Standing wave linear accelerator having non-resonant side cavity

Details Standing wave linear accelerator having non-resonant side cavity Standing wave linear accelerator having non-resonant side cavity

1985-03-29

1986-12-16

Yeung, James C.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Combined cathode ray tube and circuit element structure

315 542, H01J 2500

Patent

active

046299386

ABSTRACT:
A linear accelerator includes cascaded standing wave main cavities with approximately the same resonant frequency and plural side cavities. A charged particle beam travels longitudinally through the main cavities. An electromagnetic wave excites the cavities with a frequency that is approximately the same as the resonant frequency of the main cavities. There is normally a fixed electromagnetic energy phase shift in adjacent main cavities. The resonant frequency of at least one side cavity is adjusted so it differs from the electromagnetic wave frequency. The detuned side cavity resonant frequency causes: (a) a change in the normal fixed phase shift of the main cavities adjacent the one side cavity and (b) a decrease in electric field strength in cavities electromagnetically downstream of the one side cavity relative to the electric field strength in cavities electromagnetically upstream of the one side cavity. In different embodiments, the electromagnetic wave is injected into a cavity where the particle beam is upstream and downstream of the one side cavity, respectively.

REFERENCES:
patent: 4286192 (1981-08-01), Tanabe et al.
patent: 4382208 (1983-05-01), Meddaugh et al.
patent: 4400650 (1983-08-01), Giebeler, Jr.

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