Design of S-Band accelerator structure utilizing 2.45 GHz magnetron Article Swipe
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1088/1742-6596/2596/1/012046
· OA: W4387473757
This work presents the design of a side-coupled standing wave accelerator structure operating in S-band resonant frequency. It consists of cavity cells, side coupling cells, a power coupling cavity cell, a waveguide structure, and a magnetron operating in an S-band frequency regime. It was designed to use a more commercially available magnetron (a frequency range of 2445 to 2465 MHz). Electromagnetic analysis was performed using CST Microwave Studio’s electromagnetic field eigenmode, time domain, and PIC solvers. A cavity cell design was obtained with Q 0 of 20288 and a shunt impedance of 96.247 MΩ. The multi-cavity structure is side coupled and operates in <?CDATA ${^\pi }/{_2}$?> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"> <mml:mrow> <mml:mfrac bevelled="true"> <mml:mi>π</mml:mi> <mml:mn>2</mml:mn> </mml:mfrac> </mml:mrow> </mml:math> mode at 2453.835 MHz with a quality factor of 13376. A power coupler with a width of 1.3 cm and length of 2.9 cm transfers the RF power through a WR340 waveguide into the cavity with minimal loss. The total structure length was 52.17 cm. We achieved a peak accelerating gradient of about 22.1 MV/m at 1 Joule of stored energy and calculated a beam peak energy of 4.535 MeV.
