US3733490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary target for electrostatic accelerator which operates as a neutron generator
Assignee: EN ATOMIQUE
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Filing: 1971-01-08
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Granted: 1973-05-15
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Expires: 1991-01-08
Abstract
Abstract The rotary target has a generally annular shape and is carried by a rotor into which the beam of the accelerator penetrates, a stator being placed around said rotor and forming an end-shield behind the target. Heat-transporting fluid is circulated within the space formed between the end-shield and the target as a result of rotation of the rotor which acts on the fluid in the same manner as a pump. A heat exchanger is placed on the path of the heat-transporting fluid and at least one system of baffles is placed between the rotor and the stator.
Inventors
- 👤 M Roche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:36
CPC Classifications
H; H05; H05H; H05H6/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
112 words
A rotary target for an electrostatic accelerator neutron generator subject to impact of a beam of accelerated particles, comprising an annular target, a rotor supporting said target, the beam of the accelerator entering said rotor, a shaft for said rotor, at least one bearing for said shaft, means for rotating said shaft, a stator under vacuum around said rotor including an end-shield spaced behind said target, means for circulation of a heat-transporting fluid in said stator under vacuum within the space between said end-shield and said target including said rotor pumping said fluid, a heat exchanger for said fluid and at least one system of baffles between said rotor and said stator.
Claim 2
Dependent Claim
112 words
A rotary target for an electrostatic accelerator neutron generator subject to impact of a beam of accelerated particles, comprising an annular target, a rotor supporting said target, the beam of the accelerator entering said rotor, a shaft for said rotor, at least one bearing for said shaft, means for rotating said shaft, a stator under vacuum around said rotor including an end-shield spaced behind said target, means for circulation of a heat-transporting fluid in said stator under vacuum within the space between said end-shield and said target including said rotor pumping said fluid, a heat exchanger for said fluid and at least one system of baffles between said rotor and said stator.
Claim 3
Dependent Claim
108 words
A rotary target according to claim 1, said rotor having a frustoconical shape, the beam of particles entering the summit of said cone, said target being at the base of said cone, a lateral surface for said rotor, shoulders on said surface forming low-conductance baffles, fins connecting said cone to said shaft, said target connecting said cone to said shaft, a pulley on said shaft, a plurality of cavities in said stator receiving said shoulders for differential pumping in each of said cavities, one wall of each of said cavities being maintained at the temperature of liquid nitrogen, and a lipped seal between said end-shield and said shaft.
Claim 4
Dependent Claim
26 words
A rotary target according to claim 1, said rotor being flat, a magnetic device rotating said shaft and said heat-transporting fluid having a low vapor pressure.
Claim 5
Dependent Claim
63 words
A rotary target according to claim 1, said baffles including at least two coaxial toric cavities in said stator, a stepped section at the circumference of said rotor opposite said cavities, openings for said cavities opening toward said rotor, said openings being generally of circular shape, and sharp edges for said openings, said sharp edges being in the immediate vicinity of said rotor.
Claim 6
Dependent Claim
106 words
A rotary target according to claim 4, including two of said toric cavities and four of said circular sharp edges defining from the interior towards the exterior successive portions of the stator surface opposite said rotor, one of said portions being parallel to said rotor and before the first of said sharp edges, a second of said portions being a conical surface closer to said rotor and between the second and the third sharp edge, a third of said portions being a surface parallel to said rotor surface and after the fourth sharp edge, said stepped section of said rotor being opposite the third sharp edge.
References Cited (Backward Citations)
US3331978A
Cited
US3609369A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |