Design of 7.8 MJ 4 GeV Pb/sup ++/ heavy ion inertial fusion energy driver

A 7.8 MJ 4 GeV Pb/sup ++/ heavy ion (HI) inertial fusion energy (IFE) driver operating at 3.5 Hz has been designed for a prototype 1000 MW thermonuclear power plant planned early in the next century. The HI driver design is based upon a short, ramped gradient (5 MeV) LINAC followed by a longer (/spl...

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Bibliographic Details
Main Authors: Linford, G.J., Driemeyer, D.E., Fornaca, S.W., Maschke, A.W.
Format: Conference Proceeding
Language:English
Subjects:
Accelerator magnets
Fusion reactor design
Inductors
Ion beams
Linear particle accelerator
Particle beams
Prototypes
Pulse generation
Space charge
Storage rings
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Summary:A 7.8 MJ 4 GeV Pb/sup ++/ heavy ion (HI) inertial fusion energy (IFE) driver operating at 3.5 Hz has been designed for a prototype 1000 MW thermonuclear power plant planned early in the next century. The HI driver design is based upon a short, ramped gradient (5 MeV) LINAC followed by a longer (/spl sim/2 km) constant gradient, single beam LINAC operated in a 50 kHz burst mode to generate sequentially eighteen 4 GeV beamlets. A 2-sided irradiation geometry is provided for indirect-drive HI targets. Six beamlets generate the 30 ns precursor HI pulses and are accumulated in 2 superconducting storage rings (SCSRs). Twelve SCSRs accumulate 12 main beamlets with a final buncher generating 8 ns pulses. Ballistic foci of triplet focusing magnets pass through a Pb-vapor neutralization cell onto two Pb stripping jets permit 2-sided, self-pinched propagation through two small openings in the HI TC blanket. HI beam foci /spl sim/0.6 cm diameter were estimated, including the effects of beam emittance and residual space charge. Self-pinched HI beam transport in preformed channels greatly simplifies target chamber (TC) shielding and increases blanket coverage.
DOI:10.1109/FUSION.1993.518439