US3611166A
Expired / Lapsed
US
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Accelerator for relativistic electrons
Assignee: Thales SA
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Filing: 1968-11-08
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Granted: 1971-10-05
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Expires: 1988-11-08
Abstract
Abstract An electron accelerator supplied with H.F. energy comprising one or more resonators in series through which an electron beam is propagated several times, along parallel trajectories with deflection by 180* at each end of the accelerator.
Inventors
- 👤 Bernard Epsztein
- 👤 Jacques Pinel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:16
CPC Classifications
H; H05; H05H; H05H9/00; H05H9/04; H05H7/00; H05H7/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
65 words
An electron accelerator comprising an arrangement including n cavity resonators associated in series for electron beam propagation therein, n being an integer, means for feeding an electron beam into said arrangement at one thereof, magnetic means for propagating said beam a plurality of times out and back along different rectilinear, parallel trajectories throughout said arrangement and means for feeding high frequency energy to said arrangement.
Claim 2
Dependent Claim
65 words
An electron accelerator comprising an arrangement including n cavity resonators associated in series for electron beam propagation therein, n being an integer, means for feeding an electron beam into said arrangement at one thereof, magnetic means for propagating said beam a plurality of times out and back along different rectilinear, parallel trajectories throughout said arrangement and means for feeding high frequency energy to said arrangement.
Claim 3
Dependent Claim
64 words
An electron accelerator as claimed in claim 1, wherein said beam-propagating means comprise deflecting means including a first and a second beam-deflecting system, respectively positioned at the two ends of said arrangement, said first and second systems each comprising a plurality of deflecting elements, each element of one plurality being positioned for deflecting said beam through 180* towards one element of said other plurality.
Claim 4
Dependent Claim
50 words
An electron accelerator as claimed in claim 2, wherein said deflecting elements are magnetic elements having a semicircular gap through which said beam propagates and wherein the magnetic flux density is constant, uniform and normal to the common direction of said rectilinear trajectories for causing semicircular deflections of said beam.
Claim 5
Dependent Claim
36 words
An electron accelerator as claimed in claim 3, wherein said flux in said deflecting elements of one of said systems is directed normally to the direction of said flux in said elements of said other system.
Claim 6
Dependent Claim
40 words
An electron accelerator as claimed in claim 3, wherein said flux in said deflecting elements of each system is directed in a direction opposite to that in which it is directed in the elements of the same system adjacent thereto.
Claim 7
Dependent Claim
29 words
An electron accelerator as claimed in claim 1, wherein said arrangement of cavity resonators comprises two identical resonators having a common axis of revolution and abutting symmetrically each other.
Claim 8
Dependent Claim
20 words
An electron accelerator as claimed in claim 6, having means for feeding thereto said electron beam along said common axis.
Claim 9
Dependent Claim
24 words
An electron accelerator as claimed in claim 6, wherein said resonators are small-gap cavity resonators having a cylindrical body and opposed dished end walls.
Claim 10
Dependent Claim
22 words
An electron accelerator as claimed in claim 6, further comprising means for feeding ultrahigh frequency energy to said resonators in phase opposition.
Claim 11
Dependent Claim
31 words
An electron accelerator as claimed in claim 1, wherein means for feeding said electron beam into said resonators comprise means for bunching said electron beam prior to entering the first resonator.
Claim 12
Dependent Claim
41 words
An electron accelerator as claimed in claim 3, wherein said deflecting elements of each of said two magnetic systems are disposed stepwise with respect to each other on both sides of the deflecting element in which takes place the first deflection.
Claim 13
Dependent Claim
41 words
An electron accelerator as claimed in claim 3, wherein the pole pieces of said deflecting elements are tapered to prOvide an acute angle Alpha between the direction of the beam, and the normal to the outer face of said pole pieces.
Claim 14
Dependent Claim
59 words
An electron accelerator as claimed in claim 3, wherein the pole pieces of said deflecting elements are tapered to provide a slope between the pole pieces of said deflecting elements so that the distance between said pole pieces of said deflecting elements so that the distance between said pole pieces increases in the direction of propagation of the beam.
References Cited (Backward Citations)
US2462087A
Cited
US2953750A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |