| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 21 | Betatron with a variable orbit radius | US12431554 | 2009-04-28 | US08013546B2 | 2011-09-06 | Joerg Bermuth; Georg Geus; Gregor Hess; Urs Viehboeck |
| A betatron, especially for an X-ray testing apparatus is provided that includes a rotationally symmetrical inner yoke having two interspaced parts, at least one round plate that is arranged between the inner yoke parts in such a way that the longitudinal axis thereof coincides with the rotational symmetrical axis of the inner yoke, an outer yoke connecting the two inner yoke parts, at least one main field coil, a toroidal betatron tube arranged between the inner yoke parts, at least one tune coil in the region of the at least one round plate, and an electronic control system for controlling a current flow through the tune coil during the injection phase of the electrons into the betatron tube. | ||||||
| 22 | BETATRON WITH A CONTRACTION AND EXPANSION COIL | US12431634 | 2009-04-28 | US20090268872A1 | 2009-10-29 | Joerg Bermuth; Georg Geus; Gregor Hess; Urs Viehboeck |
| A betatron, especially in X-ray testing apparatus is provided, that includes a rotationally symmetrical inner yoke having two interspaced parts, an outer yoke connecting the two inner yoke parts, at least one main field coil, a toroidal betatron tube arranged between the opposing front sides of the inner yoke parts, and at least one contraction and expansion coil. An individual CE coil is respectively arranged between the front side of the inner yoke part and the betatron tube, and the radius of the CE coil is essentially the same as the nominal orbital radius of the electrons in the betatron tube. | ||||||
| 23 | BETATRON WITH A REMOVABLE ACCELERATOR BLOCK | US12431699 | 2009-04-28 | US20090267543A1 | 2009-10-29 | Joerg Bermuth; Georg Geus; Gregor Hess; Urs Viehboeck |
| A betatron is provided, particularly in an x-ray inspection station, comprising an accelerator block that is provided with a rotationally symmetrical inner yoke composed of two spaced-apart pieces, at least one main field coil, and a toroidal betatron tube which is disposed between the pieces of the inner yoke. The betatron further comprises an outer yoke which embraces the accelerator block, connects the two pieces of the inner yoke, and has at least one lateral opening, as well as a lead shield that accommodates the accelerator block and the outer yoke. The outer yoke is composed of at least two parts which are movable relative to one another between an open and a closed position. The accelerator block can be laterally removed from the opening of the outer yoke that is in the open position. | ||||||
| 24 | BETATRON WITH A VARIABLE ORBIT RADIUS | US12431554 | 2009-04-28 | US20090267542A1 | 2009-10-29 | Joerg Bermuth; Georg Geus; Gregor Hess; Urs Viehboeck |
| A betatron, especially for an X-ray testing apparatus is provided that includes a rotationally symmetrical inner yoke having two interspaced parts, at least one round plate that is arranged between the inner yoke parts in such a way that the longitudinal axis thereof coincides with the rotational symmetrical axis of the inner yoke, an outer yoke connecting the two inner yoke parts, at least one main field coil, a toroidal betatron tube arranged between the inner yoke parts, at least one tune coil in the region of the at least one round plate, and an electronic control system for controlling a current flow through the tune coil during the injection phase of the electrons into the betatron tube. | ||||||
| 25 | Betatron including electromagnet structure and energizing circuit therefor | US546940 | 1975-02-04 | US3975689A | 1976-08-17 | Alfred Albertovich Geizer; Vladimir Lukyanovich Chakhlov |
| A betatron is disclosed comprising an electromagnet having the gap thereof defined by the shaped tips of its pair of pole cores contains therewithin a vacuum accelerating chamber. The gap contains therewithin at least one bias winding connected in series with the magnetizing winding of the electromagnet. Both windings are excited by one and the same current pulse generator and are coupled to its energy accumulator via the switching elements of the generator. The switching elements of the generator, which return the energy stored by the electromagnet to the accumulator, are coupled to the magnetizing winding. | ||||||
| 26 | Charged particle accelerator | US2517660 | 1960-04-27 | US3019394A | 1962-01-30 | BENNETT WILLARD H |
| 27 | Charged particle accelerator | US54828355 | 1955-11-21 | US2942106A | 1960-06-21 | BENNETT WILLARD H |
| 28 | Magnetic induction accelerator | US70855246 | 1946-11-08 | US2698384A | 1954-12-28 | ROLF WIDEROE |
| 29 | Magnetic induction accelerator | US19832550 | 1950-11-30 | US2663813A | 1953-12-22 | ROLF WIDEROE |
| 30 | Magnetic induction accelerator | US42747442 | 1942-01-20 | US2331788A | 1943-10-12 | BALDWIN GEORGE C |
| 31 | INTERLACED MULTI-ENERGY BETATRON WITH ADJUSTABLE PULSE REPETITION FREQUENCY | US13961831 | 2013-08-07 | US20150043717A1 | 2015-02-12 | Gongyin Chen; Robert Drubka |
