US3869686A - Super-conductive coils incorporating insulation between adjacent winding layers having a contraction rate matching that of the super-conductive material - Google Patents

Super-conductive coils incorporating insulation between adjacent winding layers having a contraction rate matching that of the super-conductive material Download PDF

Info

Publication number
US3869686A
US3869686A US411219A US41121973A US3869686A US 3869686 A US3869686 A US 3869686A US 411219 A US411219 A US 411219A US 41121973 A US41121973 A US 41121973A US 3869686 A US3869686 A US 3869686A
Authority
US
United States
Prior art keywords
coil
magnetic field
super
reinforcing fiber
fiber layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US411219A
Other languages
English (en)
Inventor
Hans Benz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BBC Brown Boveri AG Switzerland
Original Assignee
Bbc Brown Boveri & Cie
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bbc Brown Boveri & Cie filed Critical Bbc Brown Boveri & Cie
Application granted granted Critical
Publication of US3869686A publication Critical patent/US3869686A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F6/00—Superconducting magnets; Superconducting coils
    • H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S505/00—Superconductor technology: apparatus, material, process
    • Y10S505/825—Apparatus per se, device per se, or process of making or operating same
    • Y10S505/88—Inductor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S505/00—Superconductor technology: apparatus, material, process
    • Y10S505/825—Apparatus per se, device per se, or process of making or operating same
    • Y10S505/884—Conductor
    • Y10S505/887—Conductor structure

