Space strontium optical clock vacuum built-in high temperature evaporation source device

Abstract

A space strontium optical clock vacuum built-in high-temperature evaporation source device, the vacuum electrode is electrically connected to the heating device through a flange, a vacuum chamber is arranged outside the heating device, and the vacuum chamber is connected to an ion pump, a collimation cavity, and an angle valve; in the heating device, bare heating wires are evenly arranged through machinable ceramics and installed around a clamp pot connected to the collimator, a thermocouple installation hole is reserved at the bottom of the clamp pot, the thermocouple and the heating wire are connected to an external temperature control through electrodes integrated in the flange, the entire clamp pot is arranged in an insulating base and a heat insulation cover, and is connected to the support column of the flange through universal bolts, and the flange is connected to the vacuum chamber through bolts. The device has the advantages of vacuum built-in, small size, good thermal insulation performance, low energy consumption, easy disassembly and assembly, etc., and can be widely used in the field of quantum bid evaluation technology.

Description

Technical Field

[0001] The invention belongs to the technical field of quantum bid evaluation, and in particular relates to a device placed in a vacuum for preparing strontium atoms. Background Art

[0002] Atomic optical clocks should be studied and researched to explore the integration, miniaturization and engineering of atomic clocks in response to the development needs of space navigation and other fields.

[0003] The National Time Service Center began the development of strontium-cooled atomic optical lattice clocks in 2006. It has completed the primary and secondary cooling preparation of strontium-cooled atomic samples, optical lattice loading, clock transition detection, closed-loop locking and experimental measurement of some key atomic physical parameters. It is currently making miniaturized design improvements on the second system in comparison with the first system to meet the development needs of space navigation. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the technical deficiencies of the existing strontium atom preparation device, such as vacuum external placement, poor thermal insulation performance, large size, and high power consumption, and to provide a space strontium optical clock vacuum internal high-temperature evaporation source device that is vacuum internal, small in size, has good thermal insulation performance, low energy consumption, and is easy to disassemble and assemble.

[0005] The technical solution adopted to solve the above technical problems is: the vacuum electrode is electrically connected to the heating device through a flange, a vacuum cavity is arranged outside the heating device, and the vacuum cavity is connected to the ion pump, the collimation cavity, and the angle valve;

[0006] The flange is: both ends of the flange body are processed with heat conduction and heat insulation grooves, at least one set of support frames are evenly arranged on the end surface of the heat conduction and heat insulation groove at the right end of the flange body, the right end of the support frame is processed with internal threads, and the center position of the flange body is processed with an electrode through hole, and the vacuum electrode passes through the flange through the electrode through hole;

[0007] The heating device is as follows: the insulating base and the insulating middle plate are connected by a universal bolt, the left end of the universal bolt is threadedly connected to the right end of the support frame, the left end of the clamp pot is connected to the insulating middle plate, a thermocouple is arranged between the clamp pot and the insulating middle plate, the thermocouple is electrically connected to the vacuum electrode, the right end of the clamp pot is connected to the collimator, the outer cover of the clamp pot is provided with a heating sleeve, the heating sleeve is provided with a heating wire, the heating wire is electrically connected to the vacuum electrode, the outer cover of the heating sleeve is provided with a heat insulation cover, and the left end of the heat insulation cover is connected to the right end of the heat insulation base plate.

[0008] The tongs pot of the present invention is as follows: the tongs pot body is a hollow cylindrical structure with an open right end and an internal thread and a closed left end, a thermocouple mounting hole is processed at the center of the left end of the tongs pot body, and at least 2 studs are evenly arranged on the left end surface of the tongs pot body.

[0009] The heat-insulating middle plate of the present invention is as follows: both left and right ends of the heat-insulating middle plate body are processed with middle plate heat-insulating grooves j which are concentric with the heat-insulating middle plate body, a middle plate thermocouple wire passing hole is processed at the center position of the heat-insulating middle plate body, at least two stud holes are evenly distributed on the end surface of the middle plate heat-insulating groove, the free end of the stud passes through the stud hole and is fixed by a self-locking nut, at least two middle plate universal bolt holes are processed on the end surface of the heat-insulating middle plate body, and a middle plate heating wire wire passing hole is processed on the end surface of the heat-insulating middle plate body.

