阅读说明：本技术 一种用于同位素二极磁铁装置中的法拉第筒 (Faraday cylinder for isotope dipolar magnet device ) 是由 徐龙飞 姚俊杰 王旺林 刘广生 张亚龙 张进龙 冯英德 于 2021-08-05 设计创作，主要内容包括：本发明公开了一种用于同位素二极磁铁装置中的法拉第筒,包括筒体、导杆、束流接收组件和驱动组件；束流接收组件包括支撑架、束流接收器、抑制电极和保护罩,所述支撑架的一端通过电极组法兰与导杆固定连接；所述束流接收器呈锥形,束流接收器连接于支撑架上,且束流接收器相对于导杆轴线倾斜设置,束流接收器开口较大的一端朝向束流方向；所述抑制电极连接于束流接收器的上部且与束流接收器顶部平行设置；所述保护罩连接于束流接收器的顶部,保护罩的中心设有束流接收孔。(The invention discloses a Faraday cylinder used in an isotope dipolar magnet device, which comprises a cylinder body, a guide rod, a beam receiving assembly and a driving assembly, wherein the cylinder body is provided with a guide rod; the beam receiving assembly comprises a support frame, a beam receiver, a suppression electrode and a protective cover, wherein one end of the support frame is fixedly connected with the guide rod through an electrode group flange; the beam receiver is conical, connected to the support frame and inclined relative to the axis of the guide rod, and the larger end of the beam receiver faces the beam direction; the suppression electrode is connected to the upper part of the beam current receiver and is arranged in parallel with the top of the beam current receiver; the protective cover is connected to the top of the beam current receiver, and a beam current receiving hole is formed in the center of the protective cover.)

1. A Faraday cage used in an isotope dipolar magnet device is characterized by comprising a cage body (3), a guide rod (4), a beam receiving assembly (5) and a driving assembly (6); the guide rod (4) penetrates through the cylinder body (3), the front end of the guide rod (4) extends out of the cylinder body (3), the beam receiving assembly (5) is connected to the front end of the guide rod (4), the driving assembly (6) is connected to the tail end of the guide rod (4), and the driving assembly (6) is used for driving the guide rod (4) to reciprocate along the cylinder body (3); the front end of the barrel (3) is provided with a connecting flange (11), and the barrel (3) is connected to the isotope dipolar magnet device (1) through the connecting flange (11);

the beam receiving assembly (5) comprises a support frame (51), a beam receiver (52), a suppression electrode (53) and a protective cover (55), and one end of the support frame (51) is fixedly connected with the guide rod through an electrode group flange; the beam receiver (52) is conical, the beam receiver (52) is connected to the front part of the support frame (51), the beam receiver (52) is obliquely arranged relative to the axis of the guide rod (4), and the end, with a larger opening, of the beam receiver (52) faces the beam direction; the suppression electrode (53) is connected to the upper part of the beam current receiver (52) and is arranged in parallel with the top of the beam current receiver (52); the protective cover (55) is connected to the top of the beam current receiver (52), and a beam current receiving hole is formed in the center of the protective cover (55).

2. The Faraday cage for an isotope diode magnet arrangement according to claim 1, wherein the support frame (51) is V-shaped, the angle of the V-shape is 130 °, and the angle of the top plane of the beam receiver (52) with the axis of the guide rod (4) is 50 °.

3. The faraday cup for use in an isotope diode magnet assembly of claim 2, wherein a beam signal detection point is further provided at a front portion of said beam receiver (52).

4. The faraday cup for an isotope diode magnet apparatus of claim 1, further comprising a displacement sensor (10), wherein the displacement sensor (10) is disposed within the barrel (3) and is drivingly connected to the guide rod (4).

5. The Faraday cylinder for the isotope diode magnet device according to claim 1, further comprising a water cooling assembly, wherein the water cooling assembly comprises a water cooling pipe, the water cooling pipe disc (7) is arranged on the guide rod (4) in the cylinder body (3), the front end and the rear end of the water cooling pipe are respectively connected with a water inlet pipe (8) and a water outlet pipe (9), and the water inlet pipe (8) and the water outlet pipe (9) are led out from the tail end of the cylinder body (3).

6. Faraday cage for use in an isotopic dipole magnet arrangement according to claim 1, characterized in that said drive assembly (6) comprises a stepper motor, a lead screw and a lead screw nut, said stepper motor being in driving connection with the lead screw, the lead screw nut being in driving connection with the guide rod (4).

7. The Faraday cage for an isotope diode magnet device according to claim 1, wherein the side wall of the cage (3) is provided with a guide groove (12) parallel to the axis of the cage, a scale (13) parallel to the guide groove (12) is fixed on the outer wall of the cage (3), an indicator sheet (14) is arranged in the guide groove (12), the tail end of the indicator sheet (14) is fixed on the guide rod (4), and the front end of the indicator sheet penetrates out of the guide groove (12) and points to the scale (13).

8. The faraday cage for an isotope diode magnet apparatus of claim 1, wherein the stroke length of the guide rod (4) is not less than 620 mm.

