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

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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.

Engineering Systems Designs for a Recirculating Heavy Ion Induction Accelerator
Engineering Systems Designs for a Recirculating Heavy Ion Induction Accelerator

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Published: 1991

Total Pages: 5

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Recirculating heavy ion induction accelerators are being investigated as possible drivers for heavy ion fusion. Part of this investigation has included the generation of a conceptual design for a recirculator system. This paper will describe the overall engineering conceptual design of this recirculator, including discussions of the dipole magnet system, the superconducting quadrupole system and the beam acceleration system. Major engineering issues, evaluation of feasibility, and cost tradeoffs of the complete recirculator system will be presented and discussed. 5 refs., 4 figs.

Mechanical Design of Recirculating Accelerator Experiments for Heavy-ion Fusion
Mechanical Design of Recirculating Accelerator Experiments for Heavy-ion Fusion

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Published: 1995

Total Pages: 8

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Recirculating induction accelerators have been studied as a potential low cost driver for inertial fusion energy. At LLNL, we are developing a small (4.5-m diameter), scaled, experimental machine which will demonstrate many of the engineering solutions of a full scale driver. The small recirculator will accelerate singly ionized potassium ions from 80 to 320 keV and 2 to 8 mA, using electric dipoles for bending and permanent magnet quadrupoles for focusing in a compact periodic lattice. {ital While very compact, and low cost, this design allows the investigation of most of the critical physics issues associated with space-charge-dominated beams in future IFE power plant drivers.} This report describes the recirculator, its mechanical design, its vacuum design, and the process for aligning it. Additionally, a straight magnetic transport experiment is being carried out to test diagnostics and magnetic transport in preparation for the recirculator.

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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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.

Induction Accelerators
Induction Accelerators

Author: Ken Takayama

Publisher: Springer Science & Business Media

Published: 2010-10-05

Total Pages: 345

ISBN-13: 3642139175

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A broad class of accelerators rests on the induction principle whereby the accelerating electrical fields are generated by time-varying magnetic fluxes. Particularly suitable for the transport of bright and high-intensity beams of electrons, protons or heavy ions in any geometry (linear or circular) the research and development of induction accelerators is a thriving subfield of accelerator physics. This text is the first comprehensive account of both the fundamentals and the state of the art about the modern conceptual design and implementation of such devices. Accordingly, the first part of the book is devoted to the essential features of and key technologies used for induction accelerators at a level suitable for postgraduate students and newcomers to the field. Subsequent chapters deal with more specialized and advanced topics.

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

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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.

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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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.