Numerical Modeling of a Small Recirculating Induction Accelerator for Heavy-ion Fusion
Numerical Modeling of a Small Recirculating Induction Accelerator for Heavy-ion Fusion

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Published: 1994

Total Pages: 5

ISBN-13:

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A series of small-scale experiments has been proposed to study critical physics issues of a circular induction accelerator for heavy-ion fusion. Because the beam dynamics will be dominated by space charge, the experiments require careful design of the lattice and acceleration schedule. A hierarchy of codes has been developed for modeling the experiments at different levels of detail. The codes are discussed briefly, and examples of the output are presented.

Three Dimensional Simulations of a Small Induction Recirculator Accelerator
Three Dimensional Simulations of a Small Induction Recirculator Accelerator

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Publisher:

Published: 1995

Total Pages: 4

ISBN-13:

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A recirculating induction accelerator has potential cost advantages for a heavy-ion fusion driver. In order to explore the physics and technological issues, a small prototype recirculator is being built. The three dimensional particle-in-cell code, WARP3d, is being used in the design and analysis of the experiments. WARP3d is used to examine the behavior of the beam in the electric dipoles and in the non-linear fields associated with the accelerator lattice elements. The dipoles have focusing and fringe fields which can adversely affect the beam quality. Both single particle and full beam dynamics are examined in the dipoles using realistic geometries. Dipole plate designs which minimize the adverse effects are described. The non-linear fields associated with the permanent magnetic quadrupoles have been included in the simulations. They were found to have little effect on the quality of the beam.

European Particle Accelerator Conference (Epac 94) (In 3 Volumes)
European Particle Accelerator Conference (Epac 94) (In 3 Volumes)

Author: Christine Petit-jean-genaz

Publisher: World Scientific

Published: 1994-11-26

Total Pages: 2968

ISBN-13: 9814550272

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These proceedings aim to provide a comprehensive overview of research, technology and applications in the field of accelerators. Contributions from the entire field of accelerators are presented, including low and high energy machines, and medical and industrial accelerators.

Progress Toward a Prototype Recirculating Induction Accelerator for Heavy-ion Fusion
Progress Toward a Prototype Recirculating Induction Accelerator for Heavy-ion Fusion

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Publisher:

Published: 1995

Total Pages: 6

ISBN-13:

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The US Inertial Fusion Energy (IFE) Program is developing induction accelerator technology toward the goal of electric power production using Heavy-Ion beam-driven inertial Fusion (HIF). The recirculating induction accelerator promises driver cost reduction by repeatedly passing the beam through the same set of accelerating and focusing elements. The authors present plans for and progress, toward a small (4.5-m diameter) prototype recirculator which will accelerate K ions through 15 laps, from 80 to 320 keV and from 2 to 8 mA. Beam confinement is effected via permanent-magnet quadrupoles; bending is via electric dipoles. Scaling laws, and extensive particle and fluid simulations of the space-charge dominated beam behavior, have been used to arrive at the design. An injector and matching section are operational. Initial experiments are investigating intense-beam transport in a linear magnetic channel; near-term plans include studies of transport around a bend. Later experiments will study, insertion/extraction and acceleration with centroid control.

Preliminary Design for a Recirculating Induction Accelerator for Heavy Ion Fusion
Preliminary Design for a Recirculating Induction Accelerator for Heavy Ion Fusion

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Published: 1990

Total Pages: 7

ISBN-13:

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Substantial savings in size and cost over a linear machine may be achieved in an induction accelerator in which a heavy ion beam makes many ((approximately)50) passes through one or more circular accelerators. We examine a point design for such an accelerator, consisting of four rings. We discuss the consequences of this design on emittance growth, longitudinal instability growth, vacuum requirements, pulser requirements, pulsed-magnet requirements, acceleration schedule, and cost. 3 refs., 1 tab.

Recirculating Induction Accelerator as a Low-cost Driver for Heavy Ion Fusion
Recirculating Induction Accelerator as a Low-cost Driver for Heavy Ion Fusion

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Publisher:

Published: 1991

Total Pages: 11

ISBN-13:

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As a fusion driver, a heavy ion accelerator offers the advantages of efficient target coupling, high reliability, and long stand-off focusing. While the projected cost of conventional heavy ion fusion (HIF) drivers based on multiple beam induction linacs are quite competitive with other inertial driver options, a driver solution which reduces the cost by a factor of two or more will make the case for HIF truly compelling. The recirculating induction accelerator has the potential of large cost reductions. For this reason, an intensive study of the recirculator concept was performed by a team from LLNL and LBL over the past year. We have constructed a concrete point design example of a 4 MJ driver with a projected efficiency of 35% and projected cost of less than 500 million dollars. A detailed report of our findings during this year of intensive studies has been recently completed. 3 refs., 2 figs., 2 tabs.