39 results about "Neutron scattering" patented technology

The invention relates to a neutron magnetic focusing device control system, and the system comprises a front-end sensing unit which is used for collecting the angle, temperature and other data of a neutron magnetic focusing device; the core control unit is used for realizing synchronous control and temperature protection of a motor and a neutron source T0 signal based on data acquired by the front-end sensing unit; the feedback compensation unit feeds back the equipment state in real time and dynamically compensates the phase deviation; the man-machine interaction unit supports local and remote dual-mode control; through cooperative work of multiple units, the system can realize high-precision synchronous control, real-time state monitoring and fault alarm, the operation stability and efficiency of a neutron magnetic focusing device are effectively improved, and reliable technical support is provided for a neutron scattering experiment.

The utility model discloses an air suspension laser heating furnace for neutron scattering, which comprises a furnace chamber, a mounting platform and a base, a positioning laser, a first CCD (charge coupled device) camera and an optical position sensor are arranged on the mounting platform, and the positioning laser and the optical position sensor are matched with each other and are used for monitoring the suspension height of a sample in real time; an upper cover is arranged between the furnace chamber and the mounting platform, a heating laser, an infrared thermometer and a second CCD camera which penetrate through the upper cover are arranged at the upper end of the upper cover, and the second CCD camera is used for observing the state change of the surface of the sample; a suspension platform, a nozzle arranged on the upper end face of the suspension platform and an airflow system connected with the nozzle are arranged in the furnace chamber, the nozzle comprises a nozzle opening, and a plurality of capillary grooves are formed in the peripheral side of the nozzle opening; the airflow system is used for conveying airflow for suspension; and the nozzle is used for spraying out gas and suspended materials. According to the utility model, suspension heating is realized, and the heating temperature of 3000K can be provided for different material samples with the diameter of 3mm.

The present application relates to a kind of neutron magnetic focusing device control system, system includes front-end sensing unit, for the angle of neutron magnetic focusing device, temperature and so on Data acquisition;Core control unit, based on the data of front-end sensing unit acquisition realizes motor and neutron source T0 Signal synchronous control and temperature protection;Feedback compensation unit, real-time feedback equipment state and dynamically compensates phase deviation;Man-machine interaction unit, support local and remote dual-mode control;Through the collaborative work of multiple units, system can realize high-precision synchronous control, real-time state monitoring and fault alarm, effectively improve the operation stability and efficiency of neutron magnetic focusing device, provide reliable technical support for neutron scattering experiment.

This invention belongs to the field of materials science and engineering, and relates to an NS-TNV40 neutron-transparent alloy for high-temperature neutron scattering experiments. The alloy's composition, by weight percentage, is 39.24% Ti, 39.24% Nb, and 21.52% V. Its preparation includes batching, melting, homogenization, and forging. The alloy has a theoretical melting point of 1716℃, exhibits no neutron diffraction peaks after holding at 1000℃ for 100 hours, and demonstrates excellent high-temperature stability. It maintains a single-phase structure without phase transformation after 100 hours of service at 1000℃. It also exhibits good high-temperature oxidation resistance, with oxidation weight gain lower than that of high-purity V and VNi alloys. Mechanically, it combines high strength and high plasticity. This alloy can avoid interference from the scattering signals of the sample container itself, improve the quality of neutron scattering data, meet the requirements of high-temperature in-situ experiments, and promote the development of high-temperature neutron scattering experimental technology.

The utility model provides a kind of neutron scattering can be realized internal probe high-precision switching system, including the scattering tank with cavity, first and second probe components;First probe component includes the first guide rail extending along first direction, first mobile platform, the first probe being arranged on first mobile platform, third guide rail and first drive component;Second probe component includes the second guide rail extending along second direction, second mobile platform, the second probe being arranged on second mobile platform and second drive component;First direction is consistent with the emission direction of particle beam and perpendicular to second direction;First drive component drives first probe to move along first direction;In first position, first probe is located at its working position;In second position, third, second guide rail is butt joint;Second drive component drives second probe to move along second direction;In third position, third, second guide rail is staggered;In fourth position, second probe is located at its working position, and probe switching can be realized.

