CN115728808A - High-purity germanium detector - Google Patents
High-purity germanium detector Download PDFInfo
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- CN115728808A CN115728808A CN202211441011.4A CN202211441011A CN115728808A CN 115728808 A CN115728808 A CN 115728808A CN 202211441011 A CN202211441011 A CN 202211441011A CN 115728808 A CN115728808 A CN 115728808A
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Abstract
The embodiment of the application provides a high-purity germanium detector, and the high-purity germanium detector comprises a shell, a detector body and a cold finger assembly. The shell is provided with an accommodating space, the detector body is arranged in the accommodating space, the cold finger assembly is flexibly connected with the detector body, and the cold finger assembly is used for refrigerating the detector body. The high-purity germanium detector provided by the embodiment of the application can reduce the vibration of the cold finger assembly to be transmitted to the detector body through the flexible connection of the cold finger assembly and the detector body, and reduces the influence of external factors on the signal output stability of the detector body to a certain extent.
Description
Technical Field
The application relates to the technical field of detection, in particular to a high-purity germanium detector.
Background
High purity germanium detectors generally need to have good temperature conductivity because they need to operate in a cryogenic environment of liquid nitrogen (about 77K) for proper operation. Under the general condition, through setting up the better cold finger of temperature conduction characteristic, the effect that plays the cold source in inserting the liquid nitrogen bucket of the one end of cold finger, the other end and the detector body coupling of cold finger play cryogenic effect to high-purity germanium crystal.
In the related technology, some unavoidable external factors such as liquid nitrogen bubble vibration may cause the high-purity germanium detector to generate micro trembling, so that the stability of an output signal of the high-purity germanium detector can be reduced, and further the energy resolution ratio is poor.
Disclosure of Invention
In view of the above, it is desirable to provide a high purity germanium detector that can improve the stability of the output signal of the high purity germanium detector.
To achieve the above object, an embodiment of the present application provides a high purity germanium detector, including:
a housing having an accommodating space;
the detector body is arranged in the accommodating space;
the cold finger assembly is flexibly connected with the detector body and used for refrigerating the detector body.
In some embodiments, the cold finger assembly includes a cold finger and a flexible connector connected to the cold finger, and the cold finger and the detector body can exchange heat through the flexible connector.
In some embodiments, the cold finger comprises a cold finger body and a cold finger shell wrapped outside the cold finger body, and the cold finger body is connected with the flexible connecting piece.
In some embodiments, the cold finger body is a copper rod.
In some embodiments, the cold finger housing is stainless steel.
In some embodiments, a vacuum cavity is formed between the cold finger body and the cold finger housing.
In some embodiments, the flexible connector comprises a plurality of wires.
In some embodiments, the probe body comprises:
the detector shell is provided with an installation space, the detector shell is arranged in the accommodating space, and the side wall of the detector shell and the side wall of the accommodating space are arranged at intervals and are fixedly connected;
a high purity germanium crystal disposed in the installation space.
In some embodiments, the shell is formed with a first fastening hole and at least one hollowed-out groove penetrating through the side wall of the shell, the hollowed-out groove comprises two sub-grooves extending along the axial direction, one ends of the two sub-grooves are communicated, and the other ends of the two sub-grooves are arranged at intervals; the first fastening hole is located between the two subslots and is close to one end where the two subslots are communicated, and the detector shell is provided with a second fastening hole corresponding to the first fastening hole.
In some embodiments, the plurality of the hollow-out grooves and the plurality of the first fastening holes are arranged in the same direction, and the directions of the sub-groove communication ends of adjacent hollow-out grooves are opposite.
In some embodiments, the probe body comprises an electrode rod, the probe housing comprises a top cover and a housing body with the mounting space, the top cover covers the top end of the mounting space, and the electrode rod extends into the high-purity germanium crystal so that the high-purity germanium crystal is abutted against the top cover.
In some embodiments, the top cover includes an incident area having a thickness of less than 1mm.