[0010] The insulating base of the present invention is as follows: the insulating base body is a stepped circular plate with different diameters at the left and right ends, an external thread is processed on the outer circumference of the right end circular plate, both ends of the insulating base body are processed with base insulating grooves concentric with the insulating base body, the center position of the insulating base body is processed with a base thermocouple wire hole, at least 2 base universal bolt holes are evenly distributed on the outer end surface of the insulating base body, and a base heating wire wire hole is processed on the end surface of the insulating base body.

[0011] The collimator of the present invention is as follows: a mounting hole is processed on the right end surface of the collimator body, an external thread matching the internal thread of the right end of the clamp pot is processed on the left end, the upper part of the mounting hole is a rectangular through hole, and the lower part is a regular triangle through hole, an oxygen-free copper pressure block is installed on the upper part of the mounting hole, and a capillary is installed on the lower part, and a threaded hole is processed on the outer circumference of the collimator body corresponding to the rectangular part of the mounting hole, and a hexagonal flat head set screw is installed in the threaded hole.

[0012] The heating sleeve of the present invention has the following characteristics: the heating sleeve body is a hollow tubular structure, and a plurality of heating wire threading holes are axially processed on the tube wall.

[0013] The heat insulation cover of the present invention comprises a stainless steel outer cover sleeved on a ceramic inner cover, the left end of the stainless steel outer cover is connected to a connecting cover, and an atomic injection hole is processed on the right end; the left end of the connecting cover is processed with an internal thread matching the external thread on the outer circumference of the insulation base, and a vent hole is processed on the outer circumference of the connecting cover.

[0014] The universal bolt of the invention is provided with a heat-insulating bushing, and the stud between the clamp pot body and the heat-insulating middle plate is provided with a heat-insulating bushing.

[0015] The heat-insulating bushing of the present invention is a step-type hollow cylindrical structure with a right end diameter smaller than a left end diameter.

[0016] The support frame of the present invention is circumferentially processed with heat conduction and heat insulation holes, and the internal thread of the free end of the support frame is radially processed with bolt locking holes.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. Change the high-power armored electric heating tube to a bare heating wire with better performance under vacuum, and reduce the energy consumption from more than 300W to less than 3W.

[0019] 2. The ceramic heating sleeve can be processed so that the bare wire is evenly distributed around the clamp pot. The existing armored manual winding heating wire is not only uneven but also cannot make the collimator better heated, increasing the risk of capillary blockage. The heating unit is arranged as a whole in the vacuum chamber by processing the support column with reduced thermal conductivity. The overall integration into the flange electrode first reduces the volume, then increases the thermal insulation performance, and finally improves the overall mechanical properties due to the reduction in volume and mass.

[0020] 3. A machinable ceramic inner cover is added to the heat insulation cover and the outer surface roughness of the cover is improved to further reduce the conduction efficiency of heat radiation and improve the overall thermal insulation performance of the furnace.

[0021] 4. Double-sided insulation grooves are set on the insulation middle plate and the insulation base, insulation bushings are set on the universal bolts connecting the insulation middle plate and the insulation base, studs are evenly arranged on the clamp pot and insulation bushings are set on the studs, and heat conduction insulation holes are set on the support columns to reduce the efficiency of heat conduction and improve the overall insulation performance of the furnace. The temperature of the insulation cover connected to the insulation base and the flange reaches the normal temperature accepted by the human body, which is safer than the insulation form wrapped in asbestos and tin foil.

[0022] The device has low energy consumption, sufficient heating, good heat preservation ability, small size, outstanding mechanical properties, safety, and simple disassembly and replacement. It can be widely applied to the field of quantum bid evaluation technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0024] Figure 2 yes Figure 1 Explosion diagram.

[0025] Figure 3 yes Figure 1 Schematic diagram of the connection between the vacuum electrode 1, flange 2 and heating device 3.

[0026] Figure 4 yes Figure 3 Explosion diagram.

[0027] Figure 5 yes Figure 4 Schematic diagram of the connection between the middle flange 2 and the vacuum electrode 1.

[0028] Figure 6 yes Figure 4 Schematic diagram of the structure of the medium tongs pot 3-5.

[0029] Figure 7 yes Figure 6 sectional view of .

[0030] Figure 8 yes Figure 4Schematic diagram of the structure of the middle insulation middle plate 3-9.

[0031] Fig. 9 yes Figure 4 Schematic diagram of the structure of the middle insulation base 3-11.