The utility model provides an in-situ neutron scattering battery device suitable for electrode heating, which comprises a conductive shell, a heating element capable of heating an electrode and a temperature measuring element capable of monitoring the temperature of the electrode in real time are arranged in the conductive shell, one end of the conductive shell is provided with a fixed adapter, and the other end of the conductive shell is provided with a temperature measuring element. And a first shielding piece and a second shielding piece are respectively arranged at two ends of the conductive shell. According to the utility model, the heating element and the temperature measuring element are utilized to carry out heating temperature precision control on the electrode under the condition that an in-situ neutron scattering experiment is not influenced, so that the possible problem of temperature gradient in a traditional experiment is avoided; by arranging the first shielding piece and the second shielding piece, background signals in neutron scattering are isolated and reduced, and the test accuracy of the in-situ neutron scattering experiment of the electrode can be achieved.

The application relates to the technical field of neutron scattering experiments, and discloses a low-temperature coupling stretching device applied to neutron experiments and a testing method thereof. The low-temperature coupling stretching device applied to neutron experiments comprises a vacuum box, a clamping assembly, a cooling assembly, a loading assembly and a compensation assembly. The clamping assembly is arranged in the vacuum box, the clamping assembly comprises two oppositely arranged clamping heads, and the two clamping heads jointly clamp a sample to be measured. The cooling assembly is configured to cool the sample to be measured in the vacuum box. The output end of the loading assembly is connected with one of the clamping heads. The output end of the compensation assembly is connected with the vacuum box, so as to drive the vacuum box, the clamping assembly, the cooling assembly and the loading assembly to move in the direction away from the loading force applied to the sample to be measured by the loading assembly. The low-temperature coupling stretching device applied to neutron experiments can test the stretching performance of the sample in a low-temperature and vacuum environment, and can guarantee the accuracy of the test result.

The application discloses a polarized neutron radio frequency flipper, and relates to the technical field of polarized neutron scattering. The polarized neutron radio frequency flipper comprises a shell, a first opening and a second opening are oppositely arranged along the length direction of the shell, a magnetic field generating device is arranged in the shell, the magnetic field generating device comprises a radio frequency magnetic field generating device for generating a radio frequency alternating magnetic field and a gradient magnetic field generating device for generating a gradient magnetic field. The radio frequency magnetic field generating device comprises a solenoid, the axis of the solenoid is arranged in line with the connecting line of the first opening and the second opening; the gradient magnetic field generating device comprises a first metal plate and a second metal plate, the first metal plate and the second metal plate are arranged on the two sides of the solenoid and are symmetrically arranged along the axis of the solenoid; the distance between the first metal plate and the second metal plate and the axis of the solenoid gradually decreases in the direction from the first opening to the second opening.

The utility model relates to the technical field of neutron scattering, in particular to a neutron scattering sample environment device. The neutron scattering sample environment device comprises a first container, a second container and a connecting piece, the first container and the second container are provided with inner cavities, the inner cavities are used for being filled with paramagnetic materials, and the first container and the second container are used for being arranged at the first end and the second end of a sample tube respectively and are provided with heat conduction faces making contact with the sample tube to conduct heat. The connecting piece is connected between the first container and the second container so as to clamp and fix the sample tube. According to the neutron scattering sample environment device, the containers are provided with the inner cavities for containing the paramagnetic materials, the two containers are located at the two ends of the sample tube respectively and clamp and fix the sample tube, and the containers make full contact with the sample tube, so that heat conduction is facilitated; the whole device is put into a superconducting magnet, and the paramagnetic material is magnetized and demagnetized, so that an ultralow-temperature environment can be provided for a sample in the sample tube.

In the present invention, a target object is irradiated with a pulsed charged particle beam to generate neutrons with which a subject is irradiated, and as a result, the neutrons scattered at the subject are detected to determine the time of flight of each of the neutrons (step S5). The determined time of flight is corrected on the basis of delay time data for estimating a delay time related to the flight of each of the neutrons (step S6). The delay time data is obtained in advance on the basis of one or both of the pulse width of the pulsed charged particle beam and the deceleration characteristic of a moderator that decelerates the neutrons toward the subject (steps S1-S4).