Definitions

  • ABSTRACT A coil for producing a magnetic field is wound from a conductor made from a super-conductive material and is impregnated with a hardenable synthetic and preferably epoxy resin. lncluded within the coil structure prior to impregnation is a temporary inlay structure made from a solid material, e g.
  • Woods-metal which isthereafter removed, by heating, subsequent to hardening of the impregnating means in order to establish cooling ducts through which a coolant is passed while the coil is in operation in order to maintain the coil in its superconductive state.
  • the coil structure also includes structural reinforcing elements in the form of fiber glass fabrics or netting having a thermally conductive metallic surface coating, and also metallic inserts in fabric or mesh form made from insulated copper or aluminum wire to assist in the removal of heat from the coil.
  • the present invention relates to a method for the preparation of an impregnated electrical coil, especially a coil made from a winding consisting of a superconductive material, which is used to generate electromagnetic steady or pulsating fields, and which is provided with at least one cooling duct for the passage of a liquid of gaseous coolant, as well as a coil manufactured in accordance with this method.
  • solid, thin wires of transition metal alloys such as NbZr or NbTi, sheathed with a thin copper layer, or thin tapes, coated with the intermetallic compound Nb Sn, have been used primarily for the construction of super-conductive high frequency field coils with current densities in excess of 10,000 to 15,000 A/cm such as experimental solenoids, rayguiding and ray-focusing magnets.
  • the super-conductors discussed above have the additional disadvantage that their pulsating field losses become prohibitively high at a frequency of 1 Hz, and that they are unsuitable for the construction of rayguiding magnets for synchrotron-accelerators, to give one example.
  • the magnetic instabilities and pulsating field losses are reduced further by other additional steps, for example, by a twisting of the filaments within the conductor, and by transposing several of the twisted conductors.
  • the contraction of the materials involved differs widely when they are being cooled from room temperature to operating temperature, that is to 4 K.
  • the conductor consisting of NbTi filaments imbedded in Cu, has at 4 K a contraction of Al 300 -l0 while pure impregnating resin has a contraction of Al/1-- 600 to 1,200 10? Therefore, after the cooling-off process, a tension caused by the dissimilar contraction of conductor and resin will be geometrically superimposed onto the state of tension generated by the winding operation.
  • the impregnating resin If the impregnating resin is unable to sustain these stresses, it will crack, and the mechanical tensional energy, transformed into heat, will drive the winding into the normal-conductive state, leading again to degrading and training effects.
  • the contraction characteristics of the resin should conform to the contraction characteristics of the conductor and should possess high mechanical stability at low temperatures in its hardened state. This can be accomplished in principle by mixing the resin with suitable fillers.
  • the windings In order to attain a high current density, the windings must be wound very tightly and solidly. In order to insure complete and thorough impregnation, the resin must possess a very low viscosity. Unfortunately, the filler will greatly increase this value and thus endanger a thorough impregnation. Furthermore, the very fine gaps and interspaces of the winding will act as a filter, preventing the filler from penetrating the winding at all, or in the quantities desired.
  • the mechanical stress generated within the coil can attain such a high value that this may exceed the yieldpoint of the matrix material.
  • antimagnetic stainless steel tape, or stampings should be laid in with the conductor or in the coil.
  • the desired high field-accuracy of the beamtransport and focussing magnets can only be attained by a suitable homogeneous and geometrically accurate coil.
  • the principal object of this invention is to provide an improved electromagnetic coil which does not exhibit the aforementioned disadvantages.
  • the invention is characterized by the fact that between layers of the electrically insulated superconductor winding, a spacer of glass-fiber-reinforced material is laid, this material having such characteristics and properaties that it together with the impregnating medium form an eddy current-free, mechanically rigid system, the contraction factor of which corresponds to that of the super-conductor.
  • glass-fiber spacers woven or braided It is advantageous to use glass-fiber spacers woven or braided. It is also appropriate to stratify the spacers with materials having a good thermal conductivity, e.g., metals like copper or aluminum, or graphite powder. In doing so, it is of advantage to seee that the metalliclayer possesses a high electrical resistivity, in the case of a coil producing a pulsating magnetic field, sothat the eddy current loss can be eliminated. This can be achieved by applying these metallic layers in the form of small closely laid parallel tapes, each separated from the other. 1
