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Preparation of the ITER poloidal field conductor insert (PFCI) test
Zanino, R.,Egorov, S.,Kim, K.,Martovetsky, N.,Nunoya, Y.,Okuno, K.,Salpietro, E.,Sborchia, C.,Takahashi, Y.,Weng, P.,Bagnasco, M.,Richard, L.S.,Polak, M.,Formisano, A.,Zapretilina, E.,Shikov, A.,Veder IEEE 2005 IEEE transactions on applied superconductivity Vol.15 No.2
The Poloidal Field Conductor Insert (PFCI) of the International Thermonuclear Experimental Reactor (ITER) has been designed in the EU and is being manufactured at Tesla Engineering, UK, in the frame of a Task Agreement with the ITER International Team. Completion of the PFCI is expected at the beginning of 2005. Then, the coil shall be shipped to JAERI Naka, Japan, and inserted into the bore of the ITER Central Solenoid Model Coil, where it should be tested in 2005 to 2006. The PFCI consists of a NbTi dual-channel conductor, almost identical to the ITER PF1 and PF6 design, ∼45 m long, with a 50 mm thick square stainless steel jacket, wound in a single-layer solenoid. It should carry up to 50 kA in a field of ∼6 T, and it will be cooled by supercritical He at ∼4.5 K and ∼0.6 MPa. An intermediate joint, representative of the ITER PF joints and located at relatively high field, will be an important new item in the test configuration with respect to the previous ITER Insert Coils. The PFCI will be fully instrumented with inductive and resistive heaters, as well as with voltage taps, Hall probes, pick-up coils, temperature sensors, pressure gauges, strain and displacement sensors. The test program will be aimed at DC and pulsed performance assessment of conductor and intermediate joint, AC loss measurement, stability and quench propagation, thermal-hydraulic characterization. Here we give an overview of the preparatory work toward the test, including a review of the coil manufacturing and of the available instrumentation, a discussion of the most likely test program items, and a presentation of the supporting modeling and characterization work performed so far.
Pong, I.,Jewell, M. C.,Bordini, B.,Oberli, L.,Liu, S.,Long, F.,Boutboul, T.,Readman, P.,Park, S.-H,Park, P.-Y,Pantsyrny, V.,Tronza, V.,Martovetsky, N.,Lu, J.,Devred, A. IEEE 2012 IEEE transactions on applied superconductivity Vol.22 No.3
<P>The ITER machine will require approximately 250 tons of NbTi strands and 500 tons of Nb<SUB>3</SUB>Sn strands. NbTi will be used in the Poloidal Field (PF) coils, Correction Coils (CC) and feeder busbars, whereas Nb<SUB>3</SUB>Sn will be used in the Central Solenoid (CS) and Toroidal Field (TF) coils. The large amount of superconducting strands needed requires worldwide procurement, involving suppliers from six of the seven ITER Domestic Agencies (DAs). To ensure reliable test results, it is necessary to benchmark the test facilities at each supplier and at each DA reference laboratory for physical and superconducting properties measurement, as well as sample preparation techniques. Following previous benchmarking efforts related to ITER procurement in the mid-1990's and to supplier and DA laboratory qualification performed on bronze route Nb<SUB>3</SUB>Sn strands in 2009, we report here the latest rounds on internal tin Nb<SUB>3</SUB>Sn and NbTi strands. Ten participants from five DAs (China, EU, South Korea, Russia, and the U.S.) together with CERN (the ITER Organisation's reference laboratory) took part in the benchmarking of internal tin Nb<SUB>3</SUB>Sn strands, and six participants from China and Russia, plus CERN, participated in the benchmarking of NbTi strands.</P>
Predictive Analysis of the ITER Poloidal Field Conductor Insert (PFCI) Test Program
Zanino, R.,Astrov, M.,Bagnasco, M.,Baker, W.,Bellina, F.,Ciazynski, D.,Egorov, S.,Kim, K.,Kvitkovic, J.L.,Lacroix, B.,Martovetsky, N.,Mitchell, N.,Muzzi, L.,Nunoya, Y.,Okuno, K.,Polak, M.,Ribani, P.L. IEEE 2007 IEEE transactions on applied superconductivity Vol.17 No.2
<P>In this paper, we discuss the predictive analysis performed in support of the test program of the International Thermonuclear Experimental Reactor (ITER) poloidal field conductor insert (PFCI). A subset of the test program items was considered, with particular emphasis on DC performance and AC losses. The results and implications of the comparison of selected predictions from different laboratories will be presented.</P>