Title:
ELECTRON BEAM TUBE
Document Type and Number:
Japanese Patent JPH0746420
Kind Code:
A
Abstract:
PURPOSE: To provide a cooling structure for an electron beam tube, where an electron gun is surrounded with an input resonance cavity to which a high-frequency energy is impressed. CONSTITUTION: This electron beam tube similar to an IOT includes an input cavity 6 surrounding an electron gun 1. A cylindrical dielectric member 15, arranged between end plates facing sideways of the cavity 6, has plural holes 17 in its peripheral edge. A coolant fluid like air is introduced from an entrance port 24 into the cavity 6 to cool the inside of the cavity and the outside surface of a vacuum vessel wall 18. Air flows on the outside surface of the cavity 6 in the lengthwise direction and flows into the cavity 6 through holes demarcated by spring fingers 21 and holes 17. Thermal stress in a device are reduced by this cooling, and consequently, mechanical integrity is improved.
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Inventors:
EDOWAADO SUTANISURAFU SOBIERAD
SUCHIYUAATO UIRIAMU ANDORIYUUS
MAAKU BURITSUJIIZU
SUCHIYUAATO UIRIAMU ANDORIYUUS
MAAKU BURITSUJIIZU
Application Number:
JP10969094A
Publication Date:
February 14, 1995
Filing Date:
May 24, 1994
Export Citation:
Assignee:
EEV LTD
International Classes:
H01J23/00; H01J25/04; H04N3/18; (IPC1-7): H04N3/18; H01J23/00
Attorney, Agent or Firm:
Minoru Nakamura (6 outside)
Next Patent: 磁気ディスク