  • a further object of the invention is to provide an improved process for fabrication of the improved coil having at least one internal cooling duct, the improvement being characterized by the fact that during winding of the coil, in addition to the glass-fiber-reinforced spacer, at least another layer is laid into the interior of the coil being formed, this layer being removed by a chemical or thermal process to form a coolant duct, after the coil has been wound and impregnated, or after a thermal treatment following impregnation.
  • FIG. 1 illustrates the method for the manufacture of the coil
  • FIG. 2 is a view in section of one species of a coil according to the invention
  • FIG. 3 depicts a section of the coil along line Ill III in FIG. 2, and
  • FIGS. 4 to 6 show various partial sectional cuts through a species of the coil.
  • FIG. 1 shows a super-conductive coil, ready for impregnation and placed within a mold.
  • the mold illustrated here consists of two inner, separable halves l and 2, into which are inserted, prior to winding of the coil, the outer disks 3 and 4 and the supporting sleeves 5 and 6.
  • the band 7, made of fabric is put in place, and the mold with its two outer halves 8 and 9 is closed. Seals 10 will keep the cover vacuum-tight.
  • Very compact windings with thin-super-conductors 11 of approximately 0.4 to 0.5 mm diameter are impregnated in the described closed mold most advantageously by means of an impregnating medium of low viscosity.
  • the impregnating medium After an evacuation at increased temperav ture, lasting for several hours, the impregnating medium is introduced through the inlet pipe 13, distributed over the periphery of the winding by means of the annular groove 14 and forced through the winding by an increase in pressure until it flows through the outlet pipe 15 free of gas bubbles.
  • the outlet pipe can be closed off to subject the impregnating medium to a high static pressure so that it will penetrate even the smallest pores within the winding.
  • an impregnating medium oflow viscosity and without filler of such species that the system, formed by the impregnating medium and the material of the intermediate pieces 12, has a contraction characteristic which matches the contraction characteristic of the super-conductor 11.
  • This can be accomplished, for example, by a system formed by a specially selected epoxy resin which is filled at 60 to 70% by volume with a composited fabric made from glass silk.
  • a system of this type insures simultaneously a high mechanical strength, comparable with the strength of a high-grade alloy steel, thus serving to reinforce the coil unit mechanically.
  • the outer disks 3 and 4 are provided with radially arranged slots 16, FIG. 3, through which the inlays 17 are guided up to the inner rim of the mold, and which form together with the annular groove 14 apertures to admit the impregnating resin.
  • the material of these prefabricated outer disks is again formed by a system of a tightly compressed fabric, for example, a glass silk fabric and a hardened impregnating resin, such as an epoxy resin with a contraction characteristic that matches the contraction characteristic of the superconductor.
  • the supporting sleeves 5 and 6 are formed from the same system of materials as the outer disks 3 and 4. They serve to maintain the precise cylindrical internal geometry of the coil, and to reinforce the unit mechanically.
  • the band 7 arranged at the outer circumference of the coil consists of the same glass silk fabric as the intermediate pieces 12, and serves additionally as a mechanical reinforcement of the winding unit.
  • winding geometries are kept simple and if super-conductors of greater diameter are being used, it becomes possible to simplify the impregnating process by omission of the outer mold halves 8 and 9, and by impregnating the coil in its evacuated state by a dipping process, and possibly by utilizing a higher pressure, i the impregnating medium.
  • the winding shown in FIG. 1 is constructed as follows:
  • an intermediate layer 12 flush with the outer disks 3 and 4 and having one or more turns, and another layer of conducting wire under strong tractive force is then wound on top of it.
  • the intermediate layers consisting of a highly tear-proof fabric, for example, a glass silk fabric, are provided prior to, or after their insertion with a layer or coating to improve their thermal conductivity in the impregnated and hardened state. This can be accomplished by powdering, or coating .by means of a binding agent, both sides of the fabric, completely or in parts, with a powder possessing good thermal conductivity, such as a graphite powder or a metallic powder, or by placing thin metal layers on the entire or on parts thereof.
  • the metallic layers can be applied by metal spraying, by vaporization, by a chemical process or any other suitable methods. In order to avoid eddy current losses in the magnetic pulsating field, these layers should possess a relatively high electric resistance. This can be accomplished, for example, by coating in the form of narrow strips, running in a meandering manner or parallel to each other and separated by small gaps so that the formation of closed electrical current circuits is avoided.
  • the intermediate layers can be impregnated prior to their insertion into the winding with a suitable impregnating medium, either dried only but not hardened, or also hardened.
  • a suitable impregnating medium either dried only but not hardened, or also hardened.
  • the powder possessing good thermal conductivity can, in this case, be used as filler for the impregnating medium and applied together with the medium to the fabric of the intermediate layer, or the methods described above can be followed.
