Patent US3831101A successfully refreshed from Google Patents.
US3831101A
Expired / Lapsed
US
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Particle beam injection system
Assignee: Physics International Co
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Filing: 1973-03-05
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Granted: 1974-08-20
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Expires: 1993-03-05
Abstract
Abstract A beam of electrons is injected into a plasma confining magnetic field by directing the beam of particles along a trajectory which is generally parallel to the lines of force of the magnetic field with drift forces existing on the particles to cause them to drift across magnetic lines of force by either the use of an auxiliary magnetic field or by adjusting the parameters of the toroidal system when injecting into a toroidal confining magnetic field. The system is also adaptable to simultaneous injection of a plurality of beams and for injection times greater than one transit of the torus.
Inventors
- 👤 J Benford
- 👤 S Putnam
- 👤 C Stallings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:51
CPC Classifications
H; H05; H05H; H05H1/00; H05H1/02; H05H1/22
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
92 words
An apparatus for injecting charged particles into a confining magnetic field comprising means for producing a beam of charged particles, means for creating a confining magnetic field for confinement of a plasma of said charged particles, means for directing said beam of charged particles into said confining magnetic field along a trajectory generally parallel to the magnetic lines of force of said magnetic field, and means for controlling the drift of said beam of charged particles to cause said particles to drift across the magnetic lines of force of said magnetic field.
Claim 2
Independent Claim
92 words
An apparatus for injecting charged particles into a confining magnetic field comprising means for producing a beam of charged particles, means for creating a confining magnetic field for confinement of a plasma of said charged particles, means for directing said beam of charged particles into said confining magnetic field along a trajectory generally parallel to the magnetic lines of force of said magnetic field, and means for controlling the drift of said beam of charged particles to cause said particles to drift across the magnetic lines of force of said magnetic field.
Claim 3
Dependent Claim
15 words
The apparatus as claimed in claim 1 wherein said charged particles are energetic negative particles.
Claim 4
Dependent Claim
15 words
The apparatus as claimed in claim 1 wherein said charged particles are energetic positive particles.
Claim 5
Dependent Claim
16 words
The apparatus as claimed in claim 1 wherein said beam of charged particles is initially diverging.
Claim 6
Dependent Claim
24 words
The apparatus as claimed in claim 1 wherein said means for producing said beam of charged articles is disposed within said confining magnetic field.
Claim 7
Dependent Claim
37 words
The apparatus as claimed in claim 1 wherein said means for directing said beam of charged particles into said confining magnetic field further comprises means for deflecting said beam of charged particles away from said directing means.
Claim 8
Dependent Claim
38 words
The apparatus as claimed in claim 6 wherein said means for deflecting said beam of charged particles comprises means for producing an image force on said beam proximate the point of injection of said beam of charged particles.
Claim 9
Dependent Claim
40 words
The apparatus as claimed in claim 6 wherein said means for deflecting said beam of charged particles comprises means for producing an image force on said beam after travelling around said magnetic field and before passing the point of injection.
Claim 10
Dependent Claim
55 words
The apparatus as claimed in claim 1 wherein said means for directing said beam of charged particles into said confining magnetic field further comprises means for perturbing the lines of force of said confining magnetic field at one location, and means for directing said beam of charged particles tangent to said perturbed lines of force.
Claim 11
Dependent Claim
64 words
The apparatus as claimed in claim 1 wherein said means for directing said beam of charged particles into said conFining magnetic field further comprises means for increasing the drift rate of said beam of charged particles at one location, and means for directing said beam of charged particles into said magnetic field tangent to the lines of force of said field at said location.
Claim 12
Dependent Claim
76 words
The apparatus as claimed in claim 1 wherein said means for creating a confining magnetic field comprises means for creating a toroidal confining magnetic field, and said means for controlling the drift of said beam of particles comprises the adjustment of the magnitude of said toroidal confining magnetic field and the major radius of said toroid to cause said beam of charged particles to drift across the magnetic lines of force of said confining magnetic field.
Claim 13
Dependent Claim
61 words
The apparatus as claimed in claim 11 further comprising means for increasing the drift of said beam particles at one location, means for directing said beam of charged particles into said toroidal magnetic field tangent to the lines of force of said field at said location, and means for neutralizing said drift of said beam particles in said toroidal magnetic field.
Claim 14
Dependent Claim
40 words
The apparatus as claimed in claim 11 further comprising means for perturbing the lines of force of said confining magnetic field at one location, and means for directing said beam of charged particles tangent to said perturbed lines of force.
Claim 15
Dependent Claim
57 words
The apparatus as claimed in claim 13 further comprising means for creating a magnetic field whose lines of force are parallel to the axis of revolution of said toroidal confining magnetic field and of a magnitude sufficient to neutralize said drift of said charged particles across the unperturbed magnetic lines of force of said toroidal magnetic field.
Claim 16
Dependent Claim
59 words
The apparatus as claimed in claim 1 wherein said means for creating a confining magnetic field comprises means for creating a linear confining magnetic field, and said means for controlling the drift of said beam of charged particles comprises means for perturbing the lines of force of said confining magnetic field proximate the point of injection of said particles.
Claim 17
Dependent Claim
44 words
The apparatus as claimed in claim 15 wherein said means for controlling the drift of said beam comprises means for creating an auxiliary magnetic field perpendicular to the longitudinal axis of said linear confining magnetic field proximate the point of injection of said particles.
Claim 18
Dependent Claim
27 words
The apparatus as claimed in claim 1 wherein said means for directing said beam of charged particles is disposed along a side of said confining magnetic field.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |