JPH0465100A - Septum magnet holding device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a septum magnet for holding a septum magnet used for introducing charged particles into a synchrotron device, an electron storage ring device, etc. Relating to a holding device.

[Prior Art] As shown in FIG. 6, for example, in an electron storage ring device in which the inside of the side body is maintained in a vacuum and the body forms an annular shape, the inside of the body, which is maintained in a vacuum, is moved in the longitudinal direction of the body. The body is provided with a magnet for deflecting the traveling direction of the electrons, a magnet for focusing the electrons, etc. so that the electrons circulate along the . Further, a vacuum chamber 50 is provided in a part of the body constituting the electron storage ring device, which is an introduction part for introducing new electrons into the orbit of the circulating electrons from outside the device.

As shown in FIG. 7, electrons are incident on the vacuum chamber 50 from outside the vacuum chamber 50 at an angle of about 23 degrees with respect to the center orbit 51 of the circulating electrons. Inside, a septum magnet 52 is provided which deflects the traveling direction of the incident electrons so that the traveling direction of the incident electrons is finally parallel to the central orbit 51. In many cases, the septum magnet 52 has a fixed electron exit opening, and a bellows 53 is used so that only the horizontal position of the electron entrance opening can be adjusted.

[Problems to be Solved by the Invention] As described above, the septum magnet 52 is semi-fixed to the vacuum chamber 50, and 1. The vacuum chamber 50 to which the septum magnet 52 is semi-fixed is an annular electron storage ring. Part of the circumference of the device and 1. Fixed.

Therefore, when the electron storage ring device is assembled and operated, for example, if it is found that the position of the electron entrance port of the septum magnet 52 is shifted in the horizontal direction, the length of the bellows 53 is adjusted 1. However, in other cases, for example, if it is found that the final traveling direction of the incident electrons is vertically deviated from the center orbit 51, the installation position of the septum magnet 52 may be adjusted. Therefore, the main body of the vacuum chamber 50 must be moved.

However, since the vacuum chamber 50 is a component part of an annular electron storage ring device, there are The horns are working.

Therefore, it is not easy to move the vacuum chamber 50 to a desired position, and care must be taken not to apply force beyond the permissible range to other components of the electron storage ring device. Even if the tank 50 is installed at the desired position, the septum magnet 52 fixed inside it is not necessarily installed at the desired position.In this way, after the electron storage ring device is assembled, the septum magnet 52 is There was a problem in that it was difficult to adjust to a desired position.

The present invention has been made to solve these problems, and an object of the present invention is to provide a septum magnet holding device that allows easy adjustment and movement of the septum magnet even after assembly of the electron storage ring device. .

[Means for Solving the Problems] The present invention provides a magnet holder for holding a septum magnet provided inside the device to adjust the traveling direction of charged particles introduced from the outside of the device into the inside of the device; The apparatus is characterized by comprising a magnet holder moving means capable of moving the magnet holder from outside the apparatus.

[Function] The magnet holder holds a septum magnet that is provided inside the device and is not fixed to the device, and the magnet holder moving means holds the septum magnet 1- inside the device. This function allows the magnetic holder to be moved from outside the device.

[Example] Figure 2 shows the structure of an example of the Seven Buta J1 magnet holding device of the present invention! In Figure 77b, Figure 2 is a front view, Figure 3 is a plan view, Figure 4 is a side view, and Figure 5 is a partial sectional view. ．． I'm here.

FIG. 1 shows the use of the septum magnet holding device of the present invention in an electron storage ring device. The direction of illustration is the same as that of FIG. 7 described above, and FIG. 7 shows a state in which the septum magnet holding device of the present invention is attached to a vacuum chamber 50. Furthermore, since the magnet holder la and lb portions are provided inside the vacuum chamber 50, the connecting rod fixing plate 7 is partially cut away in this figure to illustrate the magnet holder ia and Xb portions.

This septum magnet holding device is an electronic storage ring device W.
It is a component part of the vacuum chamber where electrons are incident.
When installing this septum magnet holding device, the septum magnet is not fixed to the vacuum chamber as in the conventional case, but is held by this septum magnet holding device.

As shown in FIGS. 2 and 4, the upper surface 31 and the lower surface 32 of the magnet holders 1 & 9Ib, each having a mouth-shaped shape having four parts 30, have screw holes in four places corresponding to each color of the rectangular shape. A fixing bolt 33 is screwed into this screw hole from the upper surface 3 and the lower surface 32 toward the recess 30 in order to take the septum magnet 52 into the recess 30 and fix it.

