Abstract
Spherical geometry has been widely used following Farnsworth’s original studies that stressed the possibility of three-dimensional compression of recirculating beams in the central core of this geometry. This becomes a very important feature if the goal is net power production. However, in many other applications, less compression (e.g., two-dimensional compression in a cylindrical geometry) may be adequate. Indeed, a unique feature of the IEC is that we can adapt its geometry to a number of important near-term applications short of power production. In this chapter, we consider cylindrical, Jet extraction, dipole-assisted, and magnetically coupled IEC geometries. These provide unique capabilities for various near-term commercial applications. For example, a long, cylindrical IEC can operate as an extended “line-like” neutron source for scanning large areas quickly; the IEC jet provides an intense localized beam for, e.g., space thrusting. Other important configurations, which are quasi-spherical, include the magnetic-assisted HEPS (Polywell) configuration, the Penning trap IEC, and the POPS oscillating IEC. These concepts are discussed elsewhere in this book, so they will not be included here. Finally, we will briefly consider several variations involving a linearized beam–beam interaction mechanism proposed for power production.
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Miley, G.H., Murali, S.K. (2014). Cylindrical and Other IEC Geometries. In: Inertial Electrostatic Confinement (IEC) Fusion. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-9338-9_9
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DOI: https://doi.org/10.1007/978-1-4614-9338-9_9
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