This invention discloses a multi-channel collimation device for neutron diffraction, belonging to the technical field of neutron scattering spectrometers. The device includes a base, separating aluminum plates, and a detector. The base has an arc-shaped structure, with two bases arranged opposite each other. Each base has multiple mounting cavities spaced circumferentially on it. Each mounting cavity contains multiple separating aluminum plates spaced vertically, with a channel for the neutron beam to pass between adjacent separating aluminum plates. The detector is configured in a one-to-one correspondence with each channel. This multi-channel collimation device can optimize the neutron signal and reduce stray background signals, thereby ensuring the accuracy of experimental results.

The invention discloses a fine collimator debugging method for a neutron time-of-flight spectrometer, which is applied to the field of neutron scattering science and technology, and comprises the following steps: acquiring diffraction intensity corresponding to left and right fine collimators at different positions when a first diffraction sample moves along a beam direction at a first preset step length, coarse debugging is carried out based on the deviation between the peak value corresponding position and the beam center position; obtaining diffraction intensity corresponding to the left fine collimator and the right fine collimator at different positions when the second diffraction sample moves at a second preset step length along the beam direction, and performing fine debugging based on the deviation between the peak value corresponding position and the beam center position; and acquiring the diffraction intensity of the third diffraction sample moving at a third preset step length along the beam direction and corresponding to the left and right fine collimators at different positions, and performing rotation debugging and synchronously correcting the residual tiny translation deviation based on the symmetrical distribution condition of the diffraction intensity relative to the beam center. According to the invention, the debugging precision of the fine collimator is effectively improved.

The utility model provides a sample collimation adjusting device for a neutron scattering rheological experiment. The sample collimation adjusting device comprises a first movement assembly, a second movement assembly, a third movement assembly and a diaphragm assembly. The second movement assembly is arranged on the first movement assembly, and the first movement assembly can drive the second movement assembly to move in the first axial direction. The third movement assembly is arranged on the second movement assembly, and the second movement assembly can drive the third movement assembly to move in the second axial direction. The diaphragm assembly is arranged on the third movement assembly, the third movement assembly can drive the diaphragm assembly to move in the third axial direction, and every two of the first axial direction, the second axial direction and the third axial direction are perpendicular. The diaphragm assembly comprises a diaphragm positioning sight bead, the diaphragm positioning sight bead is provided with a cross-shaped slit, the cross-shaped slit is used for allowing neutrons to pass through so that the neutrons can be clustered, the clustered neutrons can hit on a rheological sample of the rheological table, high-precision alignment is achieved, and the experiment effect is improved.

The utility model relates to the technical field of neutron scattering experiments, in particular to a perforated thickened metal foil heating body for a neutron scattering experiment. Comprising a first electrode plate, a second electrode plate, a niobium tube cover, a ceramic tube sleeve, niobium foil, a niobium ring and a ceramic cover, wherein the niobium tube cover is in the shape of a vertical sleeve, and a first electrode plate is welded to the top of the niobium tube cover; the second electrode plate is arranged on the periphery of the niobium tube cover in a sleeving manner, is positioned below the first electrode plate and is connected with the first electrode plate through a bolt; a ceramic tube sleeve is arranged between the first electrode plate and the second electrode plate; a niobium foil is welded on the inner surface of the niobium tube cover, and a niobium ring is welded at the bottom of the niobium foil; the bottom of the niobium ring is connected with a ceramic cover through a bolt; the heating body aims to provide an ultrahigh-temperature sample environment, and meets the urgent demand of neutron scattering experiments on high-performance heat source equipment by optimizing the structural design, lowering the experimental background, improving the heating efficiency and prolonging the service life.

