Identification of quench origins in a superconductor with acoustic emission and voltage measurements

Tsukamoto, O.; Maguire, J.; Bobrov, E.S.; Iwasa, Y.

doi:10.1063/1.92652

Cited by 69 publications

(15 citation statements)

References 2 publications

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“…An electromagnetic method involving a special preparation of the tape [126] and acoustic emissions (AE) [127][128][129][130][131][132] have also been investigated. Except AE technique, which has proven valuable and applied to diagnose the quench sources in adiabatic LTS magnets, the other approaches remain in R&D stage.…”

Section: Quench Protectionmentioning

confidence: 99%

Progresses and challenges in the development of high-field solenoidal magnets based on RE123 coated conductors

Senatore

Alessandrini

Lucarelli

et al. 2014

Supercond. Sci. Technol.

255

136

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Recent progresses in the second generation REBa 2 Cu 3 O 7 − x (RE123) coated conductor (CC) have paved a way for the development of superconducting solenoids capable of generating fields well above 23.5 T, i.e. the limit of NbTi−Nb 3 Sn-based magnets. However, the RE123 magnet still poses several fundamental and engineering challenges. In this work we review the state-ofthe-art of conductor and magnet technologies. The goal is to illustrate a close synergetic relationship between evolution of high-field magnets and advancement in superconductor technology. The paper is organized in three parts: (1) the basics of RE123 CC fabrication technique, including latest developments to improve conductor performance and production throughput; (2) critical issues and innovative design concepts for the RE123-based magnet; and (3) an overview of noteworthy ongoing magnet projects.

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Section: Quench Protectionmentioning

confidence: 99%

Progresses and challenges in the development of high-field solenoidal magnets based on RE123 coated conductors

Senatore

Alessandrini

Lucarelli

et al. 2014

Supercond. Sci. Technol.

255

136

View full text Add to dashboard Cite

show abstract

“…A multi-detection system incorporating voltage taps, pickup coils, magnetic probes, fiber optics, and acoustic sensors is foreseen [14][15][16][17][18]. During cold testing a fast data acquisition system featuring a field-programmable gate array (FPGA) [19] will be used to simultaneously acquire signals to compare the performance of the different detection methods.…”

Section: B Quench Detectionmentioning

confidence: 99%

Accelerator-Quality HTS Dipole Magnet Demonstrator Designs for the EuCARD-2 5-T 40-mm Clear Aperture Magnet

Kirby

Nugteren

Ballarino

et al. 2015

IEEE Trans. Appl. Supercond.

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Future high-energy accelerators will need very high magnetic fields in the range of 20 T. The EuCARD-2 work-package-10 is a collaborative push to take HTS materials into an accelerator quality demonstrator magnet. The demonstrator will produce 5 T standalone and between 17 T and 20 T, when inserted into the 100 mm aperture of Fresca-2 high field out-sert magnet. The HTS magnet will demonstrate the field strength and field quality that can be achieved. An effective quench detection and protection system will have to be developed to operate with the HTS superconducting materials. This paper presents a ReBCO magnet design using multi strand Roebel cable that develops a stand-alone field of 5 T in a 40 mm clear aperture and discusses the challenges associated with good field quality using this type of material. A selection of magnet designs is presented as result of a first phase of development.Presented at: ASC 2014, 10-15 August, Charlotte, USA Geneva, Switzerland February 2015 Abstract -Future high-energy accelerators will need very high magnetic fields in the range of 20 T. The EuCARD-2 workpackage-10 is a collaborative push to take HTS materials into an accelerator quality demonstrator magnet. The demonstrator will produce 5 T standalone and between 17 T and 20 T, when inserted into the 100 mm aperture of Fresca-2 high field out-sert magnet.The HTS magnet will demonstrate the field strength and field quality that can be achieved. An effective quench detection and protection system will have to be developed to operate with the HTS superconducting materials. This paper presents a ReBCO magnet design using multi strand Roebel cable that develops a stand-alone field of 5 T in a 40 mm clear aperture and discusses the challenges associated with good field quality using this type of material. A selection of magnet designs is presented as result of a first phase of development. IndexTerms-Accelerator magnet, EuCARD-2, Superconducting Magnets, HTS magnet design, quench protection, YBCO Roebel cable, ReBCO.

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“…One such promising technique is acoustic emission (AE) diagnostics that has a long history [6][7][8][9][10][11] and nowadays is used extensively for non-destructive evaluation of mechanical stability in various engineering and manufacturing fields. The first use of AE for diagnostics of quench origins in current-carrying superconductors was demonstrated in 1981 [6]. The technique was later used for diagnostics of a superconducting solenoid [7], and adopted for quench localization [8].…”

Section: Introductionmentioning

confidence: 99%

Acoustic emission during quench training of superconducting accelerator magnets

et al. 2015

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Identification of quench origins in a superconductor with acoustic emission and voltage measurements

Cited by 69 publications

References 2 publications

Progresses and challenges in the development of high-field solenoidal magnets based on RE123 coated conductors

Progresses and challenges in the development of high-field solenoidal magnets based on RE123 coated conductors

Accelerator-Quality HTS Dipole Magnet Demonstrator Designs for the EuCARD-2 5-T 40-mm Clear Aperture Magnet

Acoustic emission during quench training of superconducting accelerator magnets

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