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Drift compression and final focus for intense heavy ion beams with nonperiodic, time-dependent lattice
| Content Provider | Semantic Scholar |
|---|---|
| Author | Davidson, Ronald Crosby Barnard, John F. J. Lee, Edward |
| Copyright Year | 2004 |
| Abstract | In the currently envisioned configurations for heavy ion fusion, it is necessary to longitudinally compress the beam bunches by a large factor after the acceleration phase. Because the space-charge force increases as the beam is compressed, the beam size in the transverse direction will increase in a periodic quadrupole lattice. If an active control of the beam size is desired, a larger focusing force is needed to confine the beam in the transverse direction, and a nonperiodic quadrupole lattice along the beam path is necessary. In this paper, we describe the design of such a focusing lattice using the transverse envelope equations. A drift compression and final focus lattice should focus the entire beam pulse onto the same focal spot on the target. This is difficult with a fixed lattice, because different slices of the beam may have different perveance and emittance. Four time-dependent magnets are introduced in the upstream of drift compression to focus the entire pulse onto the same focal spot. Drift compression and final focusing schemes are developed for a typical heavy ion fusion driver and for the integrated beam experiment being designed by the Heavy Ion Fusion Virtual National Laboratory. |
| Starting Page | 104201 |
| Ending Page | 104201 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| DOI | 10.1103/PhysRevSTAB.7.104201 |
| Alternate Webpage(s) | https://digital.library.unt.edu/ark:/67531/metadc779966/m2/1/high_res_d/836937.pdf |
| Alternate Webpage(s) | https://nonneutral.pppl.gov/pdfpapers/HQ.1.2004.pdf |
| Alternate Webpage(s) | https://doi.org/10.1103/PhysRevSTAB.7.104201 |
| Volume Number | 7 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