The invention discloses an in-situ monitoring device and an in-situ monitoring method for a mineral precipitation behavior in a fluid mixing reaction process, and belongs to the technical field of mineralogy monitoring. The device comprises a fluid injection and control system, a fluid mixing reaction device, a movably mounted sample table and an in-situ detection system (a microscopic optical detection device, a Raman detection device or a neutron emission and detection device). Sapphire wafer windows are arranged in front of and behind the fluid mixing reaction device, so that optical signals and neutron signals can penetrate through the sapphire wafer windows; the upper end of the fluid mixing reaction device is connected with a fluid injection system, and continuous and stable injection of fluid is controlled through a high-precision high-pressure injection pump; and the lower end of the fluid mixing reaction device is connected with a vacuum pump and a liquid outlet, so that a vacuum environment condition in the reaction device can be realized before reaction. The optical imaging method and the neutron scattering method can be used for monitoring mineral crystal nucleation and growth changes in real time, and full-size change monitoring of mineral nucleation and growth in the fluid mixing reaction process can be achieved.

The invention discloses a sample positioning method applied to a neutron diffraction spectrometer for measuring residual stress of a material or a workpiece, which is applied to the field of neutron scattering science and technology and comprises the following steps: aligning a to-be-measured point of a to-be-measured sample with cross laser by using an electric displacement table to finish coarse positioning of the to-be-measured sample; measuring equipment is adopted to detect the surface coordinates of the point to be measured, the surface coordinates of the point to be measured are aligned with the beam center coordinates through an electric displacement table, and fine positioning of the sample to be measured is completed; driving the to-be-tested sample to move along the beam direction at a preset step length by using an electric displacement table, recording diffraction intensities of the to-be-tested sample at different positions, and performing deviation compensation through the electric displacement table according to a deviation between a corresponding position of a diffraction intensity peak value and a theoretical position; and repeating the measurement and deviation compensation of the diffracted intensity until the to-be-measured point completely coincides with the beam center and the diffraction centroid. The method effectively improves the positioning accuracy of the to-be-measured sample when the residual stress is measured.

An automatic sample changing sample rod for a neutron scattering experiment comprises: a support rod, a first end of which is inserted into a sample tube from an opening of the sample tube and a second end of which is located outside the sample tube; the heat insulation part is arranged on the supporting rod in a sleeving manner; the sample seat is fixedly arranged at the first end; the sample seat is used for placing at least two samples, and the samples are arranged at intervals along the length direction; the fixing part is used for being connected with the cryostat and sealing the sample tube; the fixing piece is arranged on the supporting rod in a sleeving mode, the fixing piece and the supporting rod are mutually sealed at the connecting position, and the fixing piece and the supporting rod can relatively move in the length direction. The sample seat is provided with at least two samples which are arranged at intervals along the length direction, and the supporting rod and the fixing piece are in sealed movable connection, so that the sample corresponding to the neutron beam window in position can be changed by adjusting the relative position between the supporting rod and the fixing piece, the sample changing process is simplified, and the detection efficiency is improved.

The application discloses a frozen soil moisture-ice crystal distributed monitoring system based on neutron scattering and TDR combination. A synchronous trigger response module, optical fiber transmission and hierarchical sampling mode are adopted to realize accurate alignment in time dimension, and trigger delay is controlled within plus or minus 10 mu s. Through low-temperature modification, constant temperature control and lightweight shielding design, the adaptability of the system to special working conditions of frozen soil is improved, and long-term monitoring stability is ensured. The phase state of the application is clear, and the data dimension is complete. Total water is measured by neutron scattering, and unfrozen water is measured by TDR. The ice content is obtained by the difference between the two. Combined with the double calibration framework and error compensation algorithm, the quantitative measurement of the three elements of total water, unfrozen water and ice is realized. The application accurately solves the technical combination difficulty, realizes deep cooperation, solves the volume matching problem of two kinds of technical measurement through rigid positioning components, space calibration mechanism and deformation compensation design, and reduces the space correspondence error to less than 5%.