In some embodiments, the probe body includes a circuit board, the probe housing includes a partition board dividing the installation space into a first sub-space and a second sub-space, the high purity germanium crystal is disposed in the first sub-space, the circuit board is disposed in the second sub-space, and one end of the electrode rod, which is far away from the high purity germanium crystal, abuts against the partition board and extends into the second sub-space to be in communication connection with the circuit board.
In some embodiments, the detector housing includes a bottom cover covering the bottom end of the installation space, and the bottom cover is connected to the flexible connecting member.
The high-purity germanium detector provided by the embodiment of the application comprises a shell, a detector body and a cold finger assembly. The shell is provided with an accommodating space, the detector body is arranged in the accommodating space, the cold finger assembly is flexibly connected with the detector body, and the cold finger assembly is used for refrigerating the detector body. That is to say, through indicating subassembly and detector body flexonics with cold, can reduce the vibrations transmission of cold finger subassembly to the detector body, reduced external factor to a certain extent to the influence of detector body signal output stability.
Drawings
FIG. 1 is a schematic diagram of a high purity germanium detector in accordance with an embodiment of the present application;
FIG. 2 is a schematic view of another view of the high purity germanium detector of FIG. 1;
fig. 3 isbase:Sub>A sectional view taken alongbase:Sub>A-base:Sub>A in fig. 1.
Description of the reference numerals
1. A housing; 1a, an accommodating space; 1b, hollowing out a groove; 1c, a first fastening hole; 1d, subslot; 2. a probe body; 21. a detector housing; 21a, an installation space; 21b, a first subspace; 21c, a second subspace; 211. a housing body; 212. a top cover; 212a, an incident area; 213. a partition plate; 214. a bottom cover; 22. high purity germanium crystals; 23. an electrode rod; 3. a cold finger assembly; 31. cold fingers; 32. a flexible connector.
Detailed Description
It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.
The directional terms used in the description of the present application are intended only to facilitate the description of the application and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered limiting of the application.
In the embodiments of the present application, the "up", "down", "top", "bottom" orientation or positional relationship is based on the orientation or positional relationship shown in fig. 3, and the "axial" direction is based on the top-bottom direction shown in fig. 3, it being understood that these orientation terms are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application. The present application will now be described in further detail with reference to the accompanying drawings and specific examples. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1 to 3, an embodiment of the present application provides a high purity germanium detector, which includes a housing 1, a detector body 2, and a cold finger assembly 3. Casing 1 has accommodation space 1a, and detector body 2 sets up in accommodation space 1a, and cold finger subassembly 3 and detector body 2 flexonics indicate that subassembly 3 is used for the detector body 2 refrigeration.
It should be noted that, the specific manner of the cold finger assembly 3 for refrigerating the detector body 2 is not limited herein, and for example, in an embodiment, one end of the cold finger assembly 3 is flexibly connected to the detector body 2, and the other end of the cold finger assembly extends into liquid nitrogen to function as a cold source. In other embodiments, the cold finger assembly 3 utilizes electric refrigeration and a refrigeration system of the electric refrigeration to get rid of the dependence of the high-purity germanium detector on liquid nitrogen.
It can be understood that, referring to fig. 3, the housing 1 defines an accommodating space 1a, the probe body 2 is disposed in the accommodating space 1a, and the housing 1 serves to protect the probe body 2.
It should be noted that, the flexible connection of the cold finger assembly 3 and the detector body 2 means that the vibration of the cold finger assembly 3 can be reduced from being transmitted to the detector body 2 by flexibly connecting the cold finger assembly 3 and the detector body 2.
The flexible connection is a rigid connection, and the rigid connection refers to a connection between two connecting pieces, when one connecting piece generates displacement or stress, the other connecting piece does not generate displacement or relative deformation relative to the first connecting piece. That is, the two connecting members are connected as a single body. A flexible connection is a connection that allows displacement or deformation of two connecting elements connected to each other without limiting the deformation in one direction, i.e. allowing deformation, or it is desirable that it be able to deform. By taking the high-purity germanium detector of the embodiment of the application as an example for illustration, through with cold finger subassembly 3 and detector body 2 flexonics, take place the micro tremble and produce the micro displacement when cold finger subassembly 3, can reduce the vibrations transmission of cold finger subassembly 3 to detector body 2 to a certain extent.
