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CERN Document Server Sök i 6 journaler efter:  Sökningen tog 0.72 sekunder. 
1.
Process to densify Bi$_2$Sr$_2$CaCu$_2$O$_X$ round wire with overpressure before coil winding and final overpressure heat treatment / Matras, M R (Florida State U. ; CERN) ; Jiang, J (Florida State U.) ; Trociewitz, U P (Florida State U.) ; Larbalestier, D C (Florida State U.) ; Hellstrom, E E (Florida State U.)
Overpressure (OP) processing of wind-and-react Bi$_2$Sr$_2$CaCu$_2$O$_X$ (2212) round wire compresses the wire to almost full density, decreasing its diameter by about 4% without change in wire length and substantially raising its JC. However, such shrinkage can degrade coil winding pack density and magnetic field homogeneity [...]
2020 - Published in : Supercond. Sci. Technol. 33 (2020) 025010
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2.
Correlation of critical current density to quasi-biaxial texture and grain boundary cleanliness in fully dense Bi-2212 wires / Oloye, T A (Florida State U.) ; Matras, M (CERN) ; Jiang, J (Florida State U.) ; Hossain, S I (Florida State U.) ; Su, Y (Florida State U.) ; Trociewitz, U P (Florida State U.) ; Hellstrom, E E (Florida State U. ; Florida A-M) ; Larbalestier, D C (Florida State U. ; Florida A-M) ; Kametani, F (Florida State U. ; Florida A-M)
The distinctive quasi-biaxial texture of Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{x}$ (Bi-2212) plays an important role in enabling high critical current density (J$_{c}$) in Bi-2212 round wires (RWs). Here we studied three over pressure heat treated wires with J$_{c}$ varying by a factor of ∼10, all being fully dense. [...]
2021 - 11 p. - Published in : Supercond. Sci. Technol. 34 (2021) 035018
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3.
Measurement of splice resistance and normal zone propagation velocity in REBCO tapes for the Superconducting Link of HL-LHC / Matras, M (CERN) ; Fleiter, J (CERN) ; Ballarino, A (CERN)
The Superconducting Link (SC-Link) being developed at CERN in the context of the LHC High-Luminosity upgrade (HL-LHC) will supply the current to superconducting magnets of the HL-LHC Inner Triplets and Matching Sections. The SC-Link consists of MgB$_2$ highcurrent cables, and it includes high temperature superconducting REBCO cables making the electrical transition between the MgB$_2$ and the current leads. [...]
IOP, 2020 - 10 p. - Published in : J. Phys.: Conf. Ser. 1559 (2020) 012129 Fulltext: PDF;
In : 14th European Conference on Applied Superconductivity, Glasgow, United Kingdom, 1 - 5 Sep 2019, pp.012129
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4.
Isotropic round-wire multifilament cuprate superconductor for generation of magnetic fields above 30 T / Larbalestier, D C (Natl. High Mag. Field Lab.) ; Jiang, J (Natl. High Mag. Field Lab.) ; Trociewitz, U P (Natl. High Mag. Field Lab.) ; Kametani, F (Natl. High Mag. Field Lab.) ; Scheuerlein, C (CERN) ; Dalban-Canassy, M (Natl. High Mag. Field Lab.) ; Matras, M (Natl. High Mag. Field Lab.) ; Chen, P (Natl. High Mag. Field Lab.) ; Craig, N C (Natl. High Mag. Field Lab.) ; Lee, P J (Natl. High Mag. Field Lab.) et al.
Magnets are the principal market for superconductors, but making attractive conductors out of the high-temperature cuprate superconductors (HTSs) has proved difficult because of the presence of high-angle grain boundaries that are generally believed to lower the critical current density, J$_c$. To minimize such grain boundary obstacles, HTS conductors such as REBa$_2$Cu$_3$O$_{7−x}$ and (Bi, Pb)$_2$Sr$_2$Ca$_2$Cu$_3$O$_{10−x}$ are both made as tapes with a high aspect ratio and a large superconducting anisotropy. [...]
2014 - 7 p. - Published in : Nature Mater. 13 (2014) 375-381 External link: ADSABS
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5.
Strain induced irreversible critical current degradation in highly dense Bi-2212 round wire / Bjoerstad, R (CERN) ; Scheuerlein, C (CERN) ; Rikel, M.O. (Nexans SuperConductors GmbH) ; Ballarino, A (CERN) ; Bottura, L (CERN) ; Jiang, J (Florida State U.) ; Matras, M (Florida State U.) ; Sugano, M (KEK, Tsukuba) ; Hudspeth, J (ESRF, Grenoble) ; Di Michiel, M (ESRF, Grenoble)
The strain induced critical current degradation of overpressure processed straight Bi 2212/Ag wires has been studied at 77 K in self-field. For the first time superconducting properties, lattice distortions, composite wire stress and strain have been measured simultaneously in a high energy synchrotron beamline. [...]
CERN-ACC-2015-0048.- Geneva : CERN, 2015 - Published in : Supercond. Sci. Technol. 28 (2015) 062002 Fulltext: PDF;
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6.
A transformative superconducting magnet technology for fields well above 30 T using isotropic round wire multifilament $Bi_2Sr_2CaCu_2O_{8-x}$ conductor / Larbalestier, D.C. (Natl. High Mag. Field Lab.) ; Jiang, J. (Natl. High Mag. Field Lab.) ; Trociewitz, U.P. (Natl. High Mag. Field Lab.) ; Kametani, F. (Natl. High Mag. Field Lab.) ; Scheuerlein, C. (CERN) ; Dalban-Canassy, M. (Natl. High Mag. Field Lab.) ; Matras, M. (Natl. High Mag. Field Lab.) ; Chen, P. (Natl. High Mag. Field Lab.) ; Craig, N.C. (Natl. High Mag. Field Lab.) ; Lee, P.J. (Natl. High Mag. Field Lab.) et al.
We report here that magnetic fields of almost 34 T, far above the upper 24 T limit of Nb3Sn, can be generated using a multifilament round wire conductor made of the high temperature cuprate superconductor Bi2Sr2CaCu2O8-x (Bi-2212). [...]
arXiv:1305.1269. - 2013. - 14 p.
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1 Matras, M R
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