The invention discloses a sample temperature and humidity control experiment device of a small-angle neutron scattering spectrometer, which comprises a shell assembly, a heat preservation medium conveying mechanism and a reaction medium conveying mechanism, and is characterized in that the shell assembly comprises a shell, an incident window and an emergent window, the shell is provided with an incident port, an emergent port, an incident channel and a scattering channel, the incident window is installed at the incident port, and the scattering channel is installed at the emergent port; the emergent window is mounted at the emergent opening, the incident window, the emergent window and the shell jointly define a sample cavity, and a heat preservation space is further formed between the inner wall and the outer wall of the shell; the heat-insulating medium conveying mechanism circularly conveys a heat-insulating medium to the heat-insulating space; and the reaction medium conveying mechanism circularly conveys a reaction medium with preset temperature and humidity to the sample cavity. The heat preservation medium circularly flowing in the heat preservation space arranged around the sample cavity can avoid fluctuation of temperature and humidity in the sample cavity, ensure uniformity of the temperature and humidity in the sample cavity, avoid water vapor generated by condensation of the reaction medium due to temperature change, further avoid interference of humidity and improve accuracy of neutron scattering experiment results.

The invention belongs to the technical field of neutron scattering, and relates to a high-precision full-size conical neutron conduit regulation and control system which is suitable for high-precision splicing and regulation and control of conical neutron conduits of different specifications in a neutron spectrometer. The system takes a marble base subjected to precision machining as a mounting reference surface, is provided with a bottom positioning assembly, a feeding regulation and control assembly and a conical standard sample block, and is internally provided with a pneumatic system; an encoder system, a displacement sensor and the like form a precision measurement network, position deviation is monitored in real time and dynamically adjusted, it is ensured that the splicing precision is smaller than or equal to 20 microns, and accumulative errors are reduced; the modularized positioning adsorption assembly design is adopted, and the full-size compatibility is high; a marble base is used as a main reference surface to reduce temperature influence, and a titanium alloy positioning adsorption unit is combined to improve stability; component form and position precision is ensured through a specific process, a pneumatic system prevents a glass substrate from being damaged, an encoder system simplifies operation, and efficiency is improved.

The invention discloses a multi-sample temperature and humidity control experimental device for a small-angle neutron scattering spectrometer, which comprises a shell assembly, a sample holder, a heat preservation medium conveying mechanism and a reaction medium conveying mechanism, and is characterized in that the shell assembly comprises a shell, an incident window and an emergent window, and the shell, the incident window and the emergent window jointly define a sample cavity; a heat preservation space is arranged between the inner wall and the outer wall of the shell and surrounds at least part of the sample cavity; the sample rack is used for bearing a plurality of samples and enabling two opposite surfaces of each sample to respectively face the incident window and the emergent window; the heat-preservation medium conveying mechanism is used for circularly conveying heat-preservation media to the heat-preservation space; the reaction medium conveying mechanism is used for circularly conveying a reaction medium with preset temperature and humidity to the sample cavity. According to the device, the sample cavity is subjected to heat preservation in a manner of circularly conveying a heat preservation medium into the heat preservation space, so that a sample in the sample cavity is in a constant temperature and humidity environment, and the accuracy of an experimental result is improved.

The invention relates to a neutron reference radiation field construction structure capable of reducing the proportion of scattered neutrons, and the structure is of a cubic structure through a shielding space, and comprises a shielding side wall, a shielding bottom plate, and a shielding top plate. The grid structure comprises a plurality of apertures with the same size, the grid structure is arranged in the shielding space and is parallel to the shielding bottom plate, and the distance between the grid structure and the shielding bottom plate is larger than one third of the height of the shielding side wall; the neutron terminal is placed on the grid structure and located at the center position of the grid structure, and the neutron terminal is used for emitting beam lines to form a neutron reference radiation field. According to the neutron reference radiation field, the grating structure is arranged to lift the neutron terminal, the lower portion of the neutron terminal can also become an expansion space, meanwhile, the grating structure enables neutrons to penetrate through the aperture, the number of secondary neutrons generated through interaction is reduced, and therefore the effects of reducing the neutron scattering ratio and improving the monoenergetic performance of the neutron reference radiation field are achieved.

