidal field (PF) coils. This information, in addition, supports the Large Coil Program (LCP). A number of design projects have been perfo… more
Date: June 1, 1977
Creator: Lubell, M. S. & Dresner, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Letter report for the Superconducting Magnet Development Program, June 1, 1976--October 1, 1976

Description: The results and accomplishments of the Superconducting Magnet Development Program for the period June 1, 1976--October 1, 1976 are summarized in this report. The presentations are arranged according to projects. A new format has been adopted for convenience in reporting. Only projects which have reached some milestone or completed tasks are discussed.
Date: April 1, 1977
Creator: Lubell, M. S. & Dresner, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Design and construction of the EBT-P development coils

Description: The ELMO Bumpy Torus Proof-of-Principle (EBT-P) plasma physics device is a large mirror fusion machine scheduled to begin operation in 1985. It will have 36 superconducting mirror magnets arranged in a bumpy torus on a 4.5 m radius. Presented here are several of the design parameters and supporting design/analysis that have not been published until now due to contractural arrangements between ORNL and the EBT-P subcontractors.
Date: January 1, 1981
Creator: Ballou, J. K.; McManamy, T. J.; Brown, R. L.; Gray, W. H. & Lubell, M. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Preliminary results of the US pool-boiling coils from the IFSMTF full-array tests

Description: The Large Coil Task to develop superconducting magnets for fusion reactors, is now in the midst of full-array tests in the International Fusion Superconducting Magnet Test Facility at Oak Ridge National Laboratory. Included in the test array are two pool-boiling coils designed and fabricated by US manufacturers, General Dynamics/Convair Division and General Electric/Union Carbide Corporation. So far, both coils have been energized to full design currents in the single-coil tests, and the Genera… more
Date: January 1, 1986
Creator: Lue, J. W.; Dresner, L.; Lubell, M. S.; Luton, J. N.; McManamy, T. J. & Shen, S. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A review of the structural aspects of the Large Coil Task

Description: The Large Coil Task (LCT) was initiated a decade ago by the United States (US), EURATOM (EU), Japan (JA), and Switzerland (CH) under the auspices of the International Energy Agency (IEA) to develop superconducting magnets for toroidal field coils for tokamak fusion reactors. Under the IEA agreement, EU, JA, and CH each fabricated one coil and shipped it to the Oak Ridge National Laboratory (ORNL), where the coils were assembled, along with three US coils (GD, GE, and WH), in the International F… more
Date: January 1, 1987
Creator: Lubell, M. S.; Clinard, J. A.; Lue, J. W.; Luton, J. N.; McManamy, T. J. & Shen, S. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Comparison of Nb/sub 3/Sn and NbTi superconductor magnet ITER (International Thermonuclear Experimental Reactor) devices

Description: The TETRA tokamak systems code is used to compare designs for the International Thermonuclear Experimental Reactor (ITER) that use Nb/sub 3/Sn and NbTi superconductor magnets. Similar minimum-cost devices are found with both types of conductors when superfluid helium (He-2) is used in conjunction with the NbTi. The cost of using NbTi with He-1 cooling is much higher than that of using Nb/sub 3/Sn or NbTi with He-2 cooling. Generally, the minimum-cost devices occur for peak fields at the toroida… more
Date: January 1, 1988
Creator: Galambos, J. D.; Peng, Y. K. M.; Reid, R. L.; Lubell, M. S.; Dresner, L. & Miller, J. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Spontaneous quenches of a high temperature superconducting pancake coil

Description: A double-pancake coil made of Bi-2223/Ag high temperature superconducting (HTS) tape was constructed with an embedded heater and graded conductors to study the stability and quench propagation in HTS coils. The experiments were performed with liquid nitrogen and gaseous helium cooling in temperatures ranging from 5 to 77 K. The coil was very stable, and no ``normal`` zone was sustained or propagated with local pulsed heating. However, spontaneous quenches of the cod were experienced. This was f… more
Date: September 1, 1995
Creator: Lue, J.W.; Lubell, M.S.; Aized, D.; Campbell, J.M. & Schwall, R.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Sixteenth International Conference on the physics of electronic and atomic collisions

Description: This report contains abstracts of papers on the following topics: photons, electron-atom collisions; electron-molecule collisions; electron-ion collisions; collisions involving exotic species; ion- atom collisions, ion-molecule or atom-molecule collisions; atom-atom collisions; ion-ion collisions; collisions involving rydberg atoms; field assisted collisions; collisions involving clusters and collisions involving condensed matter.
Date: January 1, 1989
Creator: Dalgarno, A.; Freund, R.S.; Lubell, M.S. & Lucatorto, T.B. (eds.)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Partial-array test results in IFSMTF

Description: Preliminary performance tests of two large superconducting magnets have been carried out in the International Fusion Superconducting Magnet Test Facility (IFSMTF). Each of the Japanese (JA) and General Dynamics/Convair (GD) coils was operated up to its full design current of 10.2 kA with the other serving as an adjacent background coil at 40% of design current. Cryostatic stability was demonstrated for both coils by noting recovery from a full half-turn (5 m) driven normal. A new pick-up coil c… more
Date: January 1, 1985
Creator: Lue, J. W.; Dresner, L.; Koizumi, K.; Lubell, M. S.; Luton, J. N.; Shen, S. S. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Performance analysis of reciprocating regenerative magnetic heat pumping. Final report

Description: Transient flow phenomena in the regenerator tube of reciprocating magnetic heat pumps have been studied numerically and experimentally. In the numerical study, two approaches were taken: (1) solving the energy balance equations for fluid through a porous bed directly and (2) solving the Navier-Stokes equations with a buoyancy force term in the momentum equation. A flow thermal mixing problem was found in both approaches because of the piston-like motion of the regenerator tube that hinders the … more
Date: February 1, 1994
Creator: Chen, D. T.; Murphy, R. W.; Mei, V. C.; Chen, F. C.; Lue, J. W. & Lubell, M. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of Strengthened Bundle High Temperature Superconductors

Description: In the process of developing high temperature superconducting (HTS) transmission cables, it was found that mechanical strength of the superconducting tape is the most crucial property that needs to be improved. It is also desirable to increase the current carrying capacity of the conductor so that fewer layers are needed to make the kilo-amp class cables required for electric utility usage. A process has been developed by encapsulating a stack of Bi-2223/Ag tapes with a silver or non-silver she… more
Date: December 31, 1997
Creator: Lue, J.W.; Lubell, M.S.; Demko, J.A.; Tomsic, M. & Sinha, U.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Test results of the US-LCT pool-boiling coils in the International Fusion Superconducting Magnet Test Facility (IFSMTF)

Description: The international Large Coil Task (LCT) has designed, built, and successfully tested six different toroidal field coils. Each has a 2.5- x 3.5-m D-shaped bore, a current between 10 and 18 kA, and is designed for stable operation at 8 T, with a superimposed pulsed field of 0.14 T in 1.0 s, and simulated nuclear heating. Included in the torus are two pool-boiling coils designed and fabricated by US firms, General Dynamics/Convair Division (GD) and General Electric/Oak Ridge National Laboratory (G… more
Date: January 1, 1987
Creator: Shen, S. S.; Dresner, L.; Lubell, M. S.; Lue, J. W.; Luton, J. N.; McManamy, T. J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
Back to Top of Screen