Title:
LINEAR BEAM TUBE WITH REFLECTING ELECTRON TRAP
Document Type and Number:
Japanese Patent JPS5975537
Kind Code:
A
Abstract:
Some electrons reflected from the collector of a klystron form a beam current flowing back toward the input end of the tube. This beam is modulated and can carry a regenerate signal which distorts the tube's performance when amplifying a television signal. The reflected electrons are removed by a spiralling transverse magnetic field having a pitch equal to the cyclotron wavelength in the axial magnetic field used to focus the beam. The rotative sense of the spiral is such that forward-going beam electrons are not affected but returning electrons are accelerated in their cyclotron orbits until they are driven outside the beam and are collected.
Inventors:
ROBAATO ESU SHIMONZU
Application Number:
JP16952483A
Publication Date:
April 28, 1984
Filing Date:
September 16, 1983
Export Citation:
Assignee:
VARIAN ASSOCIATES
International Classes:
H01J23/027; H01J23/11; H01J25/12; (IPC1-7): H01J23/11; H01J25/06
Domestic Patent References:
| JPS5776736A | 1982-05-13 |
Attorney, Agent or Firm:
Sumio Takeuchi