Development of high-strength and high-RRR aluminum-stabilized superconductor for the ATLAS thin solenoid

Wada, K.; Meguro, S.; Sakamoto, H.; Shimada, Taihei; Nagasu, Y.; Inoue, I.; Tsunoda, Kei; Endo, S.; Yamamoto, A.; Makida, Y.; Tanaka, Kenichi; Doi, Y.; Kondo, T.

doi:10.1109/77.828251

Cited by 29 publications

(31 citation statements)

References 4 publications

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“…For the coil to be this thin, it is wound with a single layer of specially developed high-strength aluminum stabilized NbTi superconductor [1]. The solenoid coil is mounted on the inner warm vessel of the Barrel Cryostat by 23 triangular glass [2] with the services connection side (chimney) fixed while the opposite side can slide in axial direction [3].…”

Section: Introductionmentioning

confidence: 99%

Ultimate Performance of the ATLAS Superconducting Solenoid

Ruber

Makida

Kawai

et al. 2007

IEEE Trans. Appl. Supercond.

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Abstract-A 2 tesla, 7730 ampere, 39 MJ, 45 mm thin superconducting solenoid with a 2.3 meters warm bore and 5.3 meters length, is installed in the center of the ATLAS detector and successfully commissioned. The solenoid shares its cryostat with one of the detector's calorimeters and provides the magnetic field required for the inner detectors to accurately track collision products from the LHC at CERN. After several years of a stepwise construction and test program, the solenoid integration 100 meters underground in the ATLAS cavern is completed. Following the on-surface acceptance test, the solenoid is now operated with its final cryogenic, powering and control system. A re-validation of all essential operating parameters is completed. The performance and test results of underground operation are reported and compared to those previously measured.

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Section: Introductionmentioning

confidence: 99%

Ultimate Performance of the ATLAS Superconducting Solenoid

Ruber

Makida

Kawai

et al. 2007

IEEE Trans. Appl. Supercond.

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“…Preferentially, the temperature is kept under 100 K to avoid localized thermal dilatation and thus dangerous mechanical stress. In the case of the aluminium stabilized Nb-Ti BESS coil (Balloon-Borne Experiment with a Superconducting Solenoid Magnet Spectrometer) [26] which currently owns the specific energy world record for a superconducting coil, the aluminium plays a role both for stabilization and mechanical structure [27]. In the case of standard REBCO tapes unfortunately, Hastelloy ® or other NiW alloys are used for the substrate, and they are very poor electrical conductors.…”

Section: Protectionmentioning

confidence: 99%

Superconducting magnetic energy storage and superconducting self-supplied electromagnetic launcher

Cicéron

Badel

Tixador

2017

Eur. Phys. J. Appl. Phys.

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Abstract. Superconductors can be used to build energy storage systems called Superconducting Magnetic Energy Storage (SMES), which are promising as inductive pulse power source and suitable for powering electromagnetic launchers. The second generation of high critical temperature superconductors is called coated conductors or REBCO (Rare Earth Barium Copper Oxide) tapes. Their current carrying capability in high magnetic field and their thermal stability are expanding the SMES application field. The BOSSE (Bobine Supraconductrice pour le Stockage d'Energie) project aims to develop and to master the use of these superconducting tapes through two prototypes. The first one is a SMES with high energy density. Thanks to the performances of REBCO tapes, the volume energy and specific energy of existing SMES systems can be surpassed. A study has been undertaken to make the best use of the REBCO tapes and to determine the most adapted topology in order to reach our objective, which is to beat the world record of mass energy density for a superconducting coil. This objective is conflicting with the classical strategies of superconducting coil protection. A different protection approach is proposed. The second prototype of the BOSSE project is a small-scale demonstrator of a Superconducting Self-Supplied Electromagnetic Launcher (S3EL), in which a SMES is integrated around the launcher which benefits from the generated magnetic field to increase the thrust applied to the projectile. The S3EL principle and its design are presented. Motivation SMES principle [1]Superconductors have the property to lose their electrical resistivity when they are cooled under a critical temperature T C . Even if energy dissipation occurs in a superconductor submitted to variable electrical current or magnetic induction (B), there is no energy dissipation in a steady state. If a superconducting winding is supplied, then short-circuited current is not dissipated by Joule effect and magnetic energy is conserved almost indefinitely. This is the principle of inductive storage with superconductors, generally called SMES (Superconducting Magnetic Energy Storage).The stored energy E mag can be expressed as a function of inductance L and current I or as the integral over space of the product of magnetic field H by induction B, following (1):Once the SMES has been charged and short-circuited, the energy is available and can be used by opening the short circuit and connecting the SMES to a load. It can be connected to the load either directly as in the case of direct supply of an electromagnetic launcher, or through a voltage adaptation system if the discharge has to be controlled. SMES have low energy density compared to batteries, but high power densities. Furthermore, they can have high cycling yield (97%), with the cycling yield being defined as the recovered energy divided by the energy provided to the SMES, including the energy spent to cool the system, after one cycle. They are direct electricity storage devices such as capacitors. Nevertheless, ...

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“…A high-strength Al stabilizer is required to withstand the Lorentz forces during the magnet operation, while minimizing the cold mass thickness. The necessary stabilizer strength and RRR were achieved during the ATLAS cable R&D. The developed precipitation hardening Al-0.1wt%Ni alloy strengthened with the cold work [8] is the baseline choice for the PS cable.…”

Section: Cable and Insulationmentioning

confidence: 99%

Conceptual design of the Mu2e production solenoid cold mass

Kashikhin¹,

Ambrosio²,

Andreev³

et al. 2012

AIP Conference Proceedings

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The Muon-to-Electron conversion experiment (Mu2e), under development at Fermilab, seeks to detect direct muon to electron conversion to provide evidence for a process violating muon and electron lepton number conservation that cannot be explained by the Standard Model of particle physics.The required magnetic field is produced by a series of superconducting solenoids. This paper describes the conceptual design of the 5 T, 4 m long solenoid cold mass with 1.67 m bore with the emphasis on the magnetic, radiation and thermal analyses.

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Development of high-strength and high-RRR aluminum-stabilized superconductor for the ATLAS thin solenoid

Cited by 29 publications

References 4 publications

Ultimate Performance of the ATLAS Superconducting Solenoid

Ultimate Performance of the ATLAS Superconducting Solenoid

Superconducting magnetic energy storage and superconducting self-supplied electromagnetic launcher

Conceptual design of the Mu2e production solenoid cold mass

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