Moreover, the upper surface 31 of each of the magnet holders 1a and 1b
A connecting rod 34, which will be described later, is fixed at right angles to the upper surface 31. At this time, the magnet holders la, 1l] are fixed in different directions at right angles to the line connecting the connecting rods 34, as shown in FIGS. 4 and 5. this is,
This is to fix the septum magnet 52 which is curved as shown in FIGS. 1 and 7, and the amount of deviation is as follows:
It is determined according to the curvature of the septum magnet 52.

In addition, magnet boulder 1a. The openings of the respective recesses 30 in 1b are oriented in the same direction.

The respective connecting rods 34 to which the magnet holders la and lb are fixed in this way are arranged at appropriate intervals,
An adjustment mechanism for moving the connecting rod 34 extends perpendicularly through the flange 5 located on the upper surface 5a.

At the upper surface 5a of the flange 5, an extending connecting rod 34
A bellows 2 is provided which surrounds each connecting rod 34 and is made of, for example, stainless steel and has a bellows structure that is extendable and movable in the longitudinal direction and the width direction. This bellows 2 is attached to magnet holders Ia and Ib in vacuum pressure.
And, the upper gt under atmospheric pressure that fixes the connecting rod 34 extending from the magnet holders 1a and 1b! It forms a pressure boundary with the jJJ adjustment mechanism, and operates in a manner that allows it to expand, contract, and move. Such a bellows 2 is provided with mounting flanges 2a and 2b at both ends in the longitudinal direction.The mounting flange 2a is fixed to the upper surface 5a of the flange 5 by welding, and the mounting flange 2b is fixed to the lower surface of the connecting rod fixing plate 7. 7b by welding. Further, each connecting rod 34 passes through the connecting rod fixing plate 7 at right angles and is fixed by, for example, welding on the surface 7a of the connecting rod fixing plate 70L. Therefore, as the connecting rod fixing plate 7 moves, the magnetic holders 1 a,
l b can move.

The connecting rod fixing plate 7 has a rectangular shape as shown in FIGS. 3 and 4, and is defined by the center line -1- in the longitudinal direction. 7. Each connecting rod 34 is fixed. Further, at the four corners of the connecting rod fixing plate 7, adjustment seat plates 35 made of square pillars whose longitudinal dimension is much longer than the plate thickness of the connecting rod fixing plate 7 are connected to the approximately central part in the longitudinal direction. Rod fixing plate 7
Fixed to match. Each of these adjustment seat plates 35 is provided with a screw hole that passes through the adjustment seat plate 35 in the longitudinal direction, and the adjustment seat plate 35 extends from the upper surface 7a side of the connecting rod fixing plate 7 toward the lower surface 7b. The height adjustment bolt (3) that extends through the height adjustment bolt (3) is screwed in.
The tip has a pointed shape and contacts the upper surface 5a of the flange 5. Therefore, the connecting rod fixing plate 7 is erected on the flange 5 with four height adjustment bolts 3 provided at the four corners, and by rotating each height adjustment bolt 3, the adjustment seat plate can be adjusted. The connecting rod fixing plate 7 to which the connecting rod fixing plate 7 is fixed can be moved up and down in FIGS. 2 and 4, or the horizontality of the connecting rod fixing plate 7 can be adjusted in FIGS. 2 and 4. .

The connecting rod fixing plate 7 installed on the flange 5 in this way
The lateral sides in the longitudinal direction and the width direction are rectangular and are provided with appropriate intervals from each side surface, and the A side plate 3 is provided in the longitudinal direction.
6. In the width direction, a B side plate 37 is vertically provided on the upper surface 5a of the flange 5. Such A side plate 36 and B side plate 3
7, each of the portions facing the side surfaces of the adjustment seat plate 35 provided on the connecting rod fixing plate 7 has inner side 36b, 3 inner side than outer side 36a, 37a of each side plate 36.37 of A and B.
One screw hole is provided in each case, penetrating in the direction 7b. A width direction adjustment bolt 48 is screwed into each screw hole provided in this way from the outside 369 of the A side plate 36 to the inside 361) direction, and the longitudinal adjustment bolt 48 is screwed from the outside 37a of the B side plate 37 to the inside 371) direction. The bolt 4b is screwed in. Width direction and longitudinal direction adjustment bolts 4a and 4b
The tip of each width direction adjustment bolt 4a also has a pointed shape.
The tip end of each bolt 4b contacts the side surface 35a of the adjustment seat plate 35, and the tip end of each longitudinal adjustment bolt 4b contacts the side surface 35b of the adjustment seat plate 35. Therefore, the connecting rod fixing plate 7 If you want to move the width direction adjustment bolts 4a in the width direction, for example, rotate the two width adjustment bolts 4a on the same side of the four width adjustment bolts 4a in the screwing direction, and move the two width adjustment bolts 4a on the other side. By rotating the bolt 4a for adjusting the width direction of the book in the pulling direction, the connecting rod fixing plate 7 can be moved in the width direction. Also, the connecting rod fixing plate 7 can be moved in the longitudinal direction. If you want to adjust the position; 1 has 4 longitudinal adjustment poles)
・Two longitudinal adjustment ports 1 on the same side of 4b
For example, by rotating 4b in the screwing direction and rotating the two longitudinal adjustment holes on the other side in the pulling direction, the connecting rod fixing plate 7 can be moved in the longitudinal direction. By rotating all of the widthwise and longitudinally adjusting bolts 4a and 4b by an appropriate amount, the connecting rod 34 can be moved in the direction A or B as shown in FIG. .