[0032] Fig.10 yes Figure 4 Schematic diagram of the structure of the middle collimator 3-2.

[0033] Fig.11 yes Figure 4 Schematic diagram of the structure of the middle heating jacket 3-3.

[0034] Fig.12 yes Figure 4 Schematic diagram of the structure of the middle heat insulation cover 3-1.

[0035] Fig.13 yes Figure 4 Schematic diagram of the structure of the middle insulation bushing 3-7.

[0036] In the figure: 1. vacuum chamber; 2. flange; 3. heating unit; 4. ion pump; 5. vacuum chamber; 6. angle valve; 7. collimation chamber; 2-1. support frame; 2-2. flange body; 3-1. heat insulation cover; 3-2. collimator; 3-3. heating sleeve; 3-4. heating wire; 3-5. clamp pot; 3-6. thermocouple; 3-7. insulation bushing; 3-8. universal bolt; 3-9. insulation middle plate; 3-10. self-locking nut; 3-11. insulation base; 3-1-1. connection cover; 3-1-2. ceramic inner cover; 3-1-3. stainless steel outer cover; 3-2-1. collimator body; 3-2-2. oxygen-free copper block; 3-2-3. capillary; 3 -2-4, hexagon socket flat head set screw; 3-3-1, heating sleeve body; 3-5-1, tongs pot body; 3-5-2, stud; 3-9-1, insulation middle plate body; 3-11-1, insulation base body; a, heat conduction insulation groove; b, electrode through hole; c, heat conduction insulation hole; d, bolt locking hole; e, thermocouple mounting hole; f, middle plate thermocouple wire hole; g, middle plate heating wire wire hole; h, stud hole; i, bolt hole; j, middle plate insulation groove; k, base insulation groove; m, base heating wire wire hole; n, base thermocouple wire hole; o, mounting hole; p, threaded hole; q, heating wire threading hole; x, vent hole; y, atomic injection hole. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, but the present invention is not limited to these embodiments.

[0038] Example 1

[0039] exist Figure 1 , 2, 3, and 5, the space strontium optical clock vacuum built-in high-temperature evaporation source device of the present invention, the vacuum electrode 1 is located at the right end of the flange 2 and is connected to the heating device 3 through the flange 2, the flange 2 is connected to the vacuum chamber 5 covered outside the heating device 3, the vacuum chamber 5 provides a vacuum environment for the device, the first outlet of the vacuum chamber 5 is connected to an ion pump 4 through a threaded fastener, the ion pump 4 is used to maintain an ultra-high vacuum, the second outlet of the vacuum chamber 5 is connected to a collimation chamber 7 through a threaded fastener, the orthogonal two-dimensional light beam injected from the outside shapes the atomic beam prepared by the heating unit 3 in the collimation chamber 7, the third outlet of the vacuum chamber 5 is fixedly connected to an angle valve 6 through a threaded fastener, the angle valve 6 is used to prepare a vacuum, when the ion pump After entering the maintenance stage, the angle valve will be closed. The flange 2 of this embodiment is composed of a support frame 2-1 and a flange body 2-2. Both ends of the flange body 2-2 are processed with heat conduction insulation grooves a. The heat conduction insulation grooves a form a cavity, which can better prevent heat transfer. At least two groups of support frames 2-1 are evenly distributed on the end surface of the heat conduction insulation groove a at the right end of the flange body 2-2. The right end of the support frame 2-1 is processed with an internal thread. The center position of the flange body 2-2 is processed with an electrode through hole b, and the vacuum electrode 1 passes through the flange 2 through the electrode through hole b; further, the support frame 2-1 is circumferentially processed with heat conduction insulation holes c, and the heat conduction insulation holes c reduce the heat transfer from the heating unit to the electrode flange. The free end of the support frame 2-1 is radially processed with a bolt locking hole d at the internal thread.

[0040] exist Figure 4 , 8, 9, 13, the heating device 3 is composed of a heat insulation cover 3-1, a collimator 3-2, a heating sleeve 3-3, a heating wire 3-4, a clamp pot 3-5, a thermocouple 3-6, a heat insulation bushing 3-7, a universal bolt 3-8, a heat insulation middle plate 3-9, a self-locking nut 3-10, and a heat insulation base 3-11. The heat insulation middle plate 3-9 of this embodiment is composed of a heat insulation middle plate body 3-9-1, and both ends of the heat insulation middle plate body 3-9-1 are processed with insulation The heat insulating middle plate body 3-9-1 has a concentric middle plate insulation groove j, which forms a cavity to better prevent heat transfer. A middle plate thermocouple wire hole f is processed at the center of the heat insulating middle plate body 3-9-1, and three stud holes h are evenly distributed on the end face of the middle plate insulation groove j. Three middle plate universal bolt holes i are processed on the end face of the heat insulating middle plate body 3-9-1, and a middle plate heating wire wire hole g is processed on the end face of the heat insulating middle plate body 3-9-1. The insulating base 3-11 is composed of an insulating base body 3-11-1. The insulating base body 3-11-1 is a stepped circular plate with different diameters at the left and right ends. An external thread is processed on the outer circumference of the right end circular plate. Both ends of the insulating base body 3-11-1 are processed with a base insulating groove k concentric with the insulating base body 3-11-1. The base insulating groove k forms a cavity, which can better prevent heat transfer. The center position of the insulating base body 3-11-1 is processed with a base thermocouple through-hole n. The outer end surface of the insulating base body 3-11-1 is evenly processed with 3 base universal bolt through-holes l. The insulating base A base heating wire through hole m is processed on the end face of the seat body 3-11-1, and the base heating wire through hole m is compatible with the middle plate heating wire through hole g, the base universal bolt through hole l is compatible with the middle plate universal bolt hole i, and the universal bolt 3-8 passes through the base universal bolt through hole l and the middle plate universal bolt hole i to connect the insulating middle plate 3-9 and the insulating base 3-11. Furthermore, in order to prevent heat conduction, an insulating bushing 3-7 is installed on the universal bolt 3-8. The insulating bushing 3-7 is a stepped hollow cylindrical structure with a diameter at the right end smaller than that at the left end. The insulating bushing 3-7 is made of machinable ceramic. In this embodiment, an insulating bushing 3-7 is installed at both ends of the insulating middle plate 3-9 and the insulating base 3-11 on the universal bolt 3-8. The left end of the universal bolt 3-8 is threadedly connected to the right end of the support frame 2-1. A hexagonal locking screw is arranged in the bolt locking hole d to horizontally clamp the universal bolt 3-8 to prevent it from falling off. The insulating middle plate 3-9 is connected to the left end of the clamp pot 3-5, and the clamp pot 3-5 is filled with strontium atoms or other alkaline earth metals.

[0041] exist Figure 6 , 7In the figure, the clamp pot 3-5 is composed of a clamp pot body 3-5-1 and a stud 3-5-2. The clamp pot body 3-5-1 is a hollow cylindrical structure with an open right end and an internal thread, and a closed left end. A thermocouple mounting hole e is processed at the center of the left end of the clamp pot body 3-5-1. The thermocouple 3-6 is installed in the thermocouple mounting hole e. The thermocouple 3-6 is electrically connected to the vacuum electrode 1 through wires passing through the middle plate thermocouple wire hole f and the base thermocouple wire hole n. Three studs 3-5-2 are evenly welded on the left end surface of the clamp pot body 3-5-1. The free end of the stud 3-5-2 passes through the stud hole h and is fixed by a self-locking nut 3-10. An insulating bushing 3-7 is installed on the stud 3-5-2 between the clamp pot body 3-5-1 and the insulating middle plate 3-9. The right end of the clamp pot 3-5 is connected to the collimator 3-2.

[0042] exist Fig.10 In the figure, the collimator 3-2 is composed of a collimator body 3-2-1, an oxygen-free copper pressure block 3-2-2, a capillary 3-2-3, and a hexagon socket flat head set screw 3-2-4. The right end face of the collimator body 3-2-1 is processed with a mounting hole o, and the left end is processed with an external thread matching the internal thread of the right end of the clamp pot 3-5-1. The upper part of the mounting hole o is a rectangular through hole, and the lower part is a regular triangle through hole. The upper part of the mounting hole o is installed with an oxygen-free copper pressure block 3-2-2, and the lower part is installed with a capillary 3-2-3. A threaded hole p is processed on the outer circumference of the collimator body 3-2-1 corresponding to the rectangular part of the mounting hole o. A hexagon socket flat head set screw 3-2-4 is installed in the threaded hole p. The hexagon socket flat head set screw 3-2-4 presses the capillary 3-2-3 through the oxygen-free copper pressure block 3-2-2. The outer sleeve of the clamp pot 3-5 is provided with a heating sleeve 3-3.