In the related art, a high purity germanium detector is required to normally operate in a low temperature environment of liquid nitrogen (about 77K), so that the high purity germanium detector is generally required to have a good temperature conductivity. Under the general condition, through setting up the better cold finger of temperature conduction characteristic, the effect of cold source is played in inserting the liquid nitrogen bucket to the one end of cold finger, connect through rigid connection's mode between the other end of cold finger and the high-purity germanium crystal, be used for playing cryogenic effect to the high-purity germanium crystal, for example through metal block or metal bar direct and detector body coupling, and among the high-purity germanium spectrometer refrigerating system, the liquid nitrogen bubble vibrates, high-purity germanium detector and lead wire can produce the tremble noise, and the high-purity germanium detector that other inevitable external factors caused is little trembled, can reduce the stability of high-purity germanium detector output signal, and then lead to the energy resolution ratio variation.
The high-purity germanium detector provided by the embodiment of the application comprises a shell 1, a detector body 2 and a cold finger assembly 3. Casing 1 has accommodation space 1a, and detector body 2 sets up in accommodation space 1a, and cold finger subassembly 3 and detector body 2 flexonics indicate that subassembly 3 is used for the detector body 2 refrigeration. That is to say, through indicating subassembly 3 and detector body 2 flexonics with cold, can reduce the vibrations transmission of cold finger subassembly 3 to detector body 2, reduced external factors to a certain extent to the influence of detector body 2 signal output stability.
It should be noted that, a specific manner of flexibly connecting the cold finger assembly 3 and the probe body 2 is not limited herein, and for example, in an embodiment, referring to fig. 3, the cold finger assembly 3 includes a cold finger 31 and a flexible connecting member 32 connected to the cold finger 31, and the cold finger 31 and the probe body 2 can exchange heat through the flexible connecting member 32. That is to say, the cold finger assembly 3 is provided with the cold finger 31 and the flexible connecting member 32, so that the cold finger 31 is connected with the detector body 2 through the flexible connecting member 32, and the flexible connection between the cold finger 31 and the detector body 2 is further realized. When the cold finger 31 generates a small vibration and generates a small displacement, the flexible connecting member 32 can reduce or eliminate the vibration transmitted to the detector body 2.
The specific structure of the flexible connecting element 32 is not limited herein, and the flexible connecting element 32 includes a plurality of wires, such as a wire cluster composed of a plurality of thin and soft wires. Of course, the flexible connecting element 32 may be other flexible structures with heat conducting properties.
In a specific embodiment, flexible connectors 32 include many copper wires, for example the copper wire cluster that comprises many thin and soft copper wires, and the heat conductivity of copper is better, can play better refrigeration effect to detector body 2.
It should be noted that the manner of connecting the copper cluster and the probe body 2 is not limited herein, and in an exemplary embodiment, the copper cluster and the probe body 2 are connected in a fastening manner. In other embodiments, the copper wire cluster can also be welded to the probe body 2.
It can be understood that the detector body 2 is connected with the cold finger 31 in a flexible structure chain manner, namely, the high-purity germanium crystal 22 and the cold finger 31 are conducted with cold through a copper wire flexible structure chain (flexible connection).
In one embodiment, the cold finger 31 includes a cold finger body (not shown) and a cold finger housing (not shown) wrapped around the cold finger body, and the cold finger body is connected to the flexible connecting member 32. That is, the cold finger body is protected by wrapping the cold finger shell on the outer side of the cold finger body. When the cold finger 31 is put into liquid nitrogen, the cold quantity of the liquid nitrogen is transmitted to the cold finger body through the cold finger shell and then transmitted to the detector body 2 through the flexible connecting piece 32, so that the purpose of refrigerating the detector body 2 is achieved.
It should be noted that the cold finger body is generally made of a material with better thermal conductivity, which is beneficial to realize refrigeration of the detector body 2.