  • Preimpreganted but not hardened intermediate pieces offer the advantage that the impregnating medium will already be in the proper places during the winding operation, thus facilitating, or even making unnecessary the above described impregnating process.
  • intermediate layers will not only improve the thermal conductivity of the coil but will also serve as a mechanical reinforcement of the coil, thus making it superfluous, in many instances, to provide any supports for the conductor or the coil in the form of antimagnetic, stainless steel inserts.
  • the contraction characteristics of all materials used for the construction of the unit are chosen in such manner that they will match the contractioncharacteristic of the super-conductor, with the result that no additional mechanical stresses will arise at operating temperatures.
  • preimpregnated glass fiber fabrics of approximately 50 um thickness.
  • the temporary inlays 17 which are to form the cooling ducts, are placed at the completely wound layers of conductors in the desired shape, number and location in such manner that their ends will touch the inner rim of the mold. In the case of the example shown by FIG. 1, they are inserefor this purpose through the radial slots 16 of the outer disks 3 and 4.
  • These inlays l7 consist of a material which allows their removal from themold by chemical means or by a melting-out after formation of the fully impregnated coil.
  • FIGS. 2 and 3 depict a completed, impregnated coil with the inlays removed.
  • the inlays can consist of metal with a low melting point, such as Woods metal, its melting point being higher than the impregnating and hardening temperatures but lower than the softening point of the impregnating medium being utilized.
  • a heated gas for example nitrogen. Any thin layers of resin which might have formed in front of the duct openings, are removed mechanically prior to this process.
  • cooling ducts 18 which will permit the cooling medium, for example, helium in the liquid or gaseous state, to circulate, thus cooling the coil to operating temperature and to eliminate the heat generated by the pulsating field losses intermittingly or continuously. Due to the specific arrangement of the cooling ducts, the coil mass is cooled off uniformly and only small temperature gradients will thus arise, with the result that only relatively low mechanical stresses are being generated. The presence of the large and effective heat exchange surfaces within the ducts ensures rapid cooling and efficient utilization of the enthalapy energy of the cooling medium. 7
  • FIGS. 2 and 3 depict how the dimensions, numbers and locations of the cooling ducts can be chosen as desired and in accordance with the specific requirements.
  • FIGS. 4 to 6 show sections of one species of this specific design of a coil in accordance with the invention. This coil is prepared layer by layer by using a super-conductor 20 with a rectangular profile and an electric insulation 21. Upon completion of one layer an above described intermediate piece 12 is inserted and another layer of conductor 20 is wound upon it.
  • Cooling inserts are placed when and as desired, with the inlays forming alternatingly the cooling aids 19 and the cooling ducts 18. In FIGS. 4 to 6 these inlays are not shown since it is assumed that they have been removed already.
  • FIG. provides a top view of a cooling insert. In order to keep the heat transfer resistance at a low value, the cooling aids 19 are placed in such manner that their lateral sides will touch the inlays.
  • cooling layers can be equipped with additional intermediate pieces 12, but only if conditions warrant such measure.
  • any heat so generated will be dispersed more uniformly and conducted more rapidly to the cooled cooling duct surfaces due to the improved thermal conductivities of the intermediate pieces and cooling aids.
  • Proper dimensioning and placement of the heat-conducting and cooling components makes it feasible to keep any increases in temperature being generated within desirable limits.
  • a magnetic field-producing coil comprising a plurality of layers wound from a conductor made of superconductive material, said coil being impregnated with a hardened synthetic and preferably epoxy resin, and containing a system of cooling ducts, there being disposed between adjacent winding layers a reinforcing fiber layer such as will form in conjunction with the impregnating resin a system free from eddy currents and having a high degree of mechanical stability and which has a contraction rate at the operating temperature of the coil that matches the contraction rate of the superconductive material.
  • a magnetic field-producing coil as defined in claim 4 wherein the metallic coating applied to said reinforcing fiber layer is chosen from the group consisting of copper, aluminum and graphite powder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Superconductive Dynamoelectric Machines (AREA)
  • Electromagnets (AREA)
US411219A 1972-11-06 1973-10-31 Super-conductive coils incorporating insulation between adjacent winding layers having a contraction rate matching that of the super-conductive material Expired - Lifetime US3869686A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1602972A CH552271A (de) 1972-11-06 1972-11-06 Impraegnierte wicklung aus supraleitendem leitermaterial und verfahren zur herstellung dieser wicklung mit mindestens einem kuehlkanal.

