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Device for storing a source of photons and for irradiating a body by the radiation from said source
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Inventors: Brethon, Jean-Pierre; Guiho, Jean-Paul; Taniel, Gerard; Viel, Georges;
Assignee: Commissariat a l'Energie Atomique (Paris, FR); Societe CGR-MeV (Buc, FR)
Primary Examiner: Dixon; Harold A.
Assistant Examiner:
Attorney, Agent or Firm: Meller; Michael N., Handal; Anthony H.
A device for storing a source of photons and for irradiating a body by the radiation from said source, comprising a body for biological protection provided with a cylindrical cavity of circular section and two so-called first and second passages respectively, these passages opening at one and the other of their ends in said cavity and on the outer wall of the body, a disc for biological protection, whose shape is complementary of that of the cavity of the body and presenting, on the one hand, a housing centered on an axis perpendicular to the axis of the cavity, this housing opening out on the side wall of the disc, a source of Y radiation contained in said housing, a precollimator disposed at right angles to said first passage, means for rotating said disc between a first position for which said source is opposite the precollimator and a second position for which the source is in stored position. |
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DETAILED DESCRIPTION What is claimed is: 1.
A photon storing and irradiation device having a radiation shielded body comprising a cylindrical container of circular cross section, having an axis (A), in said body; a disk housing located in said cylindrical container, dimensioned slightly smaller than that of said cylindrical container; a cylindrical gamma radiation containing housing in said disk, said housing having an opening on the periphery of the disk, with an axis perpendicular to axis (A) when the disk is rotated inside said body; said disk also containing a passage having an opening at one and the other of its ends at the periphery of the disk and capable of being located simultaneously opposite an optical device and a precollimator located in the walls of said cylindrical container and connected by an optical fiber, the ends of which, respectively called the receiver and emitter are located at right angles to each end of said passage via dismountable fixing means, and also having an optical device adjacent said body capable of producing a ray of light onto the receiver of said fiber; means for rotating said disk between a first position enabling said housing to irradiate a desired object for which the axis of said housing axis coincides with the axis (Y,Y) of the precollimator, and a second position for which said irradiation source is in a stored position while enabling the optical device by means of the optical fiber to produce a ray of light at the precollimator; and a part having an axis (Y,Y) perpendicular to axis (A) in the bottom of said body with said precollimator disposed at right angles to said port of axis (Y,Y).
2.
The device of claim 1, wherein the axis of the receiver and emitter ends of the optical fiber define an angle close to 90.
degree.
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3.
The device of claim 1, comprising electrical means for locking the disk in said first position.
4.
The device of claim 1, wherein the disk is made of sintered tungsten.
5.
The device of claim 1, wherein the body is constituted by a mass of lead in which is included a block of depleted uranium, this block defining the portion of the wall of the cavity located around said source when said disk is in said second position
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