CERN Accelerating science

CERN Document Server 8 εγγραφές βρέθηκαν  Η έρευνα πήρε 0.63 δευτερόλεπτα. 
1.
A Strategic Approach to Advance Magnet Technology for Next Generation Colliders / Ambrosio, G. (Fermilab) ; Amm, K. (Brookhaven Natl. Lab.) ; Anerella, M. (Brookhaven Natl. Lab.) ; Apollinari, G. (Fermilab) ; Arbelaez, D. (LBNL, Berkeley) ; Auchmann, B. (PSI, Villigen) ; Balachandran, S. (Natl. High Mag. Field Lab.) ; Baldini, M. (Fermilab) ; Ballarino, A. (CERN) ; Barua, S. (Natl. High Mag. Field Lab.) et al.
Colliders are built on a foundation of superconducting magnet technology that provides strong dipole magnets to maintain the beam orbit and strong focusing magnets to enable the extraordinary luminosity required to probe physics at the energy frontier. [...]
arXiv:2203.13985 ; FERMILAB-CONF-22-283-TD.
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Fermilab Library Server - eConf - Fulltext - Fulltext
2.
Process to densify Bi2Sr2CaCu2OX 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 Bi2Sr2CaCu2OX (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
3.
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 Bi2Sr2CaCu2Ox (Bi-2212) plays an important role in enabling high critical current density (Jc) in Bi-2212 round wires (RWs). Here we studied three over pressure heat treated wires with Jc varying by a factor of ∼10, all being fully dense. [...]
2021 - 11 p. - Published in : Supercond. Sci. Technol. 34 (2021) 035018
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, Jc. To minimize such grain boundary obstacles, HTS conductors such as REBa2Cu3O7x and (Bi, Pb)2Sr2Ca2Cu3O10x 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
5.
A transformative superconducting magnet technology for fields well above 30 T using isotropic round wire multifilament Bi2Sr2CaCu2O8x 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.
Full text
6.
Evidence for length-dependent wire expansion, filament dedensification and consequent degradation of critical current density in Ag-alloy sheathed Bi-2212 wires / Malagoli, A (Natl. High Mag. Field Lab.) ; Lee, P J (Natl. High Mag. Field Lab.) ; Ghosh, A K (Brookhaven) ; Scheuerlein, C (CERN) ; Di Michiel, M (ESRF, Grenoble) ; Jiang, J (Natl. High Mag. Field Lab.) ; Trociewitz, U P (Natl. High Mag. Field Lab.) ; Hellstrom, E E (Natl. High Mag. Field Lab.) ; Larbalestier, D C (Natl. High Mag. Field Lab.)
It is well known that longer Bi-2212 conductors have significantly lower critical current density (Jc) than shorter ones, and recently it has become clear that a major cause of this reduction is internal gas pressure generated during heat treatment, which expands the wire diameter and dedensifies the Bi-2212 filaments. Here we report on the length-dependent expansion of 5 to 240 cm lengths of state-of-the-art, commercial Ag alloy-sheathed Bi-2212 wire after full and some partial heat treatments. [...]
arXiv:1302.3370.- 2013 - 25 p. - Published in : Supercond. Sci. Technol. 26 (2013) 055018 Fulltext: PDF;
7.
Reduction of Gas Bubbles and Improved Critical Current Density in Bi-2212 Round Wire by Swaging / Jiang, J (Natl. High Mag. Field Lab.) ; Miao, H (Oxford Supercond. Tech., Carteret) ; Huang, Y (Oxford Supercond. Tech., Carteret) ; Hong, S (Oxford Supercond. Tech., Carteret ; HJC Enterprise, New Providence) ; Parrell, J (Oxford Supercond. Tech., Carteret) ; Scheuerlein, C (CERN) ; Di Michiel, M (ESRF, Grenoble) ; Ghosh, A (Brookhaven) ; Trociewitz, U (Natl. High Mag. Field Lab.) ; Hellstrom, E (Natl. High Mag. Field Lab.) et al.
Bi-2212 round wire is made by the powder-in-tube technique. An unavoidable property of powder-in-tube conductors is that there is about 30% void space in the as-drawn wire. [...]
CERN-ATS-2013-030.- Geneva : CERN, 2013 - Published in : IEEE Trans. Appl. Supercond. 23 (2013) 6400206 Fulltext: PDF;
In : Applied Superconductivity Conference 2012: The Next Century of Superconductivity, Portland, OR, USA, 7 - 12 Oct 2012
8.
The Bi-2212 conductor and magnet program at the National High Magnetic Field Laboratory / Larbalestier, D (Natl. High Mag. Field Lab.) ; Hellstrom, E (Natl. High Mag. Field Lab.) ; Jiang, J (Natl. High Mag. Field Lab.) ; Kametani, F (Natl. High Mag. Field Lab.) ; LoSchiavo, M (Natl. High Mag. Field Lab.) ; Myers, D (Natl. High Mag. Field Lab.) ; Schwartz, J (Natl. High Mag. Field Lab.) ; Shen, T (Natl. High Mag. Field Lab.) ; Trociewitz, U (Natl. High Mag. Field Lab.)
The NHMFL has had a long running program to develop Bi2Sr2CaCu2Ox (Bi2212) for high field magnets. The recent development of round wire Bi2212 (RW2212) has strengthened the effort to develop solenoid magnets with fields substantially greater than can be achieved with Nb3Sn. [...]
CERN, 2009 Published version from CERN: PDF;
In : Workshop on Accelerator Magnet Superconductors, Design and Optimization, CERN, Geneva, Switzerland, 19 - 23 May 2008, pp.136-138 (CERN-2009-001)

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1 Trociewitz, U.
1 Trociewitz, U.P.
2 Trociewitz, Ulf P
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