A procedure for determining the commercial feasibility of fabricating in situ cu-nb multifilamentary composites for high stress, high conductivity applications is discussed. these materials offer anomalously high strengths when compared with conventional composites. ultimate tensile strengths as… More

The present interest in the nb-ti composite conductors with very fine filaments has developed because of the advent of plans for a superconducting super collider. the fermi energy doubler utilized wire with 10 diameter filaments; the ssc will require wire with 3 diameter filaments. the reduction in… More

The present interest in nbti composite conductors with very fine filaments has developed because such material in the superconducting super collider (ssc) is needed. it is now possible to produce material, at least on a small scale, with nbti filaments 2.5um in diameter, which exhibits >2500 a/mm at… More

Most superconductors commercially produced in the united states are copper stabilized. aluminum stabiliz- ation, however, is a very desirable approach as this metal has excellent low temperature electrical conduct- ivity when pure, low magnetoresistance, low heat capacty, low density, and high… More

There has been for some years a national need for a reliableand inexpensive commercial process for the production of a high current density superconductor that will operate in fields of 18t and above. recently there have been indications, both in the u.s. and japanese literature, that a powder… More

In recent months, by the use of diffusion barriers, high homogeneity raw material and improved heat treatments, high jc fine filament composite superconductors have been produced commercially for use primarily in superconducting suplex collider (ssc) dipoles and quadrupoles. in these improved… More

There has been, for some years, a national need for a higher quality, higher jc nb3sn than that developed over 10 years ago and used in the large volume u.s. applications, i.e. westinghouse lcp, hftf, and mit 12t. in recent months,bronze processed material with properties at least equal, ifnot… More

At fields of 0 to 0.3 t, as used in the superconducting super collider injection field, coupling between nbti filaments in fine filamentary composites has been found to occur in some materials. this is particularly true when theinterfilamentary spacing falls below 0.35 m and the matrix material is… More

Recently, significant improvements in jc's of nbti fine filamentary wire have been achieved at fields of 5 to 8 t inmaterials with both fine and coarse filaments, but questionshave been raised as to the ductility and piece lengths that can be achieved commercially in the fine filament wires with the… More

The current methods of fabricating nb3sn multifilament superconductors present various problems. in the conventional bronze process, the low tin content of the 13.5-wt% sn bronze seriously limits the current density and leaves much of the nb unreacted. the relatively high melting point, higher sn… More

For several years the fusion community has recognized the need for a radiation resistant, high field superconductor. niobium nitride demonstrates these capabilities. however, bulk manufacture of nbn conductors has yet to be accomplished. thermal nitriding offers the bulk processing capability but… More

Since the new ceramic superconductors broke the liquid nitrogen barrier with the discovery of the yba(2)cu(3)o(7-x) (123) superconductors, having a critical temperature (t(c)) in the mid-nineties kelvin, much work hasbeen devoted to them. surprisingly, the transport current densities (j(c)) have… More

Tremendous excitement and interest has been generated in recent months over the discovery of the yba(2)cu(3)o(7-x) (123) liquid nitrogen superconductors. however, this excitement has been tempered by the inability to achieve large transport current densities (j(c)s) in bulk-processed polycrystalline… More

Presently, the only superconductor available commercially insignificant volume for operation at fields above 12 t, is nb3sn, and it has been shown to be sensitive to irradiation damage and to have very significant strain sensitivity, particularly at high fields. both of these facts make large… More

Very significant improvements in the properties of fine filamentary nbti have been achieved recently, largely as a result of attempts to meet the requirements of the superconducting super collider (ssc). these improvements have, in some cases, been accompanied by a reduction in ductility and a… More

For several years the fusion community has recognized the need for a high field superconductor with enhanced strain and radiation resistance. niobium nitride (nbn) demonstrates these capabilities. present techniques to manufacture multifilament nbn conductors employ some kind of deposition process… More

Availibility of silicon radiation detectors with large sensitive depths has been seriously restricted by lack of a good supply of very high resistivity, high quality, single crystals of silicon. this program is directed at a cost-effective and reliable method for making silicon for detectors with… More