Technical Field

The invention belongs to the technical field of accelerator auxiliary equipment, and particularly relates to a Faraday cylinder used in an isotope dipolar magnet device.

Background

At present, the application element types and application fields of high-abundance stable isotopes are more and more extensive, an isotope electromagnetic separation method is the only feasible method for obtaining multiple isotopes of high-abundance Mo, W, Yb and the like, the isotopes are successfully applied to the fields of navigation, industry and agriculture, basic research and the like, the internationalization of isotope products is realized, and remarkable social benefits are obtained.

To date, 118 chemical elements have been discovered by humans. In the periodic table, isotopes having the same atomic number, different atomic masses, substantially the same chemical properties, and a half-life greater than 1015a are called stable isotopes. The number of stable isotopes found on earth is 274. The use of stable isotopes has been covered in many areas of human activity, including many areas of nuclear power engineering, basic science, medicine, biology and ecology.

The isotope electromagnetic separation method is the separation method with the best universality in all separation methods, and from the data published by the national laboratory of oak ridge in the U.S., 52 elements can be separated by the isotope electromagnetic separation method, wherein 32 elements can only be separated by the isotope electromagnetic separation method.

Among the various separation methods of stable isotopes, the main advantages of the isotope electromagnetic separation method are: the method has good universality and can be used for separating almost all isotopes of the polynucleotide elements; the flexibility is high, and the separation object can be changed within a few days; the separation coefficient is large, and the single-stage separation can reach hundreds or more; the raw material retention is small, and mg-level substances can be operated; the equilibrium time is short, and the concentrated isotope product can be collected after the machine is started for hours. The faraday cage plays an important role in capturing beam intensity and direction.

The problems of the existing Faraday cage are as follows:

1. the stroke length of the conventional Faraday cylinder is 250-300 mm, and the swing error of the target head in the forming range is +/-3 mm.

2. In the prior art, an included angle is not formed between the mouth of the Faraday cup and the guide rod, and the measurement precision is inaccurate.

3. The guide rod of the original design scheme is not subjected to circulating water cooling, and when the guide rod is bombarded by high-energy ion beams in the use process, the guide rod is easy to generate heat and deform.

4. The originally designed cup mouth is cylindrical, and the abundance and the yield of the collected isotopes are not high.

Disclosure of Invention

The present invention provides a faraday cage for an isotope dipolar magnet apparatus, which aims to solve the above technical problems.

Therefore, the invention adopts the following technical scheme:

a Faraday cylinder used in an isotope dipolar magnet device comprises a cylinder body, a guide rod, a beam receiving assembly and a driving assembly; the guide rod penetrates through the cylinder body, the front end of the guide rod extends out of the cylinder body, the beam receiving assembly is connected to the front end of the guide rod, the driving assembly is connected to the tail end of the guide rod, and the driving assembly is used for driving the guide rod to reciprocate along the cylinder body; the front end of the cylinder body is provided with a connecting flange, and the cylinder body is connected to the isotope dipolar magnet device through the connecting flange;

the beam receiving assembly comprises a support frame, a beam receiver, a suppression electrode and a protective cover, and one end of the support frame is fixedly connected with the guide rod; the beam receiver is conical, is connected to the front part of the support frame and is obliquely arranged relative to the axis of the guide rod, and the larger end of the beam receiver faces the beam direction; the suppression electrode is connected to the upper part of the beam current receiver and is arranged in parallel with the top of the beam current receiver; the protective cover is connected to the top of the beam current receiver, and a beam current receiving hole is formed in the center of the protective cover.

Furthermore, the support frame is V-shaped, the included angle of V-shape is 130 degrees, and the included angle between the top plane of beam receiver and the axis of guide rod is 50 degrees.

Furthermore, a beam signal detection point is also arranged at the front part of the beam receiver.

Furthermore, the device also comprises a displacement sensor which is arranged in the cylinder body and is in transmission connection with the guide rod.

The water cooling assembly comprises a water cooling pipe, the water cooling pipe is coiled on a guide rod in the cylinder, the front end and the rear end of the water cooling pipe are respectively connected with a water inlet pipe and a water outlet pipe, and the water inlet pipe and the water outlet pipe are led out from the tail end of the cylinder.

Further, the driving assembly comprises a stepping motor, a lead screw and a lead screw nut, the stepping motor is in transmission connection with the lead screw, and the lead screw nut is in transmission connection with the guide rod.

Furthermore, the lateral wall of the barrel is provided with a guide groove parallel to the axis of the barrel, a scale parallel to the guide groove is fixed on the outer wall of the barrel, an indicating sheet is arranged in the guide groove, the tail end of the indicating sheet is fixed on the guide rod, and the front end of the indicating sheet penetrates out of the guide groove and points to the scale.

Further, the stroke length of the guide rod is not less than 620 mm.

The invention has the beneficial effects that:

1. the stroke length of the Faraday cup is 620mm, and the up-and-down swinging error of the target head in the stroke range is +/-1 mm.

2. An included angle of 50 degrees is formed between the beam receiver and the guide rod, so that the beam can be vertically focused in the beam receiver, the beam can be ensured to be vertically collected in the beam receiver, the capture abundance and the yield of the beam are effectively improved, and the design effect of the multi-angle target head is realized.