Publications (1)

Publication Number Publication Date
US3869686A true US3869686A (en) 1975-03-04

Family

ID=4413902

Family Applications (1)

Application Number Title Priority Date Filing Date
US411219A Expired - Lifetime US3869686A (en) 1972-11-06 1973-10-31 Super-conductive coils incorporating insulation between adjacent winding layers having a contraction rate matching that of the super-conductive material

Country Status (5)

Country Link
US (1) US3869686A (OSRAM)
CH (1) CH552271A (OSRAM)
DE (1) DE2258600C2 (OSRAM)
FR (1) FR2205720B1 (OSRAM)
GB (1) GB1443780A (OSRAM)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4178677A (en) * 1977-03-03 1979-12-18 Siemens Aktiengesellschaft Superconducting magnet assembly and method of making
US4277769A (en) * 1979-01-15 1981-07-07 Siemens Aktiengesellschaft Arrangement for cooling a superconduction magnet coil winding
US4384265A (en) * 1980-08-05 1983-05-17 Mitsubishi Denki Kabushiki Kaisha Superconductive coil
US4482878A (en) * 1981-01-12 1984-11-13 General Dynamics Corporation/Convair Div. Integrated conductor and coil structure for superconducting coils
US4529955A (en) * 1982-03-09 1985-07-16 Fdx Patents Holding Company, N.V. Method and apparatus for controlling coolant distribution in magnetic coils
EP0154862A1 (en) * 1984-02-24 1985-09-18 Hitachi, Ltd. Method for producing superconducting coil
US4746425A (en) * 1986-08-27 1988-05-24 Ray E. Stickler Cooling system for electromagnetic water treating device
EP0350264A1 (en) * 1988-07-05 1990-01-10 General Electric Company A superconductive quench protected coil
US4912444A (en) * 1989-02-06 1990-03-27 Westinghouse Electric Corp. Superconducting solenoid coil structure with internal cryogenic coolant passages
US4912443A (en) * 1989-02-06 1990-03-27 Westinghouse Electric Corp. Superconducting magnetic energy storage inductor and method of manufacture
US4920754A (en) * 1989-02-06 1990-05-01 Westinghouse Electric Corp. System for dumping cryogens in a superconducting solenoid installation
US20080070788A1 (en) * 2004-10-04 2008-03-20 Hans-Peter Kramer Resistive Type Super Conductive Current-Limiting Device Comprising a Strip-Shaped High-TC-Super Conductive Path
EP2458256A1 (en) * 2010-11-30 2012-05-30 Converteam Technology Ltd Insulation for a cryogenic component
WO2014118390A3 (en) * 2013-02-04 2014-10-23 Siemens Plc Superconducting magnet coil arrangement
EP2869320A1 (en) * 2013-11-01 2015-05-06 GE Energy Power Conversion UK Limited A method of forming a superconducting coil thermal bus
US20160005518A1 (en) * 2013-02-25 2016-01-07 Fujikura Ltd. High-temperature superconducting coil and superconducting device
US20220084725A1 (en) * 2018-09-07 2022-03-17 Tokamak Energy Ltd Flexible hts current leads
CN114360846A (zh) * 2022-01-24 2022-04-15 中国科学院电工研究所 一种多线圈组合的高场超导磁体及其制作方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2854520A1 (de) * 1978-12-16 1980-06-26 Bbc Brown Boveri & Cie Elektrische spule
GB2432259B (en) 2005-11-14 2008-01-30 Siemens Magnet Technology Ltd A resin-impregnated superconducting magnet coil comprising a cooling layer
US7319329B2 (en) * 2005-11-28 2008-01-15 General Electric Company Cold mass with discrete path substantially conductive coupler for superconducting magnet and cryogenic cooling circuit
US7626477B2 (en) 2005-11-28 2009-12-01 General Electric Company Cold mass cryogenic cooling circuit inlet path avoidance of direct conductive thermal engagement with substantially conductive coupler for superconducting magnet

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3363207A (en) * 1966-09-19 1968-01-09 Atomic Energy Commission Usa Combined insulating and cryogen circulating means for a superconductive solenoid
US3550050A (en) * 1967-08-17 1970-12-22 Siemens Ag Superconducting coil with cooling means
US3559126A (en) * 1968-01-02 1971-01-26 Gardner Cryogenics Corp Means to provide electrical and mechanical separation between turns in windings of a superconducting device
US3748615A (en) * 1968-05-07 1973-07-24 Siemens Ag Superconducting magnet coil