The discovery of the yba(2)cu(3)o(7)-(x)(123) superconductors with a critical temperature (t(c)) well above liquid nitrogen temperatures brought the level of interest and excitement in superconductivity to unprecedented heights. unfortunately, the transport current density (j(c)) of this material,… More

Tremendous excitement and interest has been generated in recent months over the discovery of the yba(2)cu(3)o(7-x) ("123"), liquid nitrogen superconductors. however, this exitement has been tempered by the inability to achieve large transport j(c)'s in bulk-processed polycrystalline materials… More

One of the priorities in the u.s. fusion technology program is the development and design of high strength, high field magnets (copper alloyed) that may be considered in ignition devices for burning plasma experiments, such as the compact ignition tokamak (cit). reliable operation will require a… More

Accelerators under consideration have magnet systems that constantly require fine filament conductors with high current densities at high fields in large diameter strands. in recent years, material has been produced in fine wire form with very promising properties. in addition, many of the problems… More

The formation of homogeneous nb3sn reaction layers during reaction heat treatments is limited by the sn diffusion through the nb3sn layer. it has been shown that ti additions increase the diffusion rates of sn through nb3sn. ti-doped nb3sn has excellent high field properties due to increased upper… More

In order to achieve superconducting magnet applications in the 20t range new superconducting materials are required. even the high-tc materials will require operating temperatures near that of liquid helium to meet these conditions. prior to the excitement generated over the discovery of the high-tc… More

The objective of this program is to investigate the technical feasibility of producing high strength, high conductivity cunb metal-matrix microcomposite by methods other than melting/casting and powder metallurgy. three alternative processes will be examined - continuous filaments, rings, and "jelly… More

A continuing need exists for advanced superconducting wires that can operate in increasingly high magnetic fields. the next generation of magnets are anticipated to generate fields of 12 to 18 t, and a conductor is needed to operate effectively in these high fields. niobium-tin (nb3sn)… More

New superconducting wires with superior upper critical fields (bc2) and hence excellent current-carrying capabilities in high magnetic fields are required to build high-field (>20 tesla at 4.2 k) superconducting magnets. in addition to bismuth-based oxide superconductors, chevrel-phase materials are… More

Fabrication of the magnets for the superconducting super collider (ssc) will necessitate the purchase of thousands of tons of fine-filament niobium-titanium (nbti) wire. forged nbti ingots are currently utilized in the manufacture of this wire. substantial savings in raw material and processing… More

This proposal is for the development of a new technique for materials processing in the materials processing & manufacturing category under the scope of research for design & manufacturing systems. this technique will be demonstrated by the fabrication of a composite bn3sn superconductor and will… More

The development of applied superconductivity continuously requires advanced superconducting wires that can carry higher supercurrents at higher magnetic fields. niobium-tin (nb3sn) is one of the most important high field superconductors. developing artificial flux-pinning centers in the… More

A need exists at the superconducting super collider laboratory (sscl) for a high strength, moderate conductivity copper based alloy or composite for possible application as a bore tube liner for the dipole magnets. the effectiveness of the tube in this application is a function of the material's… More

Nb3al is an a-15 type supercondductor with higher tc, bc2 and better strain tolerance than nb3sn. it is an attractive candidate material for building high-field superconducting magnets in the fusion and high energy physics applications. because the stoichiometric nb3al needs to be formed at the… More

The stability and efficiency of large scale superconducting magnet systems often suffer from interstand eddy current losses. there are drawbacks in the existing hard chrome plating technique when it is applied to niobium-tin (ng3sn) strands. a new technique of developing a continuous, built-in… More

The accelerator, fusion, and nuclear magnetic resonance (nmr) projects in the field of applied superconductivity all require new high-field superconducting wires that have higher current-carrying capability in higher magnetic fields. up to now, niobium tin (nb3sn) is the most important practical… More

The best enchancement in critical magnetic field (hc2) for niobium titanium (nbti) alloys has been found for a 15 to 25 wt. % ternary addition of tantalum. the precise alloy composition for the best combination of critical temperature (tc), hc2 precipitation kinetics, critical current (jc) and… More

