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Journal Articles

Mechanical properties of high manganese austenitic stainless steel JK2LB for ITER central solenoid jacket material

Saito, Toru; Kawano, Katsumi; Yamazaki, Toru; Ozeki, Hidemasa; Isono, Takaaki; Hamada, Kazuya*; Devred, A.*; Vostner, A.*

Physics Procedia, 67, p.1016 - 1021, 2015/07

 Times Cited Count:1 Percentile:45.55

Journal Articles

Benchmarking of mechanical test facilities related to ITER CICC steel jackets

Vostner, A.*; Pong, I.*; Bessette, D.*; Devred, A.*; Sgobba, S.*; Jung, A.*; Weiss, K.-P.*; Jewell, M. C.*; Liu, S.*; Yu, W.*; et al.

IEEE Transactions on Applied Superconductivity, 23(3), p.9500705_1 - 9500705_5, 2013/06

 Times Cited Count:11 Percentile:41.95(Engineering, Electrical & Electronic)

The ITER Cable-In-Conduit Conductor (CICC) used in the superconducting magnet system consists of a cable made of 300 to 1440 strands housed in a stainless steel tube (a.k.a. jacket or conduit). There are circular, square, as well as circle-in-square jackets, made of either a very low carbon AISI 316LN grade stainless steel or a high Mn austenitic stainless steel developed for ITER called JK2LB. Selected mechanical properties of the base material and weld joint were tested at room temperature and/or cryogenic temperatures ($$<$$ 7 K). The Domestic Agencies (DAs) reference laboratories and the ITER-IO appointed reference laboratories, CERN and Karlsruhe Institute of Technology (KIT) performed mechanical tests. This paper will compare the test results (e.g. elongation to failure) from different laboratories.

Journal Articles

First results of AC loss test on ITER TF conductors with transverse load cycling

Miyoshi, Yasuyuki*; Ronando, G.*; Vostner, A.*; Nabara, Yoshihiro; Nijhuis, A.*

IEEE Transactions on Applied Superconductivity, 22(3), p.4804304_1 - 4804304_4, 2012/06

 Times Cited Count:4 Percentile:66.94(Engineering, Electrical & Electronic)

no abstracts in English

Journal Articles

Status of ITER conductor development and production

Devred, A.*; Backbier, I.*; Bessette, D.*; Bevillard, G.*; Gardner, M.*; Jewell, M.*; Mitchell, N.*; Pong, I.*; Vostner, A.*

IEEE Transactions on Applied Superconductivity, 22(3), p.4804909_1 - 4804909_9, 2012/06

 Times Cited Count:106 Percentile:2.46(Engineering, Electrical & Electronic)

The ITER magnet system is made up of 4 sets of coils: 18 Toroidal Field (TF) coils, 6 Poloidal Field (PF) coils, 6 Central Solenoid (CS) coils and 9 pairs of Correction Coils (CC's). All of them are wound from Cable-In-Conduit Conductors (CICC's) made up of superconducting and copper strands assembled into a multistage, rope-type cable inserted into a conduit of butt-welded austenitic steel tubes. The TF and CS conductors call for about 500 tons of Nb$$_3$$Sn strands while the PF and CC conductors need around 250 tons of NbTi strands. The required amount of Nb$$_3$$Sn strands far exceeds pre-existing industrial capacity and calls for a significant worldwide production scale up. After recalling the technical requirements defined by the ITER Internal Organization (IO), we detail the in-kind procurement sharing of the various conductor types among the 6 ITER Domestic Agencies (DA's) involved: China, Europe, Japan, South Korea, Russia, and the United States, and we present a status of ongoing productions. The most advanced production is that for the TF coils, where all 6 DAs have qualified suppliers and have already registered more than 30% of the expected production data into the web-based ITER Conductor Database developed by the IO.

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