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1439487A1 (de) * 1951-01-28 1968-11-07 Siemens Ag Supraleitende Magnetspule
DE1161994B (de) * 1960-03-08 1964-01-30 Siemens Ag Fluessigkeitsgekuehlte Spulenseite, insbesondere fuer Erregerspulen von Teilchenbeschleunigern
US3283276A (en) * 1963-07-25 1966-11-01 Avco Corp Twisted superconductive winding assembly
DE1564701C3 (de) * 1966-09-03 1975-08-28 Siemens Ag, 1000 Berlin Und 8000 Muenchen Supraleitende Wicklung mit Metallbrücken
FR1519919A (fr) * 1967-03-13 1968-04-05 Siemens Ag Bobine d'électroaimant refroidie par un liquide et procédé de fabrication d'une telle bobine
FR1536969A (fr) * 1967-04-28 1968-08-23 Air Liquide Perfectionnements aux isolants thermiques soumis à des champs magnétiques variables
FR2088092B1 (OSRAM) * 1970-05-15 1980-04-04 Commissariat Energie Atomique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3363207A (en) * 1966-09-19 1968-01-09 Atomic Energy Commission Usa Combined insulating and cryogen circulating means for a superconductive solenoid
US3550050A (en) * 1967-08-17 1970-12-22 Siemens Ag Superconducting coil with cooling means
US3559126A (en) * 1968-01-02 1971-01-26 Gardner Cryogenics Corp Means to provide electrical and mechanical separation between turns in windings of a superconducting device
US3748615A (en) * 1968-05-07 1973-07-24 Siemens Ag Superconducting magnet coil

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4178677A (en) * 1977-03-03 1979-12-18 Siemens Aktiengesellschaft Superconducting magnet assembly and method of making
US4277769A (en) * 1979-01-15 1981-07-07 Siemens Aktiengesellschaft Arrangement for cooling a superconduction magnet coil winding
US4384265A (en) * 1980-08-05 1983-05-17 Mitsubishi Denki Kabushiki Kaisha Superconductive coil
US4482878A (en) * 1981-01-12 1984-11-13 General Dynamics Corporation/Convair Div. Integrated conductor and coil structure for superconducting coils
US4529955A (en) * 1982-03-09 1985-07-16 Fdx Patents Holding Company, N.V. Method and apparatus for controlling coolant distribution in magnetic coils
EP0154862A1 (en) * 1984-02-24 1985-09-18 Hitachi, Ltd. Method for producing superconducting coil
US4746425A (en) * 1986-08-27 1988-05-24 Ray E. Stickler Cooling system for electromagnetic water treating device
EP0350264A1 (en) * 1988-07-05 1990-01-10 General Electric Company A superconductive quench protected coil
US4912444A (en) * 1989-02-06 1990-03-27 Westinghouse Electric Corp. Superconducting solenoid coil structure with internal cryogenic coolant passages
US4912443A (en) * 1989-02-06 1990-03-27 Westinghouse Electric Corp. Superconducting magnetic energy storage inductor and method of manufacture
US4920754A (en) * 1989-02-06 1990-05-01 Westinghouse Electric Corp. System for dumping cryogens in a superconducting solenoid installation
US7981841B2 (en) * 2004-10-04 2011-07-19 Siemens Aktiengesellschaft Resistive type super conductive current-limiting device comprising a strip-shaped high-Tc-super conductive path
US20080070788A1 (en) * 2004-10-04 2008-03-20 Hans-Peter Kramer Resistive Type Super Conductive Current-Limiting Device Comprising a Strip-Shaped High-TC-Super Conductive Path
US9163773B2 (en) 2010-11-30 2015-10-20 Ge Energy Power Conversion Technology, Ltd. Insulation for a cryogenic component
CN103415734A (zh) * 2010-11-30 2013-11-27 Ge能源能量变换技术有限公司 用于低温元件的隔离物
WO2012072481A1 (en) * 2010-11-30 2012-06-07 Converteam Technology Ltd Insulation for a cryogenic component
EP2458256A1 (en) * 2010-11-30 2012-05-30 Converteam Technology Ltd Insulation for a cryogenic component
CN103415734B (zh) * 2010-11-30 2016-06-15 Ge能源能量变换技术有限公司 用于超导电机低温元件的隔离物及其隔离方法
US10365337B2 (en) 2013-02-04 2019-07-30 Siemens Healthcare Limited Superconducting magnet coil arrangement
WO2014118390A3 (en) * 2013-02-04 2014-10-23 Siemens Plc Superconducting magnet coil arrangement
US20160005518A1 (en) * 2013-02-25 2016-01-07 Fujikura Ltd. High-temperature superconducting coil and superconducting device
US10049800B2 (en) * 2013-02-25 2018-08-14 Fujikura Ltd. High-temperature superconducting coil and superconducting device
EP2869320A1 (en) * 2013-11-01 2015-05-06 GE Energy Power Conversion UK Limited A method of forming a superconducting coil thermal bus
US20220084725A1 (en) * 2018-09-07 2022-03-17 Tokamak Energy Ltd Flexible hts current leads
US12131837B2 (en) * 2018-09-07 2024-10-29 Tokamak Energy Ltd Flexible HTS current leads with stabiliser and terminal block
CN114360846A (zh) * 2022-01-24 2022-04-15 中国科学院电工研究所 一种多线圈组合的高场超导磁体及其制作方法
CN114360846B (zh) * 2022-01-24 2024-05-03 中国科学院电工研究所 一种多线圈组合的高场超导磁体及其制作方法

