Progress of the insert coil for the US-NHMFL multi-shot pulse magnet

Swenson, Charles A.; Marshall, William; Gavrilin, A.V.; Han, Ke; Schillig, J.B.; Sims, J.R.; Schneider-Muntau, H.J.

doi:10.1016/j.physb.2004.01.082

Cited by 38 publications

(14 citation statements)

References 8 publications

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“…It is also clear from this kind of simulations, that the most practical way to reach magnetic fields above 90 T is a multi-coil configuration with the possibility to use different wires and separate energy suppliers for each subcoil [13]- [17]. We use a dual-coil configuration, as the simplest option to go beyond the 90 T level.…”

Section: T Pulsed Magnetmentioning

confidence: 99%

Status of the Pulsed-Magnet-Development Program at the Dresden High Magnetic Field Laboratory

Жерлицын¹,

Wustmann²,

Herrmannsdörfer³

et al. 2012

IEEE Trans. Appl. Supercond.

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The Dresden High Magnetic Field Laboratory (HLD) is a pulsed-field user facility which offers to researches a variety of experimental techniques combined with non-destructive pulsed magnetic fields. Recently a new, 9.5 MJ dual-coil magnet has been commissioned. This magnet has achieved magnetic field of 91.4 T in a 16 mm bore and it is available for users now. In this paper, we report on some key upgrades in the magnet design which have led to breaking the 90 T limit at the HLD. Further possible design improvements are discussed. In addition, we share our operational experience obtained with the pulsed magnets.Index Terms-Magnet design and construction, non-destructive pulsed magnet.

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Section: T Pulsed Magnetmentioning

confidence: 99%

Status of the Pulsed-Magnet-Development Program at the Dresden High Magnetic Field Laboratory

Жерлицын¹,

Wustmann²,

Herrmannsdörfer³

et al. 2012

IEEE Trans. Appl. Supercond.

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“…The design is novel because of the cooling manifold between the nested solenoids and an integral coaxial lead. The 65 T inner coils "poly-layer" construction methodology was developed in conjunction with the 100 T insert design [4]. The features defining the nested two-coil assembly are a template for future user magnet coils.…”

Section: T 15 MM Bore Gap Cooled Magnetmentioning

confidence: 99%

Pulse Magnet Development Program at NHMFL

Swenson

Marshall

Miller

et al. 2004

IEEE Trans. Appl. Supercond.

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In 1989, the NHMFL Pulsed Magnetic Field User Facility was set up at the Los Alamos National Laboratory. Two programs were initially conceived: 1) The construction of a 60 T long pulse magnet energized by the 600 MJ, 540 MW generator, and 2) a high field magnet program for the 1.6 MJ/32 mF capacitor bank with an operating range of 10 kV. These magnets are designed and built at the NHMFL. Our pulse coil development has its roots in the work accomplished by the group in Leuven which served as a starting point for our technical development programs. After having established the technology, we have focused our efforts on increased reliability. Our present user magnet design is based upon the use of distributed MP35N and Zylon reinforcement. These 60 T short pulse (5.7 ms pulse rise time) and 50 T mid-pulse (40 ms pulse rise time) magnets have become the "workhorse" magnets of the Pulsed Magnetic Field User Facility since the failure of the first 60 T long pulse magnet. Coil longevities of 1500 shots, of which half are at full field, are becoming the standard.Presently, the short pulse group is engaged in several programs to increase the science opportunities at our user facility. The development activities encompass fast-cool magnet systems, allowing a shot at least every 20 minutes, the production of a new generation of user coils for higher fields, and a 100 T insert. We present a technical overview of our development programs and new coil designs, including materials development and characterization, identifying those areas critical to progress toward even more reliable and stronger magnetic fields.Index Terms-High magnetic field, pulsed magnet.

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“…It is therefore necessary to develop, characterize and understand the mechanical and microstructure of new and improved materials that have high strength and high electrical conductivity [2][3][4][5][6][7][8]. It is recognized that high tensile strength is desired to resist Lorentz forces inherent with high fields while high conductivity limits the Joule heating [9].…”

Section: Introductionmentioning

confidence: 99%

Cryogenic properties of dispersion strengthened copper for high magnetic fields

Toplosky¹,

Han²,

Walsh³

et al. 2014

AIP Conference Proceedings

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Abstract. Cold deformed copper matrix composite conductors, developed for use in the 100 tesla multi-shot pulsed magnet at the National High Magnetic Field Laboratory (NHMFL), have been characterized. The conductors are alumina strengthened copper which is fabricated by cold drawing that introduces high dislocation densities and high internal stresses. Both alumina particles and high density of dislocations provide us with high tensile strength and fatigue endurance. The conductors also have high electrical conductivities because alumina has limited solubility in Cu and dislocations have little scattering effect on conduction electrons. Such a combination of high strength and high conductivity makes it an excellent candidate over other resistive magnet materials. Thus, characterization is carried out by tensile testing and fully reversible fatigue testing. In tensile tests, the material exceeds the design criteria parameters. In the fatigue tests, both the load and displacement were measured and used to control the amplitude of the tests to simulate the various loading conditions in the pulsed magnet which is operated at 77 K in a non-destructive mode. In order to properly simulate the pulsed magnet operation, strain-controlled tests were more suitable than load controlled tests. For the dispersion strengthened coppers, the strengthening mechanism of the aluminum oxide provided better tensile and fatigue properties over convention copper.

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Progress of the insert coil for the US-NHMFL multi-shot pulse magnet

Cited by 38 publications

References 8 publications

Status of the Pulsed-Magnet-Development Program at the Dresden High Magnetic Field Laboratory

Status of the Pulsed-Magnet-Development Program at the Dresden High Magnetic Field Laboratory

Pulse Magnet Development Program at NHMFL

Cryogenic properties of dispersion strengthened copper for high magnetic fields

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