Status of experiments at LLNL on high-power X-band microwave generators

Timothy L. Houck, Glen A. Westenskow, Howard E. Brandt
1994 Intense Microwave Pulses II  
Thisisa preprintof• paperintendedforpublicationin• journal orproceedin M. Since chansesmaybe madebeforepublication, this preprintis madeavailablewith the understandin$ thatit will notbe citedm'reproduced withoutthepermissionof the author. 9 . 13ISTRIB'U"TtON OF THTS DOCUMENT IS UNLIMITED I DISCLAIMER This document was prepared as m _-coumo( work spemoredby ,m qmc? of the Un_ed States GovernmenL Nei_er theUnited StatesGovernmentnor lhe University of Cdiforn_ nor my _ tbdr ml_oy_l, makesmy
more » ... y_l, makesmy warranty,expressor impUed, or _sumes my Iqd Uabi_y or raHp_m_U_yfor the _-mrncy, comple(me_ or mdak_eu otmy intormstkm, _us, product,or process disclosed, or represmlsIk_ iU use wouJd notintrinle privulelyownedrigk_ Reference kenin toanyspecific commercial products,process, or serviceby tradename,trademark,lumufactorer, or aduerwbe, does not mcessarily comUtute or imply Ksendonement, I_comm_ ortsvorin_ by the United Sbd. Government or the University d CaUforui8. The views and Olp_iom of _NLhon exprm_ herein do not necessarily state or reflect tboee o( tin Unitd $tatei Government or the University d Cdifomia, and did| na be usedfor Jvenisin8 or product endorsement purposes. ABSTRACT The Microwave Source Facility at the Lawrence Livermore National Laboratory (LLNL) is studying the application of induction accelerator technology to high-power microwave generators suitable for linear coUider power sources. We report on the results of two experiments, both using the Choppertron's 11.4 GHz modulator and a 5-MeV, 1-kA induction beam. The first experimental configuration has a single travelingwave output structure designed to produce in excess of 300 MW in a single fundamental waveguide. This output structure consists of 12 individual ceils, the first two incorporating de-Q-ing circuits to dampen higher order resonant modes. The second experiment studies the feasibility of enhancing beam to microwave power conversion by accelerating a modulated beam with induction cells. Referred to as the "Reacceleration Experiment," this experiment consists of three traveling-wave output structures designed to produce about 125 MW per output and two induction ceils located between the outputs. Status of current and planned experiments are presented.
doi:10.1117/12.175776 fatcat:y7l46wynvzeqnfhqtartcjerqa