Pure copper is widely used in industry as a stabilizing material in superconducting wires. Copper posseses excellent thermal and electrical properties. It is mechanically compatible with NbTi superconducting filaments relatively inexpensive and provides sufficient stabilization of a standard under… More

41160 Supercon, Inc. In this project, a new approach to superconductor fabrication will be investigated. The approach uses expanded tantalum mesh, rather than continuous tantalum foil, in combination with pure titanium and pure niobium sheets. It is anticipated that the tantalum mesh will result… More

40733 November 12, 1996 Supercon, Inc. Currently, niobium-titanium alloy is the most important technical superconductor used for various applications. This project will develop a new niobium-titanium alloy-based high-field superconductor with finely… More

41161 Supercon, Inc. This project will investigate the possibility of developing a superconducting composite wire in a cost-effective way. It is expected that use of composite filaments instead of alloy filaments will greatly improve the fabricability of the superconducting wire and cut the… More

40734 November 13, 1996 Supercon, Inc. Niobium titanium (NbTi) has been the most common material used for superconducting magnets. The relative ease with which a NbTi based alloy can be fabricated into a multifilamentary conductor is its most appealing… More

172 Conventionally Processed NbTi Superconductors with Artificial Ferromagnetic Pinning Centers for High Magnetic Field (>8 T) Application--Supercon, Inc., 830 Boston Turnpike, Shrewsbury, MA 01545-3301; (508) 842-0174 Mr. Charles Renaud, Principal Investigator Ms. Elaine Drew, Business… More

173 Development of a High Field NbTi Superconductor Using an Approach Combining Artificial Flux Pinning With Conventional Thermomechanical Processing--Supercon, Inc., 830 Boston Turnpike, Shrewsbury, MA 01545-3301; (508) 842-0174 Dr. Dingan Yu, Principal Investigator Ms. Elaine Drew,… More

50806-98-I Production of Jelly-Roll Process Nb3Al Multifilamentary Superconducting Wire Using Warm Hydrostatic Extrusion--Supercon, Inc., 830 Boston Turnpike, Shrewsbury, MA 01545-3301; (508) 842-0174 Mr. Mark K. Rudziak, Principal Investigator Ms. Elaine Drew, Business Official DOE Grant No.… More

50765-98-I Development of High Field, High Current Density Nb3Sn Conductor with Engineered Microstructures--Supercon, Inc., 830 Boston Turnpike, Shrewsbury, MA 01545-3301; (508) 842-0174 Mr. Terence Wong, Principal Investigator Ms. Elaine Drew, Business Official DOE Grant No.… More

50408-98-I High Strength, High Conductivity, Low Activation Copper Matrix Nanocomposite for Fusion Reactor First Wall Application--Supercon, Inc., 830 Boston Turnpike, Shrewsbury, MA 01545-3301; (508) 842-0174 Mr. Charles Renaud, Principal Investigator Ms. Elaine Drew, Business Official DOE Grant… More

Not Available Space-based imaging techniques require optical techniques in order to optimize target-to-background contrast. To meet this need, Physical Optics Corporation (POC) proposes a Spectrally Optimized Smart (SOS) Camera, that will exploit and build on POC's proprietary Spectrally Adaptive… More

Not Available Spectral Sciences, Inc. (SSI) proposes to address shortcomings in current hyperspectral target identification algorithms and their evaluation by the novel approach of coupling the target identification process to first-principles radiation transport (RT) calculations that model… More

65168 The vast majority of superconducting magnets are constructed from Nb-47Ti because of its excellent mechanical and electrical characteristics and low cost. Further Jc improvements in the mid-to-high-field region would have benefits for quadrapole magnets and ¿low field¿ graded windings… More

65411 The high energy physics community requires the development of superconducting wires for use in magnets that generate magnetic fields of 15T and above. Currently, Nb3Sn is the only commercially available superconductor capable of operating at such high fields. Powder-In-Tube (PIT) Nb3Sn… More

