Developing acceleration schedules for NDCX-II*

✍ Scribed by W.M. Sharp; A. Friedman; D.P. Grote; E. Henestroza; M.A. Leitner; W.L. Waldron

• Book ID: 103857681
• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 436 KB
• Volume: 606
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2009.03.229

✦ Synopsis

The Virtual National Laboratory for Heavy-Ion Fusion Science is developing a physics design for NDCX-II, an experiment to study warm dense matter heated by ions near the Bragg-peak energy. Present plans call for using about thirty induction cells to accelerate 30 nC of Li + ions to more than 3 MeV, followed by neutralized drift-compression. To heat targets to useful temperatures, the beam must be compressed to a millimeter-scale radius and a duration of about 1 ns. An interactive 1-D particle-in-cell simulation with an electrostatic field solver, acceleration-gap fringe fields, and a library of realizable analytic waveforms has been used for developing NDCX-II acceleration schedules. Axisymmetric simulations with WARP have validated this 1-D model and have been used both to design transverse focusing and to compensate for injection non-uniformities and radial variation of the fields. Highlights of this work are presented here.