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SUMMARY:Applied (High Temperature) Superconductivity  (1/5)
DTSTART;VALUE=DATE-TIME:20120625T090000Z
DTEND;VALUE=DATE-TIME:20120625T100000Z
DTSTAMP;VALUE=DATE-TIME:20130525T120719Z
UID:indico-event-158073@cern.ch
DESCRIPTION:This series of academic training lectures will introduce the k
 ey topics related to the future of superconducting magnet technology based
  upon “high temperature superconductors” which have the potential to g
 enerate much higher magnetic fields than NbTi and Nb3Sn. \n\nThe series is
  comprised of five lectures. The first two will introduce some of the basi
 c physics of the phenomenon of superconductivity\, including the discovery
  of superconductivity\, the difference between type I and type II supercon
 ductors\, the thermodynamics of the superconducting state\, magnetic vorti
 ces\, magnetic flux pinning\, the Bean critical state model and magnetizat
 ion. The physics discussion will not focus on detailed quantitative rigor\
 , but instead on conceptualization of the behavior. \n\nThe third lecture 
 will introduce the technical superconducting materials that are used in co
 nductors and magnets. After a brief overview of NbTi and Nb3Sn\, the focus
  of this lecture will be on the emerging high temperature superconductors 
 which have potential for future high energy physics magnets: (RE)BCO coate
 d conductors and Bi2212 round wires. Each of these materials will be intro
 duced\, including their crystal structures (and how their intrinsic anisot
 ropy influences their behaviors)\, how they are formed\, and the challenge
 s that must be overcome for them to become useful in high field magnets. A
 lthough these two materials have some similarities\, from the perspective 
 of technical challenges they are quite different\; these differences will 
 be presented and explored. Future directions that are likely to lead to si
 gnificant improvements will also be presented.\n\nThe fourth lecture will 
 focus primarily on the how technical superconductors respond to mechanical
  stress and stain\, i.e.\, their electromechanical behavior. Again\, after
  a brief overview of the behavior of of NbTi and Nb3Sn\, the focus will be
  on (RE)BCO and Bi2212 conductors. For each material\, their known behavio
 r will be presented\, including the performance limiting failure modes\, t
 he underlying causes of degradation and failure\, and future directions th
 at may lead to significant improvements. \n\nThe final lecture will discus
 s quench protection issues for HTS magnets. In this lecture\, the focus wi
 ll be on the unique challenges of HTS magnets\, including the very slow qu
 ench propagation velocity and the uncertain failure limits. Potential solu
 tions and current research directions will be discussed.\n\nJustin Schwart
 z\nKobe Steel Distinguished Professor\nHead\, Department of Materials Scie
 nce and Engineering\nNorth Carolina State University - USA\n\nhttp://indic
 o.cern.ch/conferenceDisplay.py?confId=158073
LOCATION:CERN Kjell Johnsen Auditorium
URL:http://indico.cern.ch/conferenceDisplay.py?confId=158073
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