The Focus Fusion Society Forums Dense Plasma Focus (DPF) Science and Applications Variable plasmoid axial movement in the FF reactor.

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  • #672
    Axil
    Participant

    Variable plasmoid axial movement in the FF reactor.

    As well as the regular daily variation the Earth’s magnetic field also exhibits irregular disturbances, and when these are large they are called magnetic storms. These disturbances are caused by interaction of the solar wind, and disturbances therein, with the Earth’s magnetic field. The solar wind is a stream of charged particles continuously emitted by the Sun and its pressure on the Earth’s magnetic field creates a bounded comet-shaped region surrounding the Earth called the magnetosphere. When there is a disturbance in the solar wind the current systems existing within the magnetosphere are enhanced and cause magnetic disturbances and storms.

    As the earth rotates through these varying asymmetries imposed on the terrestrial magnetic field lines, variability in the strength and direction in the lines is produced at any fix given spot on the surface of the earth.

    If the FF reactor plasmoid is formed on the basis of a constantly varying terrestrial magnetic field lines, the direction of the polls of the plasmoid will also vary over a wide range. Is this true?

    If it is true, how will the ion conversion tube in the FF reactor be adjusted to compensate for this variable directionality of the alpha particle beam caused by the variability in the magnetic field lines of the earth?

    If not true, does magnetic field line variability have any effect on the plasmoid?

    #5175
    jjohnson
    Participant

    Look at the difference in field strengths at the plasmoid and at the surface of the Earth in the most intense magnetic storm. I’d be surprised if the plasmoid could be affected in any way.

    #5185
    Henning
    Participant

    Axil wrote:
    If the FF reactor plasmoid is formed on the basis of a constantly varying terrestrial magnetic field lines, the direction of the polls of the plasmoid will also vary over a wide range. Is this true?

    If it is true, how will the ion conversion tube in the FF reactor be adjusted to compensate for this variable directionality of the alpha particle beam caused by the variability in the magnetic field lines of the earth?

    If not true, does magnetic field line variability have any effect on the plasmoid?

    You’re right with the plasmoid being affected by the earth’s magnetic field. It actually induces the primary spin. With a coil around the DPF (see patent application), that spin is introduced in a controlled way. But you don’t need to act on the deceleration coil (ragowski coil), because the alphas shoot through in a straight way (much faster anyway).

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