2.
    发明专利
    未知

    公开(公告)号:FR2444390A1

    公开(公告)日:1980-07-11

    申请号:FR7835383

    申请日:1978-12-15

    Applicant: CGR MEV

    Inventor: TRONC DOMINIQUE

    Abstract: Magnetic system making it possible to obtain from a pulsed electron beam supplying bunches of electrons of density do, a pulsed beam formed from electron groups of density k do, said result being obtained by converting the variation of the momentum of the electrons emitted during the time DELTA t of the pulse into a length variation of the paths of said electrons, resulting in regrouping or rearrangement of the electrons within the bunch. This magnetic system has at least one electromagnet equipped with several pairs of pole pieces A, B, D defining a succession of air gaps in which are created, by means of at least one annular coil disposed therein, magnetic fields of different values.

    LINEAR PARTICLE ACCELERATOR USING MAGNETIC MIRRORS

    公开(公告)号:CA1027677A

    公开(公告)日:1978-03-07

    申请号:CA219210

    申请日:1975-02-03

    Applicant: CGR MEV

    Abstract: A particle accelerator for obtaining high energy particle beams, comprises an accelerating structure SA, one mirror or two mirrors constituted with magnetic achromatic and stigmatic deviators and a source K of particles located at the entry of the accelerating structure SA and having an annular shape allowing the accelerated particles having passed twice through the accelerating structure SA to cross the source K, the axis of the source K being coincidental with the axis of the accelerating stucture SA. Magnetic fields are determined in such a manner that the mirrors totally reflect the particles having a predetermined energy level and totally transmit the particles having an energy level higher than this predetermined energy level.

    Particle accelerator device including a subharmonic cavity

    公开(公告)号:FR2612726A1

    公开(公告)日:1988-09-23

    申请号:FR8703925

    申请日:1987-03-20

    Applicant: CGR MEV

    Abstract: The invention relates to a charged particle accelerator device including a subharmonic cavity 3 allowing formation of the particles by cluster 60. The subharmonic cavity 3 is arranged between a particle source 2 and an accelerator structure 4 comprising a succession of accelerator cavities (C1,...,Cn). The particle current is modulated in the subharmonic cavity 3 by an electromagnetic wave O2. An entrance plane 30 of the subharmonic cavity 3 and a second entrance plane 31 of a first accelerator cavity C1 are situated at a given distance D from one another, along a longitudinal axis 9 of the accelerator structure 4. According to a characteristic of the invention, the value of the ratio of the said distance D to the wavelength lambda 2 of the electromagnetic wave O2 is less than 0.3.

    Device for pregrouping and accelerating electrons

    公开(公告)号:FR2587164A1

    公开(公告)日:1987-03-13

    申请号:FR8513416

    申请日:1985-09-10

    Applicant: CGR MEV

    Inventor: TRONC DOMINIQUE

    Abstract: Device for pregrouping and accelerating electrons with the aid of an alternating electric field of the same direction as the path of the electrons. This device comprises two juxtaposed cavities 13, 14. The amplitude of the electric field in the entrance cavity is less than the amplitude of the electric field in the second cavity 14. These fields are such that the grouping and accelerating of the electrons are performed over the length of these two cavities 13, 14. Preferably, in the entrance resonant cavity 13, the amplitude of the field is less than a limit value such that, when this field has its maximum value and is directed such that it opposes the advance of the particles, the latter nevertheless cross the cavity.

    DEVICE FOR THE ACHROMATIC MAGNETIC DEFLECTION OF A BEAM OF CHARGED PARTICLES AND AN IRRADIATION APPARATUS USING SUCH A DEVICE

    公开(公告)号:CA1152232A

    公开(公告)日:1983-08-16

    申请号:CA348936

    申请日:1980-04-01

    Applicant: CGR MEV

    Inventor: TRONC DOMINIQUE

    Abstract: A DEVICE FOR THE ACHROMATIC MAGNETIC DEFLECTION OF A BEAM OF CHARGED PARTICLES AND AN IRRADIATION APPARATUS USING SUCH A DEVICE An achromatic magnetic deflection device for deflecting by an angle ? between .pi. and 2.pi. a beam of charged accelerated particles having different momentum. This device comprises an electromagnet provided with pole pieces delimiting three contiguous sectors, the whole of these sectors, having an axis of symmetry XX, presenting flat input E and output S faces and common faces F1 and F2 in an arc of a circle, the position, the radius of curvature of these faces F1, F2 as well as the value of the magnetic induction in the sectors being chosen so that the different paths are substantially orthogonal both to faces F1, F2 and to axis XX.

    MAGNETIC MIRROR FOR BEAMS OF CHARGED PARTICLES ACCELERATED IN AN ACCELERATOR

    公开(公告)号:CA1121524A

    公开(公告)日:1982-04-06

    申请号:CA326034

    申请日:1979-04-20

    Applicant: CGR MEV

    Abstract: Magnetic mirror enabling a beam F of charged particles to be reflected along its incident path whatever the value W of the momentum of said particles. This magnetic mirror includes a first magnetic deflector having polepieces of circular shape, a second and a third magnetic deflector provided respectively with pairs of polepieces arranged symmetrically with regard to an axis XX coinciding with the mean incident path of the beam F, the entry and exit race of these polepieces being determined in such a way that the beam F emerging from the second magnetic deflector is perpendicular to the symmetry axis of the mirror and that the vertical divergence of the beam is compensated.

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