DE1919097A1 - Device for deflecting charged particles - Google Patents

Description

17 152/3

MITSUBISHI DENKI KABUSHIKI KAISHA ₉ Tokyo / Japan

Device to distract charged people

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BATH ORIGINAL

Erflndungsgemäß this is achieved by _a öaü the red portion is flexible and in that to this flexible tube portion around a plurality of magnets arranged _fl whose main faces are inclined to form an angle © against each other.

An advantageous embodiment of the invention is ³ gekennaeiehnet -dadurch, which have the individual magnets Polstuek @ ^ and that arranged at these Polsfcückeia guide elements that the flexible tube portion

Magnets can optionally be Eloktro · = boring

Serene Einzelheitesi äes> Irflndung should iferden in more detail below with reference to an exilaterfe Ausführungsfoeisplels and beseteiebeH. at the. attached 2eielii «mg Related geaoieesi late Es geigens

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lsi following is intended to AELE E @ sizing = Insbegonäere Figo 1 Besag geaoümea tmi? ä®n ₂ lsi uelcher ice © forgegebeste a lu-tasting suction pipe section 10 is dargestellfe ₅ diareh wel Uh% n a alcht illustrated beam won charged Telle Lien

BATH ORIGINAL

led let * A ring-shaped electromagnet 12, its geometry the curvature of the pipe section 10 is adapted, allows deflecting the charged particle beam within of the pipe section IO in a known manner. It results that the deflection device shown deflects the beam only along a predetermined curvature the curvature of the pipe section 10 allows.

In the following, reference should be made to FIG. 2, in which a deflection device according to the invention is shown. The deflecting device according to the invention consists of a flexible pipe section - for example a bellows 20 - and a plurality of ring-shaped electromagnets 22 which, lying close to one another, form an essential part of the pipe section 20. The opposite main surfaces of the electromagnets 22 are inclined with respect to one another in such a way that an acute angle results between them. The individual electromagnets 22 are connected to one another with the aid of a schematically indicated support element 24, which holds the electromagnets 22 in place, although it is possible that they are rotated independently of one another. The individual support elements 2h are preferably white ball bearings, as will be described in connection with FIG. 5.

According to FIG. 2, the electromagnets 22 are arranged in such a way that the narrower ends thereof come to lie alternately next to the wider ends of the electromagnets lying next to them. As a result, the longitudinal axis of the pipe section 20 is essentially straight. If this should be desired, at least one of the electromagnets 20 can be connected to a stationary plate via the corresponding support element 2k , although this is not particularly shown in FIG.

909843/1310 ORIGINAL BATHROOM

As shown in Figure 4, each is an electromagnet 22 provide on its inner surface with a pair of diametrically opposed pole pieces 26 extending up to Reach close to the pipe section 20. On that of the PoI pieces 2 (S an excitation winding 28 is arranged. On both Encen of the pole pieces is a pair of made from a suitable one Non-magnetic material - for example non-magnetic stainless steel or copper - existing guide elements 30 arranged in such a way that they encompass the pipe section 20. This ensures that the pipe section 20 is in the desired position with respect to the electromagnets 22 is held. The flexible pipe section 20 can therefore not get out of the area of the electromagnet 22.

Each of the electromagnets 22 can be independent as desired be rotated by the other electromagnets by a certain angle ge, in which position he is by means of the support elements is held. By pivoting - for example every second electromagnet 22 - by 180 °, the deflecting device can move from the position shown in FIG. 2 into the are brought into position shown in Fig. 3, in which the flexible pipe section 22 together with the electromagnet 22 assumes a curved shape.

While changing the configuration of the flexible deflection device by rotating the individual electromagnets 22, the separation of the pipe section 20 from the electromagnets 22 results in the pipe section 20 being in the desired shape ₃ , however, the guide elements 30 ensuring that the pipe section 20 faces the electromagnets 22 assumes a concentric position.

The individual electromagnets 22 direct the existing within the curved pipe section 20 of charged beams Particles according to FIG. 3 each time by a small angle until the beam leaves the pipe section 20. Under the

909843/1310

^^ BAD

A prerequisite that each of the η electromagnet 22 causes a deflection by an angle> _Λ , the deflection device shown in FIG. 3 can deflect a beam by an angle of at most η χ θ. It is evident that the deflector _s invention can be built 3ehr cheap in such an embodiment of the electromagnet 22nd

It should be understood that some of the electromagnet ₃ can be pivoted in such a way with respect to the adjacent Elektroraasnetcn 22, that the pipe section 20, not only occupies any ζweidimensionalen ₃ but also three-dimensional angle, the maximum possible angle η χ Θ is.

Pig 5 shows an embodiment of the support element 24 in the form of a ball bearing having a fixed to dom electromagnet 22 outer ring 32 and secured to the adjacent electromagnet 22 inner ring 3 ¹ J, wherein a plurality of balls 36 in two rows is arranged between which a ring shoulder 33 protruding from the outer ring 32 comes to rest.

The present invention can be used to deflect charged beams Particles used for various purposes will. For example, it can be used to irradiate samples in a particle accelerator. In this Case, the beam exiting the accelerator from charged particles the sample under iodem possible Winekl irradiate without having to adjust the accelerator or the sample.

If this should be desired, the electromagnet can be used instead 22 permanent magnets or other suitable electromagnetic deflection windings or suitable electrostatic Deflectors can be used in the same way. Furthermore, the electromagnets 22 do not have to have a common deflection angle have θ. It is thus possible., Electromagnets to be provided with different convergence angles.

909843/1310 BM) ORKUNAL

Claims (4)

PATENT CLAIMS 1. Deflection device for deflecting a beam of charged particles along a pipe section around which one or more magnets are arranged., Characterized in that the pipe section (20) is flexible and that around this flexible pipe section (20) a A plurality of magnets (22) is arranged _3, the main surfaces of which are inclined to one another, forming an angle Θ. 2. deflector ₃ that the flexible tube section is in the form of a bellows (20) according to claim I characterized _9. 3) The redirecting device according to claim 1 or 2 _t characterized in that each magnet (22) pole pieces (26 ·) and in that (2β) guide elements (30) are arranged at these Polstückon; which surround the flexible pipe section (20). 4) deflection device according to any one of claims 1 to 3j characterized in that the support elements (24) present between the individual magnets (22) are ball bearings are. 5Ablenkvorrichtung according to any one of claims 1 to 4, characterized in _t that the magnets (22) are solenoid e. ■ 909843/1310