Author: Moeller, C.P.
Paper Title Page
WEPWB131 Demonstration of Magnetron as an Alternative RF Source for SRF Accelerators 902
 
  • H. Wang, K. Jordan, R.A. Rimmer
    JLab, Newport News, Virginia, USA
  • J.P. Anderson, C.P. Moeller, K.A. Thackston
    GA, San Diego, California, USA
 
  Funding: Authored by Jefferson Science Associates, LLC under U.S. DOE Contract No. DE-AC05-06OR23177, and DOE OS/ARDAP Accelerator Stewardship award 2019-2023.
Mag­netron has been con­sid­ered as al­ter­nate high-ef­fi­ciency, low-cost RF sources for linacs and stor­age rings [1] for na­tional labs and in­dus­trial ap­pli­ca­tions. After the demon­stra­tion of mag­netrons power to drive and com­bine for a radio fre­quency cav­ity at 2450 MHz in CW mode, we have used trim coils adding to a wa­ter-cooled mag­netron and am­pli­tude mod­u­la­tion feed­back to fur­ther sup­press the side-band noise to -46.7 dBc level. We also demon­strated the phase-lock­ing to an in­dus­trial grade cook­ing mag­netron trans­mit­ter at 915 MHz with a 75 kW CW power de­liv­ered to a water load by using a -26.6 dBc in­jec­tion sig­nal [2]. The side­band noise from the 3-Phase SCRs DC power sup­ply can be re­duced to -16.2 dBc level. Fur­ther noise re­duc­tion and their power com­bin­ing scheme using magic-tee and cav­ity type com­bin­ers for higher power ap­pli­ca­tion (2x75kW) are to be pre­sented. We in­tent to use one power sta­tion to drive the nor­mal con­duct­ing and su­per­con­duct­ing RF cav­i­ties for the in­duc­trial linac. We also going to demon­starte a ver­ti­cal SRF cav­ity test with a high input cou­pling Q using a 2.45GHz mag­netron and com­par­ing with a base­line test re­sult using a solid state am­pli­fier.
[1]. doi:10.18429/JACoW-IPAC2015-WEPWI028.
[2]. doi:10.18429/JACoW-NAPAC2022-WEZD3.
 
poster icon Poster WEPWB131 [2.445 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-SRF2023-WEPWB131  
About • Received ※ 16 June 2023 — Revised ※ 28 June 2023 — Accepted ※ 30 June 2023 — Issue date ※ 19 August 2023
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