| Variable pulse frequency during an output session of a betatron device and adjustable energy from pulse to pulse are provided. A different bias magnetic field may be used for different cycles of an output session, thereby providing different pulse energies. In one example, the bias field can be switched from a positive value to zero, with energy stored in a storage device when the bias field is zero. The bias field can also be used to expand electrons from a stable orbit when the bias field is decreased. For variable pulse frequency, when a current in the swing coils decreases to zero, the swing coils can be disengaged from a storage device for an adjustable time before re-engaging for a next cycle, thereby adjusting the frequency. In addition, radiation dose output can be adjusted by varying a length of time for the injection of electrons into a betatron. | ||||||
| 32 | Betatron with a removable accelerator block | US12431699 | 2009-04-28 | US07994740B2 | 2011-08-09 | Joerg Bermuth; Georg Geus; Gregor Hess; Urs Viehboeck |
| A betatron is provided, particularly in an x-ray inspection station, comprising an accelerator block that is provided with a rotationally symmetrical inner yoke composed of two spaced-apart pieces, at least one main field coil, and a toroidal betatron tube which is disposed between the pieces of the inner yoke. The betatron further comprises an outer yoke which embraces the accelerator block, connects the two pieces of the inner yoke, and has at least one lateral opening, as well as a lead shield that accommodates the accelerator block and the outer yoke. The outer yoke is composed of at least two parts which are movable relative to one another between an open and a closed position. The accelerator block can be laterally removed from the opening of the outer yoke that is in the open position. | ||||||
| 33 | Betatron with a yoke made of composite powder | US12431626 | 2009-04-28 | US07889839B2 | 2011-02-15 | Joerg Bermuth; Georg Geus; Gregor Hess; Urs Viehboeck |
| A betatron is provided, particularly for an x-ray inspection station, and includes a rotationally symmetrical inner yoke that is composed of two spaced-apart pieces, an outer yoke which connects the two pieces of the inner yoke, at least one main field coil, and at least one toroidal betatron tube located between the pieces of the inner yoke. At least part of the inner yoke and/or the outer yoke can be made of a composite powder. | ||||||
| 34 | Single drive betatron | US11957178 | 2007-12-14 | US07638957B2 | 2009-12-29 | Felix Chen |
| A betatron includes a betatron magnet with a first guide magnet having a first pole face and a second guide magnet having a second pole face. Both the first and the second guide magnet have a centrally disposed aperture and the first pole face is separated from the second pole face by a guide magnet gap. A core is disposed within the centrally disposed apertures in an abutting relationship with both guide magnets. The core has at least one core gap. A drive coil is wound around both guide magnet pole faces. An orbit control coil has a contraction coil portion wound around the core gap and a bias control portion wound around the guide magnet pole faces. The contraction coil portion and the bias control portion are connected but in opposite polarity. Magnet fluxes in the core and guide magnets return through peripheral portions of the betatron magnet. | ||||||
| 35 | SINGLE DRIVE BETATRON | US11957178 | 2007-12-14 | US20090153279A1 | 2009-06-18 | Felix Chen |
| A betatron includes a betatron magnet with a first guide magnet having a first pole face and a second guide magnet having a second pole face. Both the first and the second guide magnet have a centrally disposed aperture and the first pole face is separated from the second pole face by a guide magnet gap. A core is disposed within the centrally disposed apertures in an abutting relationship with both guide magnets. The core has at least one core gap. A drive coil is wound around both guide magnet pole faces. An orbit control coil has a contraction coil portion wound around the core gap and a bias control portion wound around the guide magnet pole faces. The contraction coil portion and the bias control portion are connected but in opposite polarity. Magnet fluxes in the core and guide magnets return through peripheral portions of the betatron magnet. | ||||||
| 36 | Tandem betatron | US643315 | 1991-01-22 | US5103186A | 1992-04-07 | Rhonald K. Keinigs |
| Two betatrons are provided in tandem for alternately accelerating an electron beam to avoid the single flux swing limitation of conventional betatrons and to accelerate the electron beam to high energies. The electron beam is accelerated in a first betatron during a period of increasing magnetic flux. The eletron beam is extracted from the first betatron as a peak magnetic flux is reached and then injected into a second betatron at a time of minimum magnetic flux in the second betatron. The cycle may be repeated until the desired electron beam energy is obtained. In one embodiment, the second betatron is axially offset from the first betatron to provide for electron beam injection directly at the axial location of the beam orbit in the second betatron. | ||||||
| 37 | Radiation sources in charged particle accelerators | US31226952 | 1952-09-30 | US2803767A | 1957-08-20 | BALDWIN GEORGE C |
| 38 | System and apparatus for obtaining a beam of high energy electrons from charged particle accelerators | US15324150 | 1950-03-31 | US2640923A | 1953-06-02 | POLLOCK HERBERT C |
| 39 | Field correction in magnetic induction accelerators | US18202550 | 1950-08-29 | US2558597A | 1951-06-26 | WESTENDORP WILLEM F |
| 40 | BETATRON MIT EINEM JOCH AUS PULVERVERBUNDWERKSTOFF | EP07818057.7 | 2007-09-06 | EP2082628B1 | 2018-01-31 | BERMUTH, Jörg; GEUS, Georg; HESS, Gregor; VIEHBÖCK, Urs |
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