Device for detecting X-ray energy resolution

Abstract

The utility model provides a device for detecting X-ray energy resolution, and relates to the field of X-ray energy data detection. The equipment is composed of a lifting table, a translation table, an adapter plate, a rib plate, a back plate, a precise rotary table, a detection crystal assembly and an energy detector assembly. The detection crystal receives an incident X light source light beam and projects the light beam to the energy detector to generate an energy distribution map of the light beam. The detection crystal is installed on the motion table and can adjust the posture. In the process of detecting crystal adjustment, the energy detector continuously scans to obtain the condition that the full-energy peak full width at half maximum in the energy distribution spectrum is the smallest, so as to calibrate the energy resolution of the X-ray light source. The method has the advantages of high precision, high efficiency, reliable precision and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of X -ray energy data detection, especially relates to a device for detecting X -ray energy resolution. BACKGROUND

[0002] X -ray is a kind of high-energy electromagnetic wave, with the characteristics of strong penetration.X-ray instrument is a kind of detection equipment based on X -ray, mainly used for material analysis, imaging, detection and inspection.It can obtain the composition, structure and property of matter by detecting the absorption, scattering and diffraction of X -ray in matter, etc.Widely used in biomedical, aerospace, material science and other fields.

[0003] Among them, X -ray source is generally generated by X -ray tube or synchrotron radiation device and other equipment high-energy X -ray.Primary X -ray is continuous spectrum ray with continuous wavelength, also called polychromatic X -ray.To improve the resolution of experimental detection, X -ray light source usually carries out monochromation processing.Rays pass through monochromator crystal, produce Bragg diffraction, that is, the primary continuous spectrum ray is screened into X -ray of specific wavelength.And in this process, the bremsstrahlung is filtered out, and the signal-to-noise ratio of the instrument is improved.

[0004] After monochromation, the X -ray beam has a specific wavelength, but its wave band is not ideally all in a point to form a spectrum line with no width, but has a certain spectrum line width.At this time, the full-energy peak half-width in the X -ray energy distribution spectrum detected by the monochromatic light detector can be called the energy resolution of the X -ray beam.Its size reflects the monochromaticity of X -ray beam, and is one of the main factors of analysis error when X -ray instrument carries out experiment.Even in some specific experimental scenarios, only the monochromaticity of X -ray beam meets the theoretical requirements to carry out experiment normally ([1] Zhu Peiping, Gao Hongyi, Jiang Shiping, Chen Min, Cui Mingqi, Xu Zhizhan, Chen Jianwen.X -ray image holography [J].Acta Optica Sinica, 2001 (07): 850-852.)Therefore, it is of great significance to detect the energy resolution of X -ray source. UTILITY MODEL CONTENTS

[0005] Combining the series of problems encountered in practical application, a device for detecting X -ray energy resolution is proposed.Detection crystal receives incident X -ray beam, and projects the light beam on energy detector to generate energy distribution spectrum of light beam.Detection crystal is installed on motion platform, and the attitude can be adjusted.In the process of adjusting the detection crystal, energy detector continuously scans, and the full-energy peak half-width in the energy distribution spectrum is obtained to calibrate the energy resolution of the X -ray source.

[0006] The technical scheme of the utility model is as follows:

[0007] The utility model discloses a device for detecting X ray energy resolution, by lifting platform, translation stage, adapter board, rib plate, backboard, precision rotary table, detection crystal assembly, energy detector assembly constitute. Lifting platform and translation stage adjustment equipment whole movement alignment optical path, and the light beam that X ray light source sends is irradiated to detection crystal and projects on energy detector. Energy detector continuously scans the energy spectrum image of X ray light beam, and precision rotary table slowly rotates and changes the Bragg angle of incident light, finds the angle of making the full energy peak half width of X ray energy distribution atlas narrowest in this process, and this is calibrated as the minimum energy resolution of this X ray light source.

[0008] The utility model discloses a device for detecting X ray energy resolution, by lifting platform, translation stage, adapter board, rib plate, backboard, precision rotary table, detection crystal assembly, energy detector assembly constitute. Lifting platform and translation stage adjustment equipment whole movement alignment optical path, and the light beam that X ray light source sends is irradiated to detection crystal and projects on energy detector. Energy detector continuously scans the energy spectrum image of X ray light beam, and precision rotary table slowly rotates and changes the Bragg angle of incident light, finds the angle of making the full energy peak half width of X ray energy distribution atlas narrowest in this process, and this is calibrated as the minimum energy resolution of this X ray light source.

[0009] The utility model discloses a device for detecting X ray energy resolution, by lifting platform, translation stage, adapter board, rib plate, backboard, precision rotary table, detection crystal assembly, energy detector assembly constitute. Lifting platform and translation stage adjustment equipment whole movement alignment optical path, and the light beam that X ray light source sends is irradiated to detection crystal and projects on energy detector. Energy detector continuously scans the energy spectrum image of X ray light beam, and precision rotary table slowly rotates and changes the Bragg angle of incident light, finds the angle of making the full energy peak half width of X ray energy distribution atlas narrowest in this process, and this is calibrated as the minimum energy resolution of this X ray light source.

