High temperature superconductors for the ITER magnet system and beyond
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We present experimental results which test whether diffusion engineering can increase the energy resolution of a single-photon superconducting tunnel-junction spectrometer. When a UV photon is absorbed in superconducting Al, it creates an excess number of ...
JORDI (JOint Resistance DIstribution), a dedicated test facility for the measurement of contact resistance distribution in full-size, ITER type conductor terminations, has been successfully commissioned at CRPP. In contrast to earlier attempts, where the c ...
Worldwide programs aimed at developing materials for future fusion plants are presently concentrating on reduced activation ferritic/martensitic (RAFM) steels. In Europe, a Fusion Long Term Programme is being carried out under the coordination of European ...
The contact resistance distribution among the current-carrying elements of three ITER conductor terminations is measured in the JORDI (JOint Resistance DIstribution) test facility at CRPP. One sample is based on Nb3Sn strands, the other two are NbTi cable- ...
Diffusion engineering has been proposed as an approach to increase the collected charge and energy resolution of a single-photon superconducting tunnel junction (STJ) spectrometer. We present new experimental results confirming this approach. When a photon ...
We present the results of a systematic study of the temperature-dependent resistivity and of T-c of a single crystal MgB2 sample as a function of point defect concentration. We have found linear, albeit weak, correlation between the decreasing superconduct ...
For the superconducting magnet system of the International Thermonuclear Experimental Reactor, ITER, 60 current leads for a total current of more than 2500 kA are needed. To reduce the resultant large refrigerator load at 4.5 K, High Temperature Supercondu ...
Scientific conference paper We report thermopower and electrical resistance measurements of the high-temperature superconductor Bi2Sr2Ca1-xPrxCu2O8+delta (0 < x < 1) in a wide temperature range from 600 K to superconducting transition temperature (critical ...
This thesis is motivated by one of the largest markets: aviation. This market, in which competition and investments are extraordinary, requires constant technical improvements in order to increase its competitiveness. Jet engines have an important influenc ...
In the frame of the European Fusion Technology Programme, the Forschungszentrum Karlsruhe and the CRPP Villigen have designed and built a 70 kA current lead for the ITER TF Coils using High Temperature Superconductors (HTS). At the beginning of 2004 the HT ...
