Drift compression and final focus options for heavy ionfusion
A drift compression and final focus lattice for heavy ion beams should focus the entire beam pulse onto the same focal spot on the target. The authors show that this requirement implies that the drift compression design needs to satisfy a self-similar symmetry condition. For un-neutralized beams, the Lie symmetry group analysis is applied to the warm-fluid model to systematically derive the self-similar drift compression solutions. For neutralized beams, the 1D Vlasov equation is solved explicitly and families of self-similar drift compression solutions are constructed. To compensate for the deviation from the self-similar symmetry condition due to the transverse emittance, four time-dependent magnets are introduced in the upstream of the drift compression such that the entire beam pulse can be focused onto the same focal spot.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director. Office of Science. Office of Fusion EnergySciences
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 861592
- Report Number(s):
- LBNL-56917; HIFAN 1389; R&D Project: Z41003; BnR: AT5015031; TRN: US200602%%365
- Resource Relation:
- Conference: 15th International Symposium on Heavy IonInertial Fusion, Princeton, NJ, 06
- Country of Publication:
- United States
- Language:
- English
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Drift compression and final focus of intense heavy ion beams