Conveners
M1PoA - Superconducting Materials and Applications
- Takanobu Kiss (Kyushu University)
- Quan Li (University of Edinburgh)
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Dr Milan Majoros (The Ohio State University)29/06/2015, 09:00ICMC-08 - Superconductor Stability and AC LossesPoster PresentationHigh energy physics (HEP) magnets require high magnetic fields, demanding the use of new superconducting materials. YBCO coated conductors are of interest in a number of possible HEP applications, including high field solenoids for muon colliders. The temperature distribution, quench, the normal zone propagation, and conductor protection are highly important in these applications. In the...Go to contribution page
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Timothy Haugan (U.S. Air Force Research Laboratory)29/06/2015, 09:00ICMC-10 - Flux Pinning and Critical CurrentPoster PresentationAddition of second-phase nanosize defects to YBa2Cu3O7-z(YBCO) superconductor thin films is known to enhance flux pinning and increase current densities (Jc). The addition of Y2BaCuO5 (Y211) was studied previously in (Y211/YBCO)N multilayer structures, and in Y211+YBCO films deposited from pie-shaped targets. This research systematically studies the effect of Y211 addition in thin films...Go to contribution page
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Timothy Haugan (U.S. Air Force Research Laboratory)29/06/2015, 09:00ICMC-10 - Flux Pinning and Critical CurrentPoster PresentationAdding nanophase defects to YBa2Cu3O7-z (YBCO) superconductor thin films is well-known to enhance flux pinning; resulting in an increase in current density (Jc). While many previous studies focused on single phase additions, the addition of several phases simultaneously shows promise in improving current density by combining different pinning mechanisms. This paper encompasses the effect of...Go to contribution page
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Pei Li (Fermi National Accelerator Laboratory)29/06/2015, 09:00ICMC-08 - Superconductor Stability and AC LossesPoster PresentationQuench initiation and growth in high-field Bi-2212 magnets can be described by 3-D heat diffusion equations and well simulated using modern finite element modeling tools. However, the usefulness of this simulation is often limited by the lack of good physical properties of important components, such as the magneto-resistivity of silver and silver alloys in a heat-treated commercial wire,...Go to contribution page
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Liyang Ye (Fermi National Accelerator Laboratory)29/06/2015, 09:00ICMC-08 - Superconductor Stability and AC LossesPoster PresentationOne of the remaining challenges for high temperature superconducting magnets is quench protection. To develop an effective quench protection system, it is important to understand the conditions that must be avoided during a quench so that the conductor is not degraded. Our previous study on Ag/Bi2212 round wires has shown that the quench degradation is a strain-driven effect and strongly...Go to contribution page
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Chris Kovacs (Ohio State University)29/06/2015, 09:00ICMC-08 - Superconductor Stability and AC LossesPoster PresentationS.S. Cored 27-strand Nb3Sn Rutherford Cable was pressed onto a U-shaped holder and kept at magnet-relevant conditions throughout reaction, instrumentation, epoxy-impregnation, and measurement. Current was injected into a single strand of the cable under applied fields up to 15 Tesla and with varying I/Ic. Then, a graphite-paste heater pulse was used to initiate current sharing. ICR and...Go to contribution page