AC loss measurements have been made, by an electical method, on superconducting niobium samples in the form of tubes and foils. The measured losses can depend strongly on the magnetic history of the samples and characteristic flux motion waveforms are observed when losses are enhanced by the presenc
Measuring a.c. losses of superconductors
β Scribed by C. Schmidt
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 269 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0011-2275
No coin nor oath required. For personal study only.
β¦ Synopsis
A melhod is described Io measure Ihe a.c. losses ol superl;onducling samples. The lechnique is s~milar Io a Ihermal conduclivfly measuremenl. The sample ~s placed in a vacuum vessel and coupled k') Ihe helium balh by a Ihermal res,slance. The slalionary lemperalure increase ol Ihe sample in an a.c. held is a measure ol Ihe losses. Calibrallon is done wilh Ihe pulse field otl using an ohmic', healer connecled Io Ihe sample. There is no need Ior cahbraled lemperalure sensors. Some resulls lot Ihe Euralom LCT conduclor are included in lhis Paper.
π SIMILAR VOLUMES
A comparison of the a.c. energy losses of Nb-Ti composite superconductors at various time intervals over several years is carried out. The observed decrease of eddy current losses by a factor of 1.4-3.4 is probably associated with increasing effective transverse resistivity of the matrix due to diff
In this article the results of a systematic investigation of the electromagnetic properties of sintered YBaCuO superconductors are presented. Many technological applications of type II superconductivity rely on the control and optimization of flux-line pinning mechanisms. Thus, the aim of this work