[0010] The utility model discloses a device for detecting X ray energy resolution, by lifting platform, translation stage, adapter board, rib plate, backboard, precision rotary table, detection crystal assembly, energy detector assembly constitute. Lifting platform and translation stage adjustment equipment whole movement alignment optical path, and the light beam that X ray light source sends is irradiated to detection crystal and projects on energy detector. Energy detector continuously scans the energy spectrum image of X ray light beam, and precision rotary table slowly rotates and changes the Bragg angle of incident light, finds the angle of making the full energy peak half width of X ray energy distribution atlas narrowest in this process, and this is calibrated as the minimum energy resolution of this X ray light source.

[0011] The back of backboard is punched with a threaded hole at the corresponding position of the precision rotary table rotating shaft. On both sides of the hole, two threaded holes are punched on B axis after rotating a certain angle with the hole as the center and a certain radius. Used to install energy detector assembly.

[0012] The detection crystal assembly comprises a mounting plate, a hand-adjusting displacement table, a support plate, a crystal mounting seat and a detection crystal. The crystal mounting seat has two protrusions with threaded holes on the top surface, forming a mounting groove. The detection crystal is placed in the mounting groove formed by the protrusions and fixed on the crystal mounting seat by a top screw. The mounting seat is then mounted on the support plate by screws. The support plate and the components thereon are mounted on the hand-adjusting displacement table by screws. The detection crystal assembly is mounted on the surface of the precision turntable by screws. During the rotation of the precision turntable, the detection crystal rotates in the B-axis direction, causing a small change in the Bragg angle of the incident X-ray beam, thereby completing the scanning process of the X-ray resolution.

[0013] The energy detector assembly comprises a support cantilever, a horizontal support plate, a connecting rib plate, a detector clamping plate and an energy detector. The support cantilever is a long strip plate with a through hole at one end corresponding to the position of the threaded hole on the back plate, and two circular arc notches centered on the through hole and having a radius equal to the distance from the center threaded hole to the threaded holes on both sides of the back plate. The other end of the support cantilever has threaded holes on the back surface for fixing the connecting rib plate. After aligning the edges of the support cantilever and the horizontal support plate, the connecting rib plate is placed at the inner corner position of the combination, and the three are fixed as a whole by screws. The detector clamping plate is fixed on the horizontal support plate by screws, and has countersunk through holes corresponding to the threaded holes of the energy detector.

[0014] Further, the energy detector assembly is fixed as a whole on the back plate by screwing the screws through the through hole on the support cantilever and into the threaded holes on the back plate. Due to the two circular arc notches on both sides of the through hole on the support cantilever, the energy detector cantilever assembly can be rotated in the B-axis direction within a certain range with the precision turntable rotation axis as the center, so as to adjust the angle of the energy detector assembly coaxially with the detection crystal.

[0015] The utility model mainly has following advantages:

[0016] The utility model adjusts the angle of the incident light by the precision turntable, and obtains high-precision energy resolution data by continuously scanning the energy spectrum image of the X-ray beam by the energy detector. The angle of the energy detector can be adjusted to adapt to different specific wavelength X-ray sources. The adapter plate, rib plate and back plate can support and fix the components, ensuring the stability and reliability of the detection results.

[0017] This invention features a simple component structure that is easy to assemble and disassemble, and convenient to move and use. Compared to traditional X-ray energy resolution detection methods, the device of this invention is smaller and lighter, making it easier to carry and move, and can be used in various locations such as laboratories, hospitals, and factories. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a device for detecting X-ray energy resolution;

[0019] Figure 2 This is a schematic diagram of a device used to detect X-ray energy resolution, viewed from the rear.

[0020] Figure 3 This is a schematic diagram for testing the crystal assembly;

[0021] Figure 4 This is a schematic diagram of the energy detector assembly;

[0022] In the diagram: 1-Precision turntable, 2-Detection crystal assembly, 3-Energy detector assembly, 4-Backplate, 5-Support rib, 6-Adapter plate, 7-Translation stage, 8-Lifting stage, 201-Mounting plate, 202-Manually adjustable displacement stage, 203-Support plate, 204-Crystal mounting base, 205-Detection crystal, 301-Energy detector, 302-Detector clamping plate, 303-Horizontal support plate, 304-Connecting rib plate, 305-Support cantilever. Detailed Implementation

[0023] The following detailed description, with reference to the accompanying drawings, of a practical embodiment of an apparatus for detecting X-ray energy resolution, is provided in conjunction with the embodiments of this utility model. The described examples are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the protection scope of this utility model.

[0024] like Figure 1 As shown, the translation stage 7, lifting stage 8, and precision turntable 1 are all standard products customized for this utility model. The translation stage 7 is mounted on the lifting stage 8 by screws passing through its own mounting holes. The adapter plate 6 is mounted on the platform of the translation stage 7 by screws. The back plate 4 and the support rib 5 are connected together by screws to form a whole and are mounted on the adapter plate 6 by screws. The back plate 4 has mounting holes for mounting the precision turntable 1 and the energy detector assembly 3. The support rib 5 provides reinforcement support to the back plate, ensuring the stability of the equipment during operation.