In order to improve the life of cold finger 31 and to the refrigeration effect to detector body 2, cold finger shell generally adopts the better material that just has certain intensity of heat conductivity, is favorable to realizing the refrigeration to detector body 2, and can play the guard action to cold finger body, exemplarily, in an embodiment, cold finger shell is the stainless steel. On one hand, the stainless steel has better heat-conducting property and higher strength. On the other hand, the density of stainless steel is lower than that of copper, so that the weight of the high-purity germanium detector can be reduced to a certain extent, and the convenience of the high-purity germanium detector in use can be improved.
In order to further improve the refrigeration efficiency of the cold finger 31, in an embodiment, a vacuum cavity is formed between the cold finger body and the cold finger housing, so that the refrigeration efficiency of the cold finger 31 can be improved. For example, the cold finger body is composed of a copper bar, the cold finger shell is made of stainless steel, namely the outer layer of the copper bar is wrapped by the stainless steel, and the space between the copper bar and the stainless steel is vacuumized, so that the refrigeration efficiency is improved.
It should be noted that, the specific manner of connecting the cold finger body to the flexible connecting element 32 is not limited herein, and for example, in one embodiment, the cold finger body is connected to the flexible connecting element 32 in a fastening manner. In other embodiments, the cold finger body and the flexible connector 32 may be connected by welding.
In one embodiment, referring to fig. 1 to 3, the probe body 2 includes a probe housing 21 and a high purity germanium crystal 22, the probe housing 21 is disposed in the accommodating space 1a, and a sidewall of the probe housing 21 and a sidewall of the accommodating space 1a are spaced apart and fastened. That is to say, by setting the detector housing 21 in the accommodation space 1a, it is favorable to protecting the detector body 2, and the detection effect can be improved to some extent. In addition, the outer side wall of the detector casing 21 is spaced from the side wall of the accommodating space 1a and is tightly connected to form a suspension structure, so that the vibration of the casing 1 can be further reduced from being transmitted to the detector body 2, that is, the influence of external factors on the detector body 2 can be reduced.
The side wall of the detector shell 21 is tightly connected with the side wall of the accommodating space 1a, that is, the side wall of the detector shell 21 is tightly connected with the side wall of the shell 1, and the connecting structure is simple and convenient to assemble and disassemble.
In an embodiment, referring to fig. 1 to 3, the housing 1 is formed with a first fastening hole 1c and at least one hollow groove 1b penetrating through a side wall of the housing 1, the hollow groove 1b includes two sub-grooves 1d extending along an axial direction, one ends of the two sub-grooves 1d are communicated, and the other ends are arranged at intervals to form a U-shaped hollow groove 1b; the first fastening hole 1c is located between the two sub-slots 1d and is disposed near one end where the two sub-slots 1d communicate. Through set up fretwork groove 1b at 1 lateral wall of casing, on the one hand, can alleviate the weight of high-purity germanium detector, be favorable to improving the convenience that high-purity germanium detector used. On the other hand, by arranging the first fastening hole 1c between the two sub-slots 1d and near the end where the two sub-slots 1d communicate, the detector shell 21 is provided with a second fastening hole corresponding to the first fastening hole 1c, that is, a fastening member can be inserted into the corresponding first fastening hole 1c and the second fastening hole, so as to realize the fastening connection between the detector shell 21 and the casing 1. And first fastening hole 1c is located between two subslots 1d, and is close to the one end setting that two subslots 1d communicate, that is to say, fretwork groove 1b encloses at casing 1 and establishes and form similar cantilever structure, and first fastening hole 1c sets up at the free end of cantilever, namely at the free end fastening connection of cantilever, and fretwork groove 1b encloses at casing 1 and establishes and form similar cantilever structure and can improve the cushioning effect of junction, can reduce external vibrations to a certain extent and transmit to detector body 2.
