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- Choi, EunMi
- THz Vacuum Electronics and Applied Electromagnetics Lab.
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Stability Analysis of 300-GHz Sheet Electron Beam Transport in a Periodic Rectangular Quadrupole
- Author(s)
- Choi, Wonjin, Lee, Ingeun, Shin, Jinwoo, Choi, EunMi
- Issued Date
- 2021-03
- Citation
- IEEE TRANSACTIONS ON PLASMA SCIENCE, v.49, no.3, pp.1121 - 1127
- Abstract
- A novel periodic magnetic focusing system is proposed. The stability of elliptical sheet beam transport in the magnetic field of a periodic rectangular quadrupole (PRQ) is studied and compared with that in the magnetic field of periodically cusped magnets (PCMs). Theoretically predicted matching conditions are verified by numerical simulations. An 11.7- kV, 35-mA, 0.32 mm x 0.06 mm elliptical sheet beam is confined in a 0.53 mm x 0.08 mm beam tunnel and transported over a distance of 30 mm. Both the PCM and PRQ have similar characteristics of electron beam distribution change, beam emittance, and beam transmission. The results of the initial stability analysis indicate that PCMs are preferable to PRQs because of their ability to confine the beam with a long magnet period.
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- ISSN
- 0093-3813
- Keyword (Author)
- Laser beams, Mathematical model, Phase change materials, Magnetic tunneling, Electron beams, Focusing, Magnetostatics, Periodic magnetic field, sheet electron beam, traveling-wave tube (TWT)
- Keyword
- HIGH-POWER, PROPAGATION, THZ, PCM
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