Author: Evangelou, E.
Paper Title Page
TUP169 The Effect of Axial Stress on YBCO Coils 1139
 
  • W. Sampson, M. Anerella, J.P. Cozzolino, R.C. Gupta, Y. Shiroyanagi
    BNL, Upton, Long Island, New York, USA
  • E. Evangelou
    The Bronx High School of Science, Bronx, New York, USA
 
  Funding: This work is supported by the U.S. Department of Energy under Contract No. DE-AC02-98CH10886.
A spiral wound “pancake” coil made from YBCO coated conductor has been stressed to a pressure of 100MPa in the axial direction at 77K. In this case axial refers to the coil so that the force is applied to the edge of the conductor. The effect on the critical current was small and completely reversible. Repeatedly cycling the pressure had no measureable permanent effect on the coil. The small current change observed exhibited a slight hysteretic behaviour during the loading cycle.