In an embodiment, referring to fig. 1 and fig. 2, the plurality of hollow-out grooves 1b and the plurality of first fastening holes 1c are provided, and the directions of the communication ends of the sub-grooves 1d of the adjacent hollow-out grooves 1b are opposite. That is, when two sub-grooves 1d of a certain hollow groove 1b are located at one end of the top of the shell 1 and communicated with each other, two sub-grooves 1d of the hollow groove 1b adjacent to the hollow groove 1b are located at one end of the bottom of the shell 1 and communicated with each other, so that the first fastening holes 1c can be alternately arranged along the axial direction of the shell 1, and on one hand, the stability of the connection structure of the shell 1 and the detector shell 21 can be improved, and on the other hand, the damping effect of the high-purity germanium detector can be improved to a certain extent.
In one embodiment, referring to fig. 3, the probe body 2 includes an electrode rod 23, the probe housing 21 includes a top cover 212 and a housing body 211 having a mounting space 21a, the top cover 212 covers the top end of the mounting space 21a, and the electrode rod 23 extends into the high purity germanium crystal 22, so that the high purity germanium crystal 22 is abutted against the top cover 212. That is, by providing the probe housing 21 to include the top cover 212 and the housing body 211 having the mounting space 21a, the top cover 212 is provided to cover the top end of the mounting space 21a, that is, the top cover 212 is provided to cover the top end of the housing body 211 for sealing the mounting space 21a to protect the high purity germanium crystal 22 located in the mounting space 21a. In addition, the detector body 2 is provided with the electrode rod 23, and the electrode rod 23 extends into the high-purity germanium crystal 22, so that the high-purity germanium crystal 22 is abutted against the top cover 212, namely, the high-purity germanium crystal 22 can be pressed and fixed by the top cover 212 above the shell body 211 and the electrode rod 23 inside the installation space 21a. That is, the top cover 212 and the electrode rod 23 clamp the high-purity germanium crystal 22 therebetween, and the electrode rod 23 mainly plays a role of supporting the high-purity germanium crystal 22 and simultaneously extracts a detector signal.
It should be noted that the position of the electrode rod 23 extending into the high-purity germanium crystal 22 is not limited herein, and for example, in an embodiment, the electrode rod 23 extends into the center of the high-purity germanium crystal 22, so as to improve the stability of the connection structure between the electrode rod 23 and the high-purity germanium crystal 22.
It should be noted that the material of the electrode rod 23 is not limited herein, and for example, the electrode rod 23 is a copper rod, which has a certain strength for supporting the high-purity germanium crystal 22 and a good conductivity. Of course, the electric shock rod may be made of other metal materials having certain strength and conductive performance.
After the high purity germanium crystal 22 is placed, the top cover 212 is tightly coupled to the side wall of the housing body 211, i.e., screwed, to fix the top cover 212 to the housing body 211.
In one embodiment, referring to fig. 2 and 3, the top cover 212 includes an incident area 212a, and the thickness of the incident area 212a is less than 1mm. The incident region 212a may function as an entrance window, and may receive the detection object through the entrance window. Illustratively, the thickness of the incident area 212a is 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, or 1mm, and so forth. Thus, the thickness of the incident region 212a is moderate, so that the high-purity germanium detector can be ensured to have a good detection effect, the incident region 212a can be ensured to have certain strength to a certain extent, and the incident region is not easily damaged.
It should be noted that the top cover 212 may be reinforced at other portions except the incident region 212a to improve the overall strength of the top cover 212, for example, the top cover 212 may be structurally reinforced at the connection with the housing body 211.
The material of the top cover 212 is not limited herein, and for example, the material of the top cover 212 is beryllium, aluminum, or carbon fiber.
In an embodiment, referring to fig. 3, the probe body 2 includes a circuit board, the probe housing 21 includes a partition 213 dividing the installation space 21a into a first sub-space 21b and a second sub-space 21c, the high purity germanium crystal 22 is disposed in the first sub-space 21b, the circuit board is disposed in the second sub-space 21c, and one end of the electrode rod 23 away from the high purity germanium crystal 22 abuts against the partition 213 and extends into the second sub-space 21c to be in communication connection with the circuit board. That is, by providing the partition 213, on the one hand, for dividing the installation space 21a into the first subspace 21b and the second subspace 21c, which are isolated from each other, and on the other hand, for supporting the electrode rod 23.
