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Slide 1 The Heavy Ion Fusion Science Virtual National Laboratory Why heavy ions? Target requires: 3.5 – 6 MJ in ~ 10 ns  500 TW Range ~ 0.02 – 0.20 g/cm.

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Presentation on theme: "Slide 1 The Heavy Ion Fusion Science Virtual National Laboratory Why heavy ions? Target requires: 3.5 – 6 MJ in ~ 10 ns  500 TW Range ~ 0.02 – 0.20 g/cm."— Presentation transcript:

1 Slide 1 The Heavy Ion Fusion Science Virtual National Laboratory Why heavy ions? Target requires: 3.5 – 6 MJ in ~ 10 ns  500 TW Range ~ 0.02 – 0.20 g/cm 2 Range requirement Power requirement Higher mass  Higher kinetic energy Current ~ 1/Kinetic energy Higher mass requires lower current (easier to focus)

2 Slide 2 The Heavy Ion Fusion Science Virtual National Laboratory Heavier ions  higher kinetic energy Energy (GeV) Range (g/cm 2 ) Targets require high power (kinetic energy x current) Light ion fusion requires high current, unconventional accelerators (Sandia, 1970's) Heavy Ion Fusion requires lower currents enabling the use of more conventional accelerators (Mashke, ~ 1974)

3 Slide 3 The Heavy Ion Fusion Science Virtual National Laboratory There are two principle methods of acceleration

4 Slide 4 The Heavy Ion Fusion Science Virtual National Laboratory A multiple beam induction linac driver

5 Slide 5 The Heavy Ion Fusion Science Virtual National Laboratory A Robust Point Design study established a baseline for a multiple-beam quadrupole induction linac HIF driver Multiple Ion Source/ Injectors Multiple-beam acceleration Drift compression Bending Final focusing Chamber transport Target Input 7 MJ Yield 400 MJ 1.6 MeV 0.63 A/beam 30  s 120 beams 4 GeV Bi +1 94 A/beam 200 ns 4 GeV 1.9 kA/beam 9.3 ns Relative beam bunch length at end of: injection acceleration drift compression Common Induction cores 3 km 400 m

6 Integration of target,chamber, and accelerator requirements led to the self-consistent point design Ion: Bi + (A=209) Main pulse: 4 GeV Foot pulse: 3.3 GeV 120 beams total (72 main, 48 foot) Pulse energy: 7 MJ Final spot radius: 2.2 mm 3 D neutronics calculations Chamber dynamics Mechanical engineering Final beam optics + target physics + chamber propagation Length: 2.7 km; Efficiency 28% Total cost: 2.8 B$

7 Slide 7 The Heavy Ion Fusion Science Virtual National Laboratory The arrays of flowing FLiNaBe liquid salt jets provide windows through which the beams pass

8 Slide 8 The Heavy Ion Fusion Science Virtual National Laboratory


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