[0043] exist Fig.11 In the figure, the heating sleeve 3-3 is composed of a heating sleeve body 3-3-1, and the heating sleeve body 3-3-1 is a hollow tubular structure. Because the heating wire 3-6 is a bare wire, the heating sleeve body 3-3-1 is made of ceramic, and a plurality of heating wire threading holes q are axially processed on the tube wall. The head end of the heating wire 3-4 enters from the first heating wire threading hole q, bypasses all the heating wire threading holes q, and comes out from the last heating wire threading hole q. The head end and the tail end of the heating wire 3-4 are electrically connected to the vacuum electrode 1 through wires passing through the middle plate heating wire threading hole g and the base heating wire threading hole m, respectively. The outer sleeve of the heating sleeve 3-3 is provided with a heat insulating cover 3-1.

[0044] exist Fig.12In the figure, the heat insulation cover 3-1 is composed of a connecting cover 3-1-1, a ceramic inner cover 3-1-2, and a stainless steel outer cover 3-1-3. The stainless steel outer cover 3-1-3 is sleeved on the ceramic inner cover 3-1-2. The left end of the stainless steel outer cover 3-1-3 is welded and fixed to the connecting cover 3-1-1, and the right end is processed with an atomic injection hole y. The left end of the connecting cover 3-1-1 is processed with an internal thread matching the external thread on the outer circumference of the insulation base 3-11. The left end of the heat insulation cover 3-1 is threadedly connected to the right end of the insulation base plate 3-11, and a vent hole x is processed on the outer circumference of the connecting cover 3-1-1 to accelerate the speed at which the gas released by the internal and external components of the heat insulation cover 3-1 is adsorbed by the ion pump.

[0045] Example 2

[0046] In this embodiment, four stud holes h are evenly distributed on the end face of the middle plate insulation groove j in the above-mentioned embodiment 1, four middle plate universal bolt holes i are processed on the end face of the insulation middle plate body 3-9-1, four base universal bolt holes l are evenly distributed on the outer end face of the insulation base body 3-11-1, and four studs 3-5-2 are evenly welded on the left end face of the clamp pot body 3-5-1. The remaining components and the connection relationship of the components are exactly the same as those in embodiment 1.

[0047] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "left end", "right end", "interior", "head end", "end", "bottom" and the like is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "setting", "installation" and the like should be understood in a broad sense, for example, it can be a fixed connection, an integral connection, or a detachable connection; it can also be the internal connection of two elements; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The above detailed description is only a specific description of the feasible implementation mode of the present invention, and they are not used to limit the scope of protection of the present invention. All equivalent implementation modes, changes and modifications that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A space strontium optical clock vacuum built-in high-temperature evaporation source device, characterized in that: The vacuum electrode (1) is electrically connected to the heating device (3) via a flange (2); a vacuum chamber (5) is provided outside the heating device (3); the vacuum chamber (5) is connected to the ion pump (4), the collimating chamber (7), and the angle valve (6); The flange (2) comprises: heat conduction insulation grooves (a) are processed at both ends of the flange body (2-2); at least two groups of support frames (2-1) are evenly arranged on the end surface of the heat conduction insulation groove (a) at the right end of the flange body (2-2); the right end of the support frame (2-1) is processed with an internal thread; an electrode through hole (b) is processed at the center position of the flange body (2-2); and the vacuum electrode (1) passes through the flange (2) through the electrode through hole (b); The heating device (3) comprises: a heat-insulating base (3-11) and a heat-insulating middle plate (3-9) connected by a universal bolt (3-8); the left end of the universal bolt (3-8) is threadedly connected to the right end of the support frame (2-1); the left end of the clamp pot (3-5) is connected to the heat-insulating middle plate (3-9); a thermocouple (3-6) is arranged between the clamp pot (3-5) and the heat-insulating middle plate (3-9); the thermocouple (3-6) is electrically connected to the vacuum electrode (1); the right end of the clamp pot (3-5) is connected to the collimator (3-2); a heating sleeve (3-3) is arranged on the outside of the clamp pot (3-5); a heating wire (3-4) is arranged on the heating sleeve (3-3); the heating wire (3-4) is electrically connected to the vacuum electrode (1); a heat-insulating cover (3-1) is arranged on the outside of the heating sleeve (3-3); the left end of the heat-insulating cover (3-1) is connected to the right end of the heat-insulating base (3-11); The support frame (2-1) is circumferentially processed with a heat conduction insulation hole (c), and the free end of the support frame (2-1) is radially processed with a bolt locking hole (d) at the internal thread. The clamp pot (3-5) is as follows: the clamp pot body (3-5-1) is a hollow cylindrical structure with an open right end and an internal thread, and a closed left end; a thermocouple mounting hole (e) is processed at the center of the left end of the clamp pot body (3-5-1); and at least two studs (3-5-2) are evenly distributed on the left end surface of the clamp pot body (3-5-1).