In addition, the installation space 21a is divided into a first subspace 21b and a second subspace 21c which are mutually separated by the partition plate 213, the high-purity germanium crystal 22 is arranged in the first subspace 21b, and the circuit board is arranged in the second subspace 21c, so that the high-purity germanium crystal 22 can be separated from components such as the circuit board, the influence on the high-purity germanium crystal 22 is reduced, the stability of the output signal of the high-purity germanium detector can be prevented from being reduced to a certain extent, and the energy resolution ratio is prevented from being deteriorated. Meanwhile, one end of the electrode rod 23, which is far away from the high-purity germanium crystal 22, is abutted against the partition plate 213 and extends into the second subspace 21c, so that the electrode rod 23 is in communication connection with the circuit board.
Specifically, the partition 213 may be disposed in a direction substantially perpendicular to the axial direction of the case body 211, for example, a circumferential side wall of the partition 213 is connected to an inner side wall of the mounting space 21a, and the first subspace 21b and the second subspace 21c are distributed in the axial direction of the case body 211.
Illustratively, the partition 213 and the housing body 211 may be a unitary structure. The integrated partition plate 213 and the shell body 211 can reduce the number of parts, reduce the assembly time and improve the assembly efficiency.
Of course, the partition 213 and the housing body 211 may be a split structure.
It should be noted that the materials of the shell 1 and the shell body 211 are not limited herein, and in an exemplary embodiment, the materials of the shell 1 and the shell body 211 may be aluminum alloy.
In one embodiment, referring to fig. 3, the casing 21 includes a bottom cover 214 covering the bottom end of the installation space 21a, and the bottom cover 214 is connected to the flexible connecting member 32. That is, the bottom cover 214 and the top cover 212 are respectively disposed at the bottom and the top of the installation space 21a to jointly seal the installation space 21a.
The flexible connecting member 32 is connected to the probe body 2 by being connected to the bottom cover 214. Therefore, the cold finger 31 is connected with the detector body 2 through the flexible connecting piece 32, and the flexible connection between the cold finger 31 and the detector body 2 is realized. When the cold finger 31 generates a small vibration and generates a small displacement, the flexible connecting member 32 can reduce or eliminate the vibration transmitted to the detector body 2. Meanwhile, the cold energy of the cold source can be transmitted to the bottom cover 214 of the detector body 2 through the cold finger 31 and the flexible connecting member 32, and then transmitted to the shell body 211, and finally the high-purity germanium crystal 22 in the installation space 21a can be refrigerated.
In one embodiment, the bottom cover 214 of the detector housing 21 is connected to the cold finger 31 by means of a flexible chain of copper wires, which is a copper cluster consisting of a plurality of thin and soft copper wires. In addition, the copper has good thermal conductivity, so that the high-purity germanium crystal 22 can be well refrigerated. The cold finger body is also composed of a copper bar, the outer side of the cold finger body is wrapped by a cold finger shell made of stainless steel, and the copper bar and the stainless steel are vacuumized, so that the refrigeration efficiency is improved. In general, the end of the cold finger 31 far away from the high purity germanium crystal 22 is inserted into a liquid nitrogen barrel or is electrically refrigerated to play the role of a cold source.
The scheme adopts a suspended cylinder type high-purity germanium crystal 22 packaging structure and a flexible structure chain mode to be connected with the cold finger 31. The method is characterized in that: in the suspension type detector packaging structure, cold conduction is carried out between the high-purity germanium crystal 22 and the cold finger 31 through a copper wire flexible structure chain.
The high-purity germanium detector comprises a shell 1 and a detector shell 21, wherein the detector shell 21 is arranged in an accommodating space 1a of the shell 1, the side wall of the detector shell 21 and the side wall of the accommodating space 1a are arranged at intervals and are in fastening connection, namely the side wall of the detector shell 21 and the side wall of the shell 1 are in fastening connection through fastening holes in the side walls to form a suspension type structure.
It should be noted that a hollow-out region may be further disposed on the housing 1, and the hollow-out region is located below the bottom cover 214, for example, may be an "O" shaped hollow-out structure, so that the weight of the high-purity germanium detector may be further reduced, and the convenience of the high-purity germanium detector may be further improved.