3. The water cooling assembly is additionally arranged on the guide rod, when the guide rod is bombarded by high-energy ion beams in the using process, the guide rod is prevented from being deformed due to heating, the service life of the guide rod is prolonged to 3-5 years from previous 1-2 years, and the service life of the guide rod is prolonged.

4. The beam receiver is designed into a conical cup shape, so that the receiving area of the beam is increased, and the focusing characteristic of the beam is effectively improved.

Drawings

FIG. 1 is a schematic view of the installation of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a front view of FIG. 2;

FIG. 4 is a cross-sectional view of FIG. 2;

FIG. 5 is a partial enlarged view of portion A of FIG. 3;

fig. 6 is a front view of the beam receiving module according to the present invention;

in the figure: the device comprises a 1-isotope dipolar magnet device, a 2-Faraday cylinder, a 3-cylinder, a 4-guide rod, a 5-beam receiving component, a 51-supporting frame, a 52-beam receiver, a 53-suppression electrode, a 54-beam detection signal connecting point, a 55-protective cover, a 6-driving component, a 7-water-cooling pipe disc, an 8-water inlet pipe, a 9-water outlet pipe, a 10-displacement sensor, an 11-connecting flange, a 12-guide groove, a 13-scale and a 14-indicator piece.

Detailed Description

The invention will be further described with reference to the accompanying drawings in which:

as shown in fig. 1 and 2, a faraday cage for use in an isotope dipole magnet apparatus includes a body 3, a guide rod 4, a beam receiving assembly 5, and a driving assembly 6. The guide rod 4 penetrates through the barrel 3 along the central axis of the barrel 3, the front end of the guide rod 4 extends out of the barrel 3, and the guide rod 4 is movably connected with the barrel 3 in a sealing mode, so that the guide rod 4 can move along the barrel 3 conveniently. The beam receiving assembly 5 is connected to the front end of the guide rod 4, the driving assembly 6 is connected to the tail end of the guide rod 4, and the driving assembly 6 is used for driving the guide rod 4 to reciprocate along the cylinder 3. The front end of the cylinder 3 is provided with a connecting flange 11, the cylinder 3 is connected to the isotope dipolar magnet device 1 through the connecting flange 11, wherein the structure in front of the connecting flange 11 is in an ultrahigh vacuum environment.

The beam receiving assembly 5 includes a support frame 51, a beam receiver 52, a suppression electrode 53, a beam detection signal connection point 54, and a protective cover 55. An electrode group flange is fixed at the front end of the guide rod, and the support frame 51 is fixed on the guide rod through the electrode group flange. The support frame 51 is V-shaped, the included angle of the V-shape is 130 degrees, and the horizontal section of the support frame is parallel to the axis of the guide rod 4. The beam receiver 52 is conical, the beam receiver 52 is connected inside the support frame 51 (as shown in fig. 6), the beam receiver 52 is inclined by 50 degrees relative to the axis of the guide rod 4, and the end of the beam receiver 52 with the larger opening faces the beam direction. The suppression electrode 53 is connected to the upper portion of the beam current receiver 52 and is arranged in parallel with the top of the beam current receiver 52, the protective cover 55 is connected to the top of the beam current receiver 52, a beam current receiving hole is formed in the center of the protective cover 55, and the beam current detection signal connection point 54 is connected to the support frame 51 and used for detecting a beam current signal.

The barrel 3 is internally provided with a water cooling component which comprises a water cooling pipe made of 304 stainless steel materials and is used for cooling the guide rod 4, so that the guide rod 4 is prevented from being deformed due to heating during bombardment of high-energy ion beams, the beam capturing precision is influenced, and the service life of a product is prolonged. The front end and the rear end of the water cooling pipe are respectively connected with a water inlet pipe 8 and a water outlet pipe 9, and the water inlet pipe 8 and the water outlet pipe 9 are led out from the tail end of the cylinder 3 (as shown in figures 3 and 4).

The driving assembly 6 comprises a stepping motor, a lead screw and a lead screw nut, the stepping motor is in transmission connection with the lead screw, the lead screw nut is in transmission connection with the guide rod 4, the stepping motor drives the lead screw nut to move linearly through the lead screw, and the lead screw nut drives the guide rod 4 to move linearly. A displacement sensor 10 is further arranged in the cylinder 3, the displacement sensor 10 is in transmission connection with the guide rod 4, and the displacement sensor 10 is used for detecting the moving distance of the guide rod 4, so that the stepping motor can control the guide rod 4 to move to enable the beam receiving assembly 5 to be aligned with the beam focus. The side wall of the cylinder 3 is provided with a guide groove 12 parallel to the axis of the cylinder, the outer wall of the cylinder 3 is fixed with a scale 13 parallel to the guide groove 12, the guide groove 12 is internally provided with an indicating sheet 14, the tail end of the indicating sheet 14 is fixed on the guide rod 4, and the front end of the indicating sheet penetrates out of the guide groove 12 and points to the scale 13.

It should be noted that the above are only some embodiments of the present invention, and it should be noted that, for those skilled in the art, many modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.