[0025] like Figure 1 , Figure 2As shown, the precision turntable 1 is fixed to the backplate 4 by screws passing through its own mounting holes and screwing into the threaded holes on the backplate 4. The energy detector assembly 3 is mounted behind the backplate and is fixed to the backplate 4 by screws passing through the mounting holes and arc-shaped slots on one end of the support cantilever 305 and screwing into the corresponding threaded holes on the backplate 4. The detection crystal assembly 2 is mounted on the table surface of the precision turntable 1 by screws.

[0026] like Figure 3 As shown, the crystal mounting base 204 has two bosses with threaded holes on its sides at the center of its surface, forming a slot for mounting the detection crystal 205. During installation, the detection crystal 205 is slid into the slot from the surface of the crystal mounting base 204, and the set screws are tightened from both sides to secure the detection crystal 205. The crystal mounting base 204 is then mounted on the support plate 203 with screws, and the two are then mounted as a whole on the table surface of the manual adjustment stage 202 with screws. The manual adjustment stage 202 is fixed to the mounting plate 201 with screws passing through its own mounting holes. The assembly of the detection crystal assembly 2 is now complete.

[0027] like Figure 2 and Figure 4 As shown, the support cantilever 305 is a long strip plate with a mounting hole and two arc-shaped grooves centered on this mounting hole on one end surface, and a threaded hole at the other end. During installation, the horizontal support plate 303, connecting rib plate 304, and support cantilever 305 are placed together. Screws are passed through the through holes on the connecting rib plate 304 and then screwed into the corresponding threaded holes on the horizontal support plate 303 and support cantilever 305 to fix the three components into a single unit. Two detector clamping plates 302 are then screwed onto the horizontal support plate 303, forming a mounting groove. The energy detector 301 is then attached to the surface of the horizontal support plate 303, inserted into the groove, and screws are passed through the through holes on both sides of the detector clamping plate 302 and screwed into the mounting holes of the energy detector 301, completing the installation and fixation of the energy detector 301.

[0028] like Figure 1 and Figure 2 As shown, the lifting platform 8 allows the device to be positioned in the Z-axis direction, and the translation platform 7 allows the device to be positioned in the Y-axis direction. The precision turntable 1 drives the detection crystal assembly to rotate in the B-axis direction around the turntable's rotation axis. The energy detector assembly 3 can be adjusted by adjusting the screw at one end of the support cantilever, using its mounting hole as an axis, to rotate along the two arc grooves in the B-axis direction, thereby adjusting the detector's initial angle.

[0029] In the energy resolution detection of an X-ray source, the device is installed at a proper position, so that the detection crystal passes through the light path of the X-ray source. According to the specific wavelength of the radiation spectrum of the X-ray source to be detected, the initial angle of the detector is adjusted to be consistent with the diffraction angle when the wavelength produces the maximum diffraction peak. The lifting platform and the translation platform are adjusted, so that the detection crystal is located at the center of the X-ray beam. During the continuous operation of the energy detector, the precision turntable slowly rotates to drive the detection crystal to rotate. During the continuous scanning, the position at which the full energy peak half width in the X-ray energy distribution map is the narrowest is found, and the energy resolution at this time is marked as the minimum energy resolution of the X-ray source.

[0030] Finally, it should be pointed out that the above-described examples are preferred examples of the present application and do not limit the present application. Any modification within the spirit and principle of the present application, such as replacement, improvement, etc., should be included in the content of the present application.

Claims

1. An apparatus for detecting X-ray energy resolution, characterized by: The utility model discloses a detection device for X-ray light source, which is composed of a lifting platform, a translation platform, an adapter plate, a rib plate, a back plate, a precision rotary table, a detection crystal assembly and an energy detector assembly.

2. A device for detecting X-ray energy resolution as claimed in claim 1, characterized in that: The back plate and the rib plate are integrally installed on the adapter plate through screws.

3. A device for detecting X-ray energy resolution as claimed in claim 1, characterized in that: The detection crystal assembly is installed on the top surface of the precision rotary table through screws.

4. A device for detecting X-ray energy resolution as claimed in claim 1, characterized in that: The energy detector assembly is installed on the back surface of the back plate through screws. The lifting platform and the translation platform are adjusted as a whole to align the light path. The back surface of the back plate is provided with a threaded hole corresponding to the rotation axis of the precision rotary table. Two threaded holes are further provided on both sides of the hole. The detection crystal assembly comprises a mounting plate, a manual displacement table, a support plate, a crystal mounting seat and a detection crystal. The crystal mounting seat is provided with two protrusions with threaded holes on the top surface, forming an installation groove. The detection crystal is placed in the installation groove formed by the protrusions and is fixed on the crystal mounting seat through a top screw. The energy detector assembly comprises a support cantilever, a horizontal support plate, a connecting rib plate, a detector clamping plate and an energy detector. The support cantilever is a long strip plate, one end of which is provided with a through hole corresponding to the threaded hole on the back plate and two circular arc notches with the through hole as the center and the distance from the central threaded hole to the threaded holes on both sides of the back plate as the radius.

Images