First Performance Results Of The PIP2IT MEBT 200 Ohm Kicker Prototype

Authors :: Saewert, G.
Awida, M. H.
Chase, B. E.
Chen, A.
Einstein-Curtis, J.
Frolov, D.
Martin, K.
Pfeffer, H.
Wolff, D.
Khole, S.
Sharma, D.
Publication Year :: 2018
Abstract: 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 $\mu$s bursts having a 45 MHz average switching rate and repeating at 20 Hz.<br />Comment: 3 pp