3 papers
physics.acc-ph2020
Variable Polarization Control in Free-Electron Lasers
H. P. Freund, P. J. M. van der Slot
Free-electron lasers (FELs) over virtually the entire electromagnetic spectrum from microwaves through ultraviolet through hard x-rays that are either seeded or start from noise. F…
physics.acc-ph2020
High-Efficiency Inductive Output Tubes using a 3rd Harmonic Drive on the Grid
H. P. Freund, R. L. Ives, W. Sessions
In this paper, we discuss the use of a 3rd harmonic component to the drive voltage on the grid of an inductive output tube (IOT). High-efficiency inductive output tubes (IOTs) are…
physics.acc-ph2017
Comparison of a modal-decomposition and a grid based field solver for free-electron laser simulations
Pietro Falgari, Henry P. Freund, Dennis Grimminck
We present a comparison of the modal-decomposition based field solver MINERVA to the grid-based solver GENESIS. The modal decomposition used employs a set of fixed-width, zero-curv…