SU1511723A1 - Apparatus for monitoring the bundles of radiation - Google Patents

Abstract

The invention relates to the control of radiation beams and can be used to control electron beams output from accelerators through a collimation system. The purpose of the invention is to increase the productivity and spatial resolution of the control. For this, the device has a fixed 3 and a movable 6 on the guides 7 of the flap. Metal rods (needles) 5 are rigidly fastened in the shutter 6, and holes 4 are made under the shutter 3. On the rods 5, a fixing plate 8 is seated on the rods, moving along the rods 5 by means of the rod 9. The rods 5 pierce a sheet of photographic paper placed on the shutter 3, and hold it in the desired position, given by the shutter 6 and the fixing plate 8. 7 Il.

Description

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The invention relates to the control of radiation beams and can be used to control electron beams output from accelerators through a collimation system.

The purpose of the invention is to increase the performance and spatial resolution of the control.

Figs 1 and 2 show, respectively, a device for monitoring radiation beams, viewed from the front and from the side; Figures 3-7 are diagrams explaining the sequence of operations when operating the device. The device contains a flange 1, with which it can be mounted on the collimator 2 for outputting radiation. A flange 1 is fixedly mounted a flap 3 in which holes 4 are made under the metal rods (needles) 5 The rods 5 are rigidly mounted in a flap 6y which can be moved in 7, between the flaps 3 and 6, a fixing plate 8 is placed, which is rigidly fixed on the rod 9o. In the shutter 6 for the stem 9, an opening is made, thanks to which, by means of the stem 9, the fixing plate 8 ,. In which the holes for the rods 5 are made, it is possible to move in the gap between the flaps 3 and 6. The flap 6 for convenience of its movement is provided with handles 10. When the device is manufactured, a sliding fit of the flap 6 on the guides 7 and the stem 9 in the flap opening 6, prep the movement of the flap 6 and the fixing plate 8 under the influence of their force T

The device works in the following way.

By means of a flange, the device is fixed on the collimator 2, relative to which it is necessary to align the radiation beam. The device is positioned in such a way that the plane in which the direction and divergence of the beam must be determined is between the flaps 3 and 6 and is parallel to it. The photo paper sheet 11 is placed in an opaque 1st envelope, and the photo paper is cut out strictly to the size of the envelope, excluding the arbitrary movement of the sheet in the envelope. If necessary, measurement can be

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lead in red light, which excludes the use of an envelope. A rectangular envelope —or a sheet of 11 photo paper is placed on the flap 3 (Fig. 3) so that the sides of sheet 11 are parallel to the sides of the plate forming the flap 3. Moving the flap 6 along the guides 7 of the rod MI 5, they punch a sheet of photo paper 11 (Fig. 4) and retract the flap 6 to its original position (Fig. 5). Due to the strength of the friction between the rods 5 and the photo paper sheet 11, the sheet 11 moves

together with the flap 6 and the locking plate 8 to the position shown in FIG. 5o Next, by moving the fixing plate 8 with the help of the rod 9, set the photo paper sheet 11 in

0 is the position required for the measurement (Fig. 6) and the fixing plate-i 8 is retracted to the initial position (Fig. 7). In the position shown in FIG. 7, photo paper sheet 1 is irradiated with a beam

5 from the collimator 2. Due to the absorption of radiation in the material of the rods 5 on the sheet 11 of the photo paper, shadows are formed, the direction of which corresponds to the direction of movement of the particles

0 at the location of the corresponding rod 5.

Claims (1)

Claims Beam control device 5. Radiation radiation, comprising a cassette with two shutters for accommodating a flat image carrier, a system of metal rods for placement in holes in 0 flat image carrier, a flange for fastening a cassette and connecting to a collimator for drawing, which means that, in order to increase the production and spatial resolution of the control, the system of metal rods is rigidly fixed in one of the cassette leaves, in the other casement of which a system of holes is made, geometrically coupled with a system of metal rods, guides are introduced, on which the first door is mounted with the possibility of plane-parallel movement relative to the second structure in the direction perpendicular to the plane of the second flap, which is fixed on the indicated guides, and fic: a sirou plate with moving through a Hole made in the first curtain, the retaining plate associated with the rod being attached to the system of metal rods serving as guides for the fixed plate. fie. 2 Fiz. Fiz.7