The PIP-II project is a program to upgrade the Fermilab accelerator complex. The PIP-II linac includes a 2.1 MeV Medium Energy Beam Transport (MEBT) section that incorporates a unique chopping system to perform arbitrary, bunch-by-bunch removal of 162.5 MHz structured beam. The MEBT chopping system will consist of two identical kickers working together and a beam absorber. One design of two having been proposed has been a 200 Ohm characteristic impedance traveling wave dual-helix kicker driven with custom designed high-speed switches. This paper reports on the first performance results of one prototype kicker built, installed and tested with beam at the PIP-II Injector Test (PIP2IT) facility. The helix deflector design details are discussed. The electrical performance of the high-speed switch driver operating at 500 V bias is presented. Tests performed were chopping beam at 81.25 MHz for microseconds as well as with a truly arbitrary pattern for 550 μs bursts having a 45 MHz average switching rate and repeating at 20 Hz.
@article{arxiv.1806.08750,
title = {First Performance Results Of The PIP2IT MEBT 200 Ohm Kicker Prototype},
author = {G. Saewert and M. H. Awida and B. E. Chase and A. Chen and J. Einstein-Curtis and D. Frolov and K. Martin and H. Pfeffer and D. Wolff and S. Khole and D. Sharma},
journal= {arXiv preprint arXiv:1806.08750},
year = {2018}
}