Transport efficiency studies for light-ion inertial confinement fusion systems using ballistic transport with solenoidal lens focusing
- JAYCOR, Inc., Vienna, VA (United States)
- Naval Research Lab., Washington, DC (United States). Plasma Physics Division
- Sandia National Labs., Albuquerque, NM (United States)
The proposed Laboratory Microfusion Facility (LMF) will require {ge}10 MJ of 30 MeV lithium ions to be transported and focused onto high-gain, high-yield inertial confinement fusion targets. The light-ion extraction diodes as beam sources. Previous work examined the effect of time-of-flight bunching on energy transport efficiency, {eta}{sub t}, under realistic constraints on diode operation, beam transport, and packing. Target design considerations suggest that the instantaneous power efficiency, {Gamma}{sub t}, be maximized near peak power. Because of time-of-flight bunching, peak power occurs at the end of the power pulse for LMF designs. This work examines the effect of power efficiency tuning on {eta}{sub t} for an LMF design using ballistic transport with solenoidal lens focusing. Results indicate that tuning the power pulse to maximize {Gamma}{sub t} at about three-quarters through the pulse provides high power efficiency at the end of the pulse while still maintaining high {eta}{sub t}. In addition to power efficiency tuning, effects on {eta}{sub t} from variations of the diode impedance model and the diode voltage waveform are also examined.
- OSTI ID:
- 64586
- Journal Information:
- IEEE Transactions on Plasma Science, Journal Name: IEEE Transactions on Plasma Science Journal Issue: 2 Vol. 23; ISSN ITPSBD; ISSN 0093-3813
- Country of Publication:
- United States
- Language:
- English
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