ELECTRON BEAM DEVICE
    1.
    发明专利

    公开(公告)号:JPH0684474A

    公开(公告)日:1994-03-25

    申请号:JP6953093

    申请日:1993-03-29

    Abstract: PURPOSE: To provide an electron beam device to improve function efficiency at a technically marginal cost and to enhance reliability and safety. CONSTITUTION: A collector 4 includes several collector stages 6 arranged back and forth in a beam axis direction. The collector stages 6 have potential to be reduced by every stage. A feeding part having a high voltage direct current feeding part 13 comprises several switch stages S1,..., S6 of the same type, and these switch stages S1,..., S6 are constituted as switchable intermediate voltage sources whose output sides are connected in series. The multistage potential of the collector stages 6 is generated by a corresponding tap between the switch stages Si and Si+1 (i=1,..., 5) of the high voltage direct current feeding part 13.

    QUASI-OPTICAL GYROTRON
    2.
    发明专利

    公开(公告)号:JPH02299132A

    公开(公告)日:1990-12-11

    申请号:JP10188590

    申请日:1990-04-19

    Abstract: PURPOSE: To multiply the energy of an electron beam and to increase the number of high-frequency windows used for output combination by providing at least one high power resonator and the other resonator as well, and by freely rotating the axis of the electron beam in the vertical direction. CONSTITUTION: An electron e passes through a drift zone 4 along an axis 1 of a horizontal electron beam, and enters a first resonator 6 or a second resonator 7 so that the acceleration is performed. In this case, the drift zone 4 is surrounded with a magnetic shield 5, two mirrors 3a and 3b used as an advance nail group in a control resonator 2. Then, two superconductive coils 8a and 8b respectively accommodated in containers 9a and 9b generate a static magnetic field parallel to the axis 1, and the electron e is forcibly rotated at a corresponding cyclotron frequency. Two mirrors 12a and 12b are installed in the resonator 6, and two mirrors 12c and 12d are installed in the resonator 7. Moreover, the two mirrors 12a and 12b are opposed to each other on a longitudinal axis 10 of the resonator 6, and the two mirrors 12c and 12d are opposed to each other on a longitudinal axis 11 of the resonator 7. As a result, the electron e is driven toward the observer. Thus a number of windows 14a,..., 14d for emitting the electron e can be provided.

    METHOD AND APPARATUS FOR MEASURING ENERGY OF MICROWAVE

    公开(公告)号:JPH01316669A

    公开(公告)日:1989-12-21

    申请号:JP4865489

    申请日:1989-03-02

    Abstract: PURPOSE: To determine the energy of microwave pulse from increase in the content of heat by radiating a microwave into a absorption fluid having specified content of heat. CONSTITUTION: This measuring apparatus comprises a case 2 filled with a absorption fluid 3, a capillary tube 4 and a regulation volume 5. The case 2 has an outer shell of cylinder and the inside diameter of inner wall substantially corresponds to the diameter of a waveguide 1. A microwave pulse (shown by an arrow) propagating through the waveguide 1 strikes against a reflection cone 6 to be scattered radially. The majority of microwave intrudes into the case 2 through an inner wall 8, i.e., an HF window and then absorbed by the absorption fluid 3. Consequently, the absorption fluid 3 is heated at least locally and expanded correspondingly. The thermal expansion is measured by means of the capillary tube 4.

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