Reference throughout this specification to "one embodiment," "some embodiments," "other embodiments," "further embodiments," or "exemplary" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the present application. In this application, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described herein may be combined by one skilled in the art without being mutually inconsistent.
The various embodiments/implementations provided herein may be combined with each other without contradiction.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (12)
1. A high purity germanium detector, comprising:
a housing having an accommodating space;
the detector body is arranged in the accommodating space;
the cold finger assembly is flexibly connected with the detector body and used for refrigerating the detector body.
2. The high purity germanium detector according to claim 1, wherein the cold finger assembly comprises a cold finger and a flexible connection to the cold finger, the cold finger and the detector body being capable of exchanging heat through the flexible connection.
3. The high purity germanium detector of claim 2 wherein said cold finger comprises a cold finger body and a cold finger housing surrounding said cold finger body, said cold finger body being connected to said flexible connection.
4. The high purity germanium detector according to claim 3 wherein said cold finger body is a copper rod; and/or the presence of a gas in the gas,
the cold finger shell is made of stainless steel; and/or the presence of a gas in the atmosphere,
a vacuum cavity is formed between the cold finger body and the cold finger shell.
5. The high purity germanium detector of claim 2 wherein said flexible connection comprises a plurality of wires.
6. The high purity germanium detector of claim 2, wherein said detector body comprises:
the detector shell is provided with an installation space, the detector shell is arranged in the accommodating space, and the side wall of the detector shell and the side wall of the accommodating space are arranged at intervals and are fixedly connected;
and the high-purity germanium crystal is arranged in the installation space.
7. The high purity germanium detector according to claim 6, wherein the housing is formed with a first fastening hole and at least one hollowed-out slot extending through a side wall of the housing, the hollowed-out slot comprising two axially extending sub-slots, one end of each of the two sub-slots being in communication with the other end of the two sub-slots being spaced apart; the first fastening hole is located between the two subslots and is close to one end where the two subslots are communicated, and the detector shell is provided with a second fastening hole corresponding to the first fastening hole.
8. The high purity germanium detector of claim 7, wherein a plurality of said hollowed-out grooves and said first fastening holes are provided, and the directions of said sub-groove communication ends of adjacent hollowed-out grooves are opposite.
9. The high purity germanium detector of claim 6 wherein said detector body comprises an electrode rod, said detector housing comprises a top cover and a housing body having said mounting space, said top cover covering the top end of said mounting space, said electrode rod extending into said high purity germanium crystal such that said high purity germanium crystal interferes with said top cover.
10. The high purity germanium detector according to claim 9 wherein the top cap comprises an incident area, the incident area having a thickness of less than 1mm.
11. The high purity germanium detector of claim 9 wherein said detector body includes a circuit board, said detector housing includes a partition dividing said mounting space into a first sub-space and a second sub-space, said high purity germanium crystal being disposed in said first sub-space, said circuit board being disposed in said second sub-space, an end of said electrode rod remote from said high purity germanium crystal abutting said partition and extending into said second sub-space in communicative connection with said circuit board.
12. The high purity germanium detector according to claim 9 wherein the detector housing includes a bottom cover covering the bottom end of the mounting space, the bottom cover being connected to the flexible connector.
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| CN202211441011.4A CN115728808A (en) | 2022-11-17 | 2022-11-17 | High-purity germanium detector |
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| CN202211441011.4A CN115728808A (en) | 2022-11-17 | 2022-11-17 | High-purity germanium detector |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117214942A (en) * | 2023-11-07 | 2023-12-12 | 清华大学 | High-purity germanium detector and preparation method thereof |
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2022
- 2022-11-17 CN CN202211441011.4A patent/CN115728808A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117214942A (en) * | 2023-11-07 | 2023-12-12 | 清华大学 | High-purity germanium detector and preparation method thereof |
| CN117214942B (en) * | 2023-11-07 | 2024-02-09 | 清华大学 | High-purity germanium detector and preparation method thereof |
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