Also Published As

Publication number Publication date
FR2205720A1 (OSRAM) 1974-05-31
CH552271A (de) 1974-07-31
FR2205720B1 (OSRAM) 1979-07-20
DE2258600C2 (de) 1987-01-22
DE2258600A1 (de) 1974-05-16
GB1443780A (en) 1976-07-28

Similar Documents

Publication Publication Date Title
US3869686A (en) Super-conductive coils incorporating insulation between adjacent winding layers having a contraction rate matching that of the super-conductive material
CA1092206A (en) Superconducting composite conductor and method of manufacturing same
US3638154A (en) Braided superconductor
GB1576417A (en) Superconductors
US3626341A (en) Electromagnet structure
US4679020A (en) Superconducting solenoid and method of making same
US3743986A (en) Improved resistive envelope for a multifilament superconductor wire
Kirby et al. Hi-Lumi LHC twin aperture orbit correctors 0.5-m model magnet development and cold test
US3766502A (en) Cooling device for superconducting coils
US3730967A (en) Cryogenic system including hybrid superconductors
GB1586815A (en) Superconductor cable
US3470508A (en) Superconducting winding
US3562684A (en) Superconductive circuit
Taylor et al. A Nb 3 Sn dipole magnet reacted after winding
US3466581A (en) Winding for a magnet coil of high field strength and method of manufacturing the same
Asner et al. Development and successful testing of the first Nb 3 Sn wound, in situ-reacted, high-field superconducting quadrupole of CERN
Kim et al. Development of Short-Period ${\rm Nb} _ {3}{\rm Sn} $ Superconducting Undulators for the APS
US4980972A (en) Method of making a conductor for a high energy density hyperconducting inductor
Prodell Superconducting magnets in high energy physics
Blackburn et al. Construction of block-coil high-field model dipoles for future hadron colliders
Rossi et al. Nb3Sn Accelerator Magnets: The Early Days (1960s–1980s)
McInturff et al. Two alternate high gradient quadrupoles; an upgraded Tevatron IR and a" pipe" design
Fil’kin et al. The properties of industrial superconducting composite wires for the UNK magnets
JP2644854B2 (ja) 化合物系超電導線の製造方法
Hosoyama et al. Fabrication and testing of 1-m-long SSC model dipole magnets