60746 Nb3Sn superconductor, produced by the powder-in-tube (PIT) method has shown excellent critical density and strain tolerance. Based on performance alone, PIT-type conductors would be utilized in many high field magnet applications including high energy physics. However, the high cost… More

60746 Nb3Sn superconductor, produced by the powder-in-tube (PIT) method has shown excellent critical density and strain tolerance. Based on performance alone, PIT-type conductors would be utilized in many high field magnet applications including high energy physics. However, the high cost… More

70684 For high energy physics applications, Nb3Sn superconductors are the main material used to construct magnets that operate at magnetic fields greater than 12 Tesla. However, future applications will require higher performance and lower manufacturing costs. Specifically, the targets of… More

70818 In order for the next generation of high energy physics particle accelerators to reach higher collision energy levels, there is need for high field dipole magnets. This in turn demands superconductors that have higher critical current densities than can be reached with NbTi. Nb3Sn… More

70579 Containment walls in fusion reactors will be subjected to intense radiation fields and severely abnormal conditions. Therefore, first-wall materials will require high tensile strength and ductility, low temperature fracture toughness, and good fatigue properties. This project will… More

65411 The high energy physics community requires the development of superconducting wires for use in magnets that generate magnetic fields of 15T and above. Currently, Nb3Sn is the only commercially available superconductor capable of operating at such high fields. Powder-In-Tube (PIT)… More

65411 The high energy physics community requires the development of superconducting wires for use in magnets that generate magnetic fields of 15T and above. Currently, Nb3Sn is the only commercially available superconductor capable of operating at such high fields. Powder-In-Tube (PIT)… More

This Small Business Innovation Research Phase I project will develop an innovative process for the fabrication of nanometer-scale alloy powders. The innovation will result from the combination of state-of-the-art composite wire manufacturing techniques with recently developed powder fabrication… More

73085S03-I The Heavy Ion Fusion Program has among its major objectives the development of cost effective, high gradient, superconducting quadrupole arrays for multiple beam focusing. A compact array design is required to limit the size and cost of the acceleration system. A conductor with the… More

73086S03-I One objective of the High Energy Physics (HEP) magnet development program is the design and development of dipole magnets with fields greater than 15T. Promising candidates for high field applications in the 15T regime are the so-called High Temperature Superconductors. In particular,… More

73080S03-I The high energy physics (HEP) community requires the development of superconducting wires for use in magnets generating magnetic fields of 15 tesla and above. Currently, Nb3Sn is the only commercially available superconductor capable of operating at such high fields. However, its… More

This Small Business Innovation Research Phase I project will develop an innovative process for incorporation of nanometer-scale inclusions into superconducting Niobium Titanium (NbTi) alloy wires. These inclusions will serve as magnetic flux pinning sites, resulting in improved critical… More

DESCRIPTION (provided by applicant): The specific aim of the Phase I and Phase II research program will be to design and build an "open", split pair coil, high field (>1 .5T), cryogen-free MRI magnet. The key innovation that will make this goal feasible is the development of an advanced, high… More

78216S High Energy Physics requires the development of superconducting wires for use in magnets that generate fields greater than 15 tesla for such applications as the interaction region quadrupoles for the planned Large Hadron Collider luminosity upgrade. Although niobium-tin conductors are… More

79756S High Energy Physics requires the development of superconducting wires for use in magnets generating fields greater than 15 tesla for applications in areas like the planned interaction-region quadrupoles for the Large Hadron Collider (LHC) luminosity upgrade. Niobium-tin conductors are… More

DESCRIPTION (provided by applicant): The specific aim of the Phase I and Phase II research program will be to design and build an "open", split pair coil, high field (>1 .5T), cryogen-free MRI magnet. The key innovation that will make this goal feasible is the development of an advanced, high… More

This Small Business Innovation Research (SBIR) Phase I project is intended to demonstrate a new process for manufacturing valve metal fibers for use in producing capacitors. The technology is applicable to all valve metals used for making solid electrolytic capacitors. If successful, this… More

