ITER R&amp;D: Magnets: Conductor and Joint Development

Tsuji, Hiroshi; Егоров, С. А.; Minervini, J.V.; Mitchell, N.; Okuno, K.; Salpietro, E.

doi:10.1016/s0920-3796(01)00196-x

Cited by 21 publications

(12 citation statements)

References 11 publications

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“…Notice that the simulation is capable in all cases to reproduce both the quantitative features of the charac- 1 The time constant for current redistribution in a model coil cable from an inductive (and usually uniform) distribution after the current ramp up to a resistive (and possibly non-uniform distribution) is several thousands of seconds between petals, due to the wrappings [35]. The redistribution is often accompanied by a change in joint resistance [34] whose presence is a clear indication of non-uniform currents.…”

Section: Tests At 46 Kamentioning

confidence: 96%

“…The International Thermonuclear Experimental Reactor (ITER) central solenoid model coils [1,2] consist of the Central Solenoid Model Coil (CSMC) and three associated insert coils, the Central Solenoid Insert (CSI) and the Toroidal Field Insert (TFI), which both use a Nb 3 Sn conductor, and the Aluminium Insert (ALI), which uses a Nb 3 Al conductor. The CSMC and associated inserts produce a high field ($13 T) and were designed to qualify the full-size ITER conductors at and beyond the ITER operating conditions, by providing a long length of conductor at high field.…”

Section: Introductionmentioning

confidence: 99%

“…The cable is built up typically in a 3 Â 4 Â 4 Â 4 Â 6 combination of subunits, with the basic starting unit a triplet of three strands and the final cable made up of six sub-stages twisted around a central channel, each with a thin wrap of Inconel foil [1]. Helium flows in the central channel and in the annulus, around the strands.…”

Section: Introductionmentioning

confidence: 99%

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Analysis and interpretation of the full set (2000–2002) of TCS tests in conductor 1A of the ITER Central Solenoid Model Coil

Zanino

Mitchell²,

Savoldi

2003

Cryogenics

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The full set of T CS measurements performed during 2000-2002 on conductor 1A of the ITER Central Solenoid Model Coil (CSMC) of the International Thermonuclear Experimental Reactor (ITER) is analysed with the extensively validated M&M code. Under the assumptions of uniform strand properties and uniform current distribution among strands, the performance of this ''average'' strand in the cable is deduced from the best fit of the measured voltage-inlet temperature characteristics. Two fitting parameters are chosen: an ad-hoc additional contribution Ôe extra Õ to the longitudinal strain of the average strand in the cable, and the average-strand (or cable ''effective'') index ÔnÕ of the electric field-current density characteristic. It is shown that the average strand in the CSMC performed less well than expected from the strand database--an increasingly negative e extra being needed to reproduce the coil behaviour at increasing transport currents, and that the cable effective n is clearly below the measured n of the strand. It is argued that this average-strand performance reduction in the CSMC is most likely related to mechanical load effects.

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Section: Tests At 46 Kamentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Analysis and interpretation of the full set (2000–2002) of TCS tests in conductor 1A of the ITER Central Solenoid Model Coil

Zanino

Mitchell²,

Savoldi

2003

Cryogenics

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“…Die elektrischen Verbindungen der Teilwicklungen jeder Lage, der einzelnen Lagen untereinander sowie der Hauptanschlüsse des Innenmoduls werden als überlappende Kontakte vor der Reaktionsglühung vorbereitet (Martovetsky et al, 1997;Tsuji et al, 2001). Dazu wird die Stahlhülle auf einer Länge von ca.…”

Section: Die Kontakteunclassified

“…Die elektrischen Verbindungen der Teilwicklungen jeder Lage und der einzelnen Lagen des Außenmoduls werden hingegen als stumpfe Kontakte ausgeführt (Tsuji et al, 2001;Ando et al, 1996;Nunoya et al, 1996) Oberfläche der Stahlhülle mit kleinen Stahlkugeln beschossen ("shot peening"), um die Oberfläche des Materials einer Druckspannung auszusetzen (Mora, 1995). Die Glühung der Lagen des Innenmoduls erfolgt unter Vakuum, wobei der gesamte Innenraum des Leiters intensiv mit reinem Gas gespült wird, um alle Verunreinigungen inklusive Ölrückstände zu beseitigen.…”

Section: Die Kontakteunclassified