Abstract
In a previous paper the design of a 0.6 m bore wind and react Nb/sub 3/Sn solenoid has been presented. This project, whose realization is part of the European R&D program on fusion magnets, was based on certain assumptions concerning the elementary strands, in particular that they could be produced with an R.R.R. of about 150. Since then tests on the prototype base strands have been performed with results showing that, although the specification concerning J/sub c/ and a.c. losses were met, the R.R.R. (273 K/20 K) was a factor two lower than expected. As this ratio has profound influence on the behaviour of the coil under critical conditions a complete review and updating of the coil design has been performed. The superconducting cable (CICC type) has been modified to accommodate an increased number of base strands from 117 to 128 plus 16 high purity (OHFC) copper wires in order to counterbalance the effect of the reduced R.R.R. This in turn has involved the decrease of the steel conduit thickness so that a new stress analysis (using the ABAQUS code) has been necessary. The behaviour of the most stressed turns has been studied using the appropriate elastic constants of each
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Citation Formats
Della Corte, A, Pasotti, G, Sacchetti, N, and Spadoni, M.
Updated design of 0.6 m bore wind and react 12 T coil.
Italy: N. p.,
1991.
Web.
Della Corte, A, Pasotti, G, Sacchetti, N, & Spadoni, M.
Updated design of 0.6 m bore wind and react 12 T coil.
Italy.
Della Corte, A, Pasotti, G, Sacchetti, N, and Spadoni, M.
1991.
"Updated design of 0.6 m bore wind and react 12 T coil."
Italy.
@misc{etde_10131868,
title = {Updated design of 0.6 m bore wind and react 12 T coil}
author = {Della Corte, A, Pasotti, G, Sacchetti, N, and Spadoni, M}
abstractNote = {In a previous paper the design of a 0.6 m bore wind and react Nb/sub 3/Sn solenoid has been presented. This project, whose realization is part of the European R&D program on fusion magnets, was based on certain assumptions concerning the elementary strands, in particular that they could be produced with an R.R.R. of about 150. Since then tests on the prototype base strands have been performed with results showing that, although the specification concerning J/sub c/ and a.c. losses were met, the R.R.R. (273 K/20 K) was a factor two lower than expected. As this ratio has profound influence on the behaviour of the coil under critical conditions a complete review and updating of the coil design has been performed. The superconducting cable (CICC type) has been modified to accommodate an increased number of base strands from 117 to 128 plus 16 high purity (OHFC) copper wires in order to counterbalance the effect of the reduced R.R.R. This in turn has involved the decrease of the steel conduit thickness so that a new stress analysis (using the ABAQUS code) has been necessary. The behaviour of the most stressed turns has been studied using the appropriate elastic constants of each component of the cable in conduit conductor. A sensitivity analysis of the quench behaviour relative to different thermal disturbances durations and quenched conductor lengths has been performed using a one-dimensional code. The critical energy has been also evaluated both for internal (e.g. wire movements) and external disturbances (i.e. epoxy cracks).}
place = {Italy}
year = {1991}
month = {Dec}
}
title = {Updated design of 0.6 m bore wind and react 12 T coil}
author = {Della Corte, A, Pasotti, G, Sacchetti, N, and Spadoni, M}
abstractNote = {In a previous paper the design of a 0.6 m bore wind and react Nb/sub 3/Sn solenoid has been presented. This project, whose realization is part of the European R&D program on fusion magnets, was based on certain assumptions concerning the elementary strands, in particular that they could be produced with an R.R.R. of about 150. Since then tests on the prototype base strands have been performed with results showing that, although the specification concerning J/sub c/ and a.c. losses were met, the R.R.R. (273 K/20 K) was a factor two lower than expected. As this ratio has profound influence on the behaviour of the coil under critical conditions a complete review and updating of the coil design has been performed. The superconducting cable (CICC type) has been modified to accommodate an increased number of base strands from 117 to 128 plus 16 high purity (OHFC) copper wires in order to counterbalance the effect of the reduced R.R.R. This in turn has involved the decrease of the steel conduit thickness so that a new stress analysis (using the ABAQUS code) has been necessary. The behaviour of the most stressed turns has been studied using the appropriate elastic constants of each component of the cable in conduit conductor. A sensitivity analysis of the quench behaviour relative to different thermal disturbances durations and quenched conductor lengths has been performed using a one-dimensional code. The critical energy has been also evaluated both for internal (e.g. wire movements) and external disturbances (i.e. epoxy cracks).}
place = {Italy}
year = {1991}
month = {Dec}
}