TY - JOUR
T1 - Variable temperature total AC loss and stability characterization facility
AU - Pamidi, Sastry
AU - Nguyen, Doan
AU - Zhang, Guomin
AU - Knoll, David
AU - Trociewitz, Ulf
AU - Schwartz, Justin
N1 - Funding Information:
Manuscript received August 26, 2006. This work was supported by the Office of Electricity Delivery and Energy Reliability, U.S. Department of Energy, Award DE-FG02-05CH11292. S. Pamidi, D. Nguyen, G. Zhang and D. Knoll are with the Center for Advanced Power Systems, Florida State University, Tallahassee, FL 32310 USA (e-mail: [email protected]; [email protected]). U. Trociewitz is with the National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310 USA. J. Schwartz is with the National High Magnetic Field Laboratory, Department of Mechanical Engineering, Florida State University, Tallahassee, FL 32310 USA. Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TASC.2007.899038
PY - 2007/6
Y1 - 2007/6
N2 - The design of a versatile ac loss and stability characterization facility for high temperature superconducting materials suitable for variable temperature measurements is described. A non-metallic vessel inside a transverse field double-helix magnet acts as the measurement chamber. A cryocooler cools the samples to a target measurement temperature between 35 and 80 K. The facility is suitable for measurements on samples as long as 15 cm with ac transport current and ac background magnetic field, both at variable frequency. The facility allows for sample rotation to vary its orientation with respect to the magnetic field. Initial temperature measurements showed that the sample could be maintained at uniform temperature to ±0.5 K. AC loss measurements performed on a precursor setup, identical in concept, confirmed the suitability of the double-helix magnet design and cryocooler based cooling arrangement.
AB - The design of a versatile ac loss and stability characterization facility for high temperature superconducting materials suitable for variable temperature measurements is described. A non-metallic vessel inside a transverse field double-helix magnet acts as the measurement chamber. A cryocooler cools the samples to a target measurement temperature between 35 and 80 K. The facility is suitable for measurements on samples as long as 15 cm with ac transport current and ac background magnetic field, both at variable frequency. The facility allows for sample rotation to vary its orientation with respect to the magnetic field. Initial temperature measurements showed that the sample could be maintained at uniform temperature to ±0.5 K. AC loss measurements performed on a precursor setup, identical in concept, confirmed the suitability of the double-helix magnet design and cryocooler based cooling arrangement.
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U2 - 10.1109/TASC.2007.899038
DO - 10.1109/TASC.2007.899038
M3 - Article
AN - SCOPUS:34547443952
SN - 1051-8223
VL - 17
SP - 3179
EP - 3182
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 2
ER -