@inproceedings{4d8dad1634f7417b8c50c7aeebc90bfe,
title = "Challenges in designing the modular coils for the National Compact Stellarator Experiment (NCSX)",
abstract = "The National Compact Stellarator Experiment (NCSX) is a quasi-axisymmetric plasma experiment that combines the high beta and good confinement of an advanced tokamak with the low current, disruption-free characteristics of a stellarator. The experiment is based on a three field-period plasma configuration with an average major radius of 1.4 m, a minor radius of 0.3 m, and a toroidal magnetic field on axis of up to 2-T. The modular coils are one set in a complex assembly of four coil systems that surround the highly shaped plasma. There are six each of three coil types in the assembly, for a total of 18 modular coils. The coils are constructed by winding copper cable onto a cast stainless steel winding form that has been machined to high accuracy, so that the current center of the winding pack is within +/-1.5 mm of its theoretical position. The modular coils operate at a temperature of 80 K and are subjected to rapid heating and stress during a pulse. The final coil design has presented many challenges with its requirements for winding accuracy, good thermal performance, a robust supporting structure, and ease of assembly and maintenance.",
keywords = "Design, Electromagnetic, Modular coil, Stellarator",
author = "D. Williamson and A. Brooks and T. Brown and J. Chrzanowski and M. Cole and Fan, \{H. M.\} and K. Freudenberg and P. Fogarty and T. Hargrove and P. Heitzenroeder and G. Lovett and B. Nelson and S. Raftopolous and W. Reiersen and B. Stratton and D. Strickler",
year = "2006",
doi = "10.1109/FUSION.2005.252889",
language = "English (US)",
isbn = "142440150X",
series = "Proceedings - Symposium on Fusion Engineering",
booktitle = "21st IEEE/NPS Symposium on Fusion Engineering, SOFE'05",
note = "21st IEEE/NPS Symposium on Fusion Engineering, SOFE'05 ; Conference date: 26-09-2005 Through 29-09-2005",
}