High Energy Physics requies the development of superconducting wire for use in magnets generating fields >15T. Superconductors made from MgB2 have the potential to provide the necessary performance, but current conductors cannot meet the requirements for high field applications, due to low fill… More

The high energy physics (HEP) community requires the development of superconducting wires for use in magnets that generate magnetic fields greater than 12 T. Currently, Nb3Sn is the only commercially available superconductor capable of operating at such high fields. However, the technical and cost… More

Bi2212, which has the highest Jc of any practical superconductor at fields greater than 15 T, is currently being considered for high-field particle accelerator magnets. In particular, it is attractive for high field magnets that are needed to improve the performance of machines such as the Large… More

This Small Business Innovative Research (SBIR) Phase II project is intended to develop a new process for manufacturing tantalum (Ta) metal fibers for use in producing tantalum capacitors, and advance this process to the stage of commercialization. This technology, which has been demonstrated in… More

NbTi and Nb3Sn, the primary materials currently used for the high field magnets in high energy physics research, are limited to magnetic field generation of about 10.5 T and 20 T respectively. In order to generate magnetic fields greater than 20 T, a new high field conductor, such as Bi2212, is… More

The High Energy Physics (HEP) community requires the development of superconducting wires for use in magnets generating magnetic fields greater than 12 Tesla. Currently, Nb3Sn is the only commercially available superconductor capable of operating at such high fields. However, the technical and cost… More

The high energy physics (HEP) community requires the development of superconducting wires for use in magnets generating magnetic fields greater than 12 T. Currently, Nb3Sn is the only commercially available superconductor capable of operating at such high fields. However, its technical and cost… More

Future magnets for high energy physics (HEP) require superconductors with improved high critical current carrying capacity at high magnetic fields, decreased effective filament sizes, and lower cost. This project will investigate an improved method of fabricating such superconductors using the… More

The high energy physics community seeks high performance multifilament superconducting wire for use in magnets operating in the range of 12-16 T or higher. Nb3Sn conductors fabricated by the internal tin (IT) method presently represent the state-of-the-art for these applications. However, one… More

Future magnets for Fusion Energy Systems require superconducting cables with improved high critical current carrying capacity at high magnetic fields, 20 Kelvin operation, low AC losses and lower cost. A new method of fabricating a high current cable with 2G HTS tapes has been developed that will… More

This proposal describes an innovative high strength silver alloy for use in making Bi2212/Ag round wire conductor. Bi2212 is a high field superconductor that has the highest Jc of any practical superconductor at fields above 20 T. NbTi and Nb3Sn, which are currently the primary materials currently… More

Future magnets for High Energy Physics (HEP) require superconductors with improved high critical current carrying capacity at high magnetic fields, decreased effective filament sizes and lower cost. An improved method of fabricating such superconductors is being investigated using the Internal Tin… More

The high energy physics community seeks high performance multifilament superconducting wire for use in magnets operating in the range of 12-15T or higher. Nb3Sn conductors fabricated by the internal tin (IT) method presently represent the state-of-the-art for these applications. The internal tin… More

This proposal describes an innovative high strength silver alloy for making Bi2212/Ag round wire conductor. To generate magnetic fields greater than 20 T, a new high field superconductor such as Bi2212 is needed. However, Bi2212 is brittle ceramic that can be easily damaged, and its critical current… More

Future magnets for Fusion Energy Systems require superconducting cables with improved high critical current carrying capacity at high magnetic fields, 20 Kelvin operation, low AC losses and lower cost. A new method of fabricating a high current cable with 2G HTS tapes has been developed that will… More

The internal tin tube (ITT) process is potentially the lowest cost approach for manufacturing Nb3Sn superconductors. A present, multifilament conductors made by the ITT process are of necessity cold processed to wire. Since the filaments are not metallurgically bonded to each other, they can move… More

Future magnets for Fusion Energy Systems require superconducting cables with improved high critical current carrying capacity at high magnetic fields, 20 kelvin operation, low AC losses and lower cost. The second generation high temperature superconductors are manufactured in tape form that has… More