2. The space strontium optical clock vacuum built-in high temperature evaporation source device according to claim 1, characterized in that The thermal insulation middle plate (3-9) is as follows: both left and right ends of the thermal insulation middle plate body (3-9-1) are processed with a middle plate insulation groove (j) concentric with the thermal insulation middle plate body (3-9-1); the center position of the thermal insulation middle plate body (3-9-1) is processed with a middle plate thermocouple wire hole (f); at least two stud holes (h) are evenly distributed on the end surface of the middle plate insulation groove (j); the free end of the stud (3-5-2) passes through the stud hole (h) and is fixed by a self-locking nut (3-10); at least two middle plate universal bolt holes (i) are processed on the end surface of the thermal insulation middle plate body (3-9-1); and the end surface of the thermal insulation middle plate body (3-9-1) is processed with a middle plate heating wire wire hole (g).

3. The space strontium optical clock vacuum built-in high temperature evaporation source device according to claim 2, characterized in that The insulating base (3-11) is as follows: the insulating base body (3-11-1) is a stepped circular plate with different diameters at the left and right ends, an external thread is processed on the outer circumference of the right end circular plate, both ends of the insulating base body (3-11-1) are processed with base insulating grooves (k) concentric with the insulating base body (3-11-1), the center position of the insulating base body (3-11-1) is processed with a base thermocouple through hole (n), the outer end surface of the insulating base body (3-11-1) is evenly processed with at least 2 base universal bolt through holes (l), and the end surface of the insulating base body (3-11-1) is processed with a base heating wire through hole (m).

4. The space strontium optical clock vacuum built-in high temperature evaporation source device according to claim 1, characterized in that The collimator (3-2) comprises: a mounting hole (o) is processed on the right end face of the collimator body (3-2-1), an external thread matching the internal thread of the right end of the clamp pot body (3-5-1) is processed on the left end, the mounting hole (o) is a rectangular through hole at the top and a regular triangle through hole at the bottom, an oxygen-free copper pressure block (3-2-2) is installed at the top of the mounting hole (o), and a capillary (3-2-3) is installed at the bottom, a threaded hole (p) is processed on the outer circumference of the collimator body (3-2-1) corresponding to the rectangular part of the mounting hole (o), and a hexagonal flat head set screw (3-2-4) is installed in the threaded hole (p).

5. The space strontium optical clock vacuum built-in high temperature evaporation source device according to claim 1, characterized in that The heating sleeve (3-3) is as follows: the heating sleeve body (3-3-1) is a hollow tubular structure, and a plurality of heating wire threading holes (q) are axially processed on the tube wall.

6. The space strontium optical clock vacuum built-in high temperature evaporation source device according to claim 3, characterized in that The heat insulation cover (3-1) comprises: a stainless steel outer cover (3-1-3) sleeved on a ceramic inner cover (3-1-2); the left end of the stainless steel outer cover (3-1-3) is connected to a connecting cover (3-1-1); an atomic injection hole (y) is processed on the right end; an internal thread matching the external thread on the outer circumference of the heat insulation base (3-11) is processed on the left end of the connecting cover (3-1-1); and a vent hole (x) is processed on the outer circumference of the connecting cover (3-1-1).

7. The space strontium optical clock vacuum built-in high temperature evaporation source device according to claim 2, characterized in that: The universal bolt (3-8) is provided with a heat insulating bushing (3-7), and the stud (3-5-2) between the clamp pot body (3-5-1) and the heat insulating middle plate (3-9) is provided with a heat insulating bushing (3-7).

8. The space strontium optical clock vacuum built-in high temperature evaporation source device according to claim 7, characterized in that: The thermal insulation bushing (3-7) is a stepped hollow cylindrical structure with a right end diameter smaller than a left end diameter.

Images