Studies of Plasma Containment in Cusp Magnetic Field for Two Liner Shapes PDF Download
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Author: Paulette C. Liewer
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
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Book Description
This note summarizes preliminary computational studies made of plasma confinement in a cusp magnetic field created by liners or coils of two different shapes. The amount of plasma contained was calculated at several radial positions of the liner to model a liner moving inward. It was found that the liner shape and position are important in achieving the lowest ratio of field to plasma energy and hence maximizing the efficiency of the compression. The results suggest further studies requiring a more sophisticated program now under development.
Author: Paulette C. Liewer
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
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Book Description
This note summarizes preliminary computational studies made of plasma confinement in a cusp magnetic field created by liners or coils of two different shapes. The amount of plasma contained was calculated at several radial positions of the liner to model a liner moving inward. It was found that the liner shape and position are important in achieving the lowest ratio of field to plasma energy and hence maximizing the efficiency of the compression. The results suggest further studies requiring a more sophisticated program now under development.
Author: L. S. Combes
Publisher:
ISBN:
Category : Magnetic fields
Languages : en
Pages : 32
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Book Description
A PLASMA CONTAINMENT DEVICE ENTITLED ROMAC (ROTATED MAGNETIC CUSP) WASCONSTRUCTED. AN ATTEMPT WAS MADE TO COMBINE THE BASIC STABILITY ADVANTAGES OF FOUR-POLE LINE CUSP WITH THE LOW LOSS RATE OF A MORROR FIELD. THE MAGNETIC FIELD FOR ROMAC WAS PRODUCED BY ADDING A MIRROR FIELD ORTHONGONALLY TO THE CUSP FIELD. USING PULSE TECHNIQUES AN IONIZED GAS WAS CREATED WITHIN A BICONICAL CHAMBER AND THE ROMAC MAGNETIC FIELD PRODUCED TRANSIENTLY WITH THE MIRROR FIELD ALONG THE AXIS OF THE CHAMBER(Z AXIS) AND THE CUSP FIELD IN THE X-Y PLANE. MEASUREMENTS WITH MAGNETIC PROBES AND LIGHT PIPES SHOW THAT A DISTURBANCE IN THE MAGNETIC FIELD, ACCOMPANIED BY AN INCREASE IN LIGHT INTENSITY, STARTED AT THE PERIPHERY OF THE PLASMA CHAMBER AND WAS PROPAGATED INWARD AT TWO VELOCITIES TO THE CENTRAL AXIS. DETAILED MEASUREMENTS WERE MADE ON THE MAGNETIC FIELD CONFIGURATION. THESE INDICATE THAT, AT THE TIME THE SECOND WAVE ARRIVED AT THE AXIS, THE MIRROR HIELD HAD BEEN TO A LARGE EXTENT SEPARATED FROM THE CUSP FIELD SO THAT MOSTLY MIRROR FIELD EXISTED THROUGHOUT THE CENTRAL REGION, WHILE MOSTLY CUSP FIELD EXISTED IN THE OUTER REGION. THE INTENSITY OF THE FIELD AT THIS TIME IN THE CENTRAL REGION INDICATES THAT THE CUSP FIELD WAS COMPRESSING THE PLASMA AND MIRRORFIELD IN THIS REGION WERE EVEN LARGER THAN THE MAXIMUM INTENSITY OF THE APPLIED MIRROR FIELD.
Author: Charles C. Gallagher
Publisher:
ISBN:
Category : Magnetic fields
Languages : en
Pages : 38
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Book Description
The advantages of a toroidal plasma containment device are illustrated. Low loss rates are predicted. A toroidal magnetic field is crossed with a multi-cusp magnetic field in configurations predicted by electrolytic tank analog experiments. Three such configurations are described. The first, a relatively simple device with slowly varying fields, showed the inability of the toroidal field to penetrate a plasma and strong cusp field. The second toroid, with moderately fast fields and application of rotational transform principles, produced plasma-field separation, as evidenced by a hot, relatively dense plasma contained in a central region of reduced cusp field strength. The third toroid, featuring the fastest rising fields, produced similar though more pronounced results, including a three fold compression of a plasma heated to over 15 eV, with containment times on the order of 20 microsec. (Author).
Author: Harold Grad
Publisher:
ISBN:
Category : Plasma (Ionized gases)
Languages : en
Pages : 28
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Author:
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ISBN:
Category : Nuclear energy
Languages : en
Pages : 680
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Author: R. D. Hazeltine
Publisher: Courier Corporation
ISBN: 0486151034
Category : Science
Languages : en
Pages : 484
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Book Description
Graduate-level text examines the essential physics underlying international research in magnetic confinement fusion with accounts of fundamental concepts behind methods of confining plasma at or near thermonuclear conditions. 1992 edition.
Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 978
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 538
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
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Author:
Publisher:
ISBN:
Category : Plasma (Ionized gases)
Languages : en
Pages : 838
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Book Description
Author: Charles C. Gallagher
Publisher:
ISBN:
Category : Magnetic fields
Languages : en
Pages : 32
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Book Description
Tormac 4 features the production, containment, and heating of plasma within a 48 cm O.D. toroidal chamber. The plasma has a predicted shield-shaped cross section, an included toroidal magnetic field component, and is contained by a two-pole cusp magnetic fluid comprised of both toroidal and poloidal components. The principal plasma heating is provided by an additional magnetic field component at 0.7 MHz. An electrolytic, analog tank facilitates the coil design and indicates that 18 kJ is sufficient to produce a uniform 6 kG on the plasma surface. An integral winding system for the poloidal and toroidal field coils minimizes coupling problems and simplifies insulation requirements. Single turn coils for preionization and heating are applied external to the poloidal-toroidal windings, and the whole device is reinforced with PVC plates and steel tie rods. (Modified author abstract).