Note that when the connecting rod fixing plate 7 moves in the width direction or the longitudinal direction, no unreasonable force is applied to the bellows 2. Further, when the connecting rod fixing plate 7 moves in the width direction or the longitudinal direction, the magnet holders 1 a and 1 b also move accordingly.

A septum magnet 52 is fixed at a predetermined position on the magnet boulders 1a and 1b, and the flange 5 provided with an adjustment mechanism forms a vacuum chamber 50 for introducing electrons into the electron storage ring device, as shown in FIG. The magnet holders 1a and 1b are placed inside the vacuum chamber 50. First, the operation of the electron storage ring device is actually started.

If the direction of incidence of the electrons introduced after the vacuum chamber 50 has been incorporated into the electron storage ring device and the device has started operating is shifted from the direction of the center orbit of the electrons circulating in the device, If it is determined, according to the septum magnet holding device of this embodiment, the height adjustment bolt 3 and the width direction adjustment bolt 4a can be removed from the outside of the vacuum chamber 50 without moving the vacuum chamber 50 body as in the conventional case. , and by rotating the longitudinal direction adjustment bolt 4b, the septum magnet 52 provided inside the vacuum chamber 50 and fixed to the magnet holders 1a and 1b can be moved, and the incident direction and orbit of the introduced electrons can be moved. It is possible to easily match the direction of the center orbit of the electrons. Incidentally, once the septum magnet 52 is installed at a predetermined position, the height adjustment bolt 3, the width direction adjustment bolt 4&, and the longitudinal direction adjustment bolt 4b are prevented from rotating by an appropriate method.

Furthermore, instead of moving the septum magnet 52 by moving the vacuum chamber 50 as in the conventional case, it is possible to move the septum magnet 52 directly as described above, so that the septum magnet 52 can be moved to a predetermined position. can be easily moved to the desired position in a short time. Therefore, the time required to start up an electron storage ring device or the like can be shortened.

Furthermore, if a dial gauge is installed on each of the height adjustment bolt 3, width direction adjustment bolt 4a, and longitudinal direction adjustment bolt 4b, the amount of movement of each bolt can be known, and the installation position of the septum magnet 52 can be determined. It can be identified almost accurately.

Although this embodiment describes the case where a septum magnet holding device is installed in an electron storage ring device, the present invention is not limited to this, and it can be used in the charged particle introduction part of other devices that accelerate charged particles. There's nothing I can say.

[Effects of the Invention] - As described in detail, according to the present invention, the septum magnet is not fixed to the mounting W but is held by the magnet holder,
Since the magnet holder is movable from outside the device using a magnet holder moving means, it is easy to locate the septum magnet inside the device from outside the device.
= Can be adjusted.

[Brief explanation of drawings]

Fig. 1 is an overall view showing an embodiment of the septum magnet holding device of the present invention, Fig. 2 is a front view showing an embodiment of the septum magnet holding device of the present invention, and Fig. 3 is a plan view of Fig. 2. , Figure 4 is a side view of Figure 2, Figure 5 is A- in Figure 2.
6 is a plan view showing the overall shape of the electron storage ring device, and FIG. 7 is a diagram showing a conventional vacuum chamber. la, 1b...Magnet holder, 3...Height adjustment bolt, 4a...Width direction adjustment bolt, 4b...Longitudinal direction adjustment bolt, 34...Connecting rod.

Claims (1)

[Claims] (1) A magnet holder that holds a septum magnet provided inside the device to deflect the traveling direction of charged particles introduced into the device from outside the device, and moving the magnet holder from outside the device. A septum magnet holding device comprising: a means for moving a magnet holder; and a means for moving a magnet holder.