Drift compression and final focus options for heavy ion fusion

TY - JOUR

T1 - Drift compression and final focus options for heavy ion fusion

AU - Qin, Hong

AU - Davidson, Ronald C.

AU - Barnard, John J.

AU - Lee, Edward P.

PY - 2005/5/21

Y1 - 2005/5/21

N2 - 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. We 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.

AB - 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. We 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.

KW - Beam compression

KW - Heavy ion fusion

KW - Self-similar symmetry

UR - https://www.scopus.com/pages/publications/18544364911

UR - https://www.scopus.com/pages/publications/18544364911#tab=citedBy

U2 - 10.1016/j.nima.2005.01.214

DO - 10.1016/j.nima.2005.01.214

M3 - Conference article

SN - 0168-9002

VL - 544

SP - 255

EP - 261

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

IS - 1-2

T2 - Proceedings of the 15th International Symposium on Heavy Intertial Fusion HIF 2004

Y2 - 7 June 2004 through 11 June 2004

ER -