The utility model relates to the field of neutron scattering, in particular to a porous metal foil heating body for a neutron scattering experiment. The porous metal foil heating body comprises a first electrode plate, a second electrode plate, a niobium tube cover, a ceramic tube sleeve, a porous niobium foil, a niobium ring and a ceramic cover; the first electrode plate is welded at the top of the niobium tube cover; the second electrode plate is arranged below the first electrode plate, sleeves the niobium tube cover and is connected with the first electrode plate through a bolt; a ceramic tube sleeve is arranged between the first electrode plate and the second electrode plate; two layers of porous niobium foils are welded on the inner surface of the niobium tube cover, and niobium rings are welded at the bottoms of the porous niobium foils; a ceramic cover is arranged at the bottom of the niobium ring; by optimizing the structural design, the experimental background is reduced, the heating efficiency and the uniformity of the sample temperature are improved, the service life is remarkably prolonged, the experimental flexibility is enhanced, and due to the advantages, the device has wide application prospects and important practical value in the field of neutron scattering.

The present application belongs to the technical field of neutron scattering spectrometer, and discloses a horizontal adjusting system, which comprises a vacuum box, a coarse adjusting mechanism, a fine adjusting mechanism and a sealed supporting mechanism; the coarse adjusting mechanism comprises a first supporting column, which is supported and connected to the vacuum box; the fine adjusting mechanism is arranged in the vacuum cavity and spaced from the inner wall of the vacuum cavity, and a collimation system is installed on the fine adjusting mechanism; the sealed supporting mechanism comprises a second supporting column and a bellows, one end of the second supporting column is fixedly connected to the coarse adjusting mechanism, the other end of the second supporting column passes through the wall of the vacuum box and is supported and connected to the fine adjusting mechanism, the bellows is sleeved on the outer periphery of the second supporting column, one end of the bellows is sealingly connected to the coarse adjusting mechanism, and the other end of the bellows is sealingly connected to the vacuum box. The fine adjusting mechanism is arranged in space with the inner wall of the vacuum cavity, so that the collimation system is prevented from being affected by the deformation of the vacuum box, and the collimation precision of the collimation system in the vacuum box is improved.

This invention relates to the field of neutron scattering experimental technology, and more particularly to a vacuum-cooled neutron scattering experimental apparatus. The apparatus comprises a vacuum chamber, a cooling module, and a cooling module. The vacuum chamber has a vacuum cavity capable of accommodating the sample to be tested, and an entrance port on the vacuum chamber for the neutron beam to enter and communicate with the vacuum cavity. The cooling module includes a cooling ring coaxially disposed within the vacuum chamber. The cooling module includes a compressor and a refrigerator connected via refrigerant piping. The refrigerator is disposed on the vacuum chamber, and the cold head of the refrigerator is connected to the cooling ring. By setting a cooling ring coaxial with the vacuum chamber, a uniform and stable low-temperature field can be formed within the vacuum chamber, thereby meeting the experimental requirements of the vacuum-cooled neutron scattering experimental apparatus and significantly improving the cooling effect and neutron experimental efficiency within the vacuum chamber.

The invention relates to the technical field of neutron scattering experiments, in particular to an experimental device for neutron scattering. The experimental device for neutron scattering comprises magnet equipment which is provided with a magnet hole cavity and is used for providing a magnetic field required by an experiment for a sample; the thermostat is provided with an insertion part, and the insertion part is located in the magnet hole cavity and is aligned with the center of the magnetic field; the powder sample holder is used for accommodating a powder sample, and the film sample holder is used for accommodating a film sample; and the sample rod is detachably connected with one of the powder sample support or the film sample support and is used for fixing the powder sample support or the film sample support in the insertion part. The magnet equipment and the thermostat can respectively provide a magnetic field condition and a temperature condition required by the neutron scattering experiment, and a powder sample support or a film sample support can be selected according to different sample forms, so that the requirements of the neutron scattering experiment on diversification and high precision of the sample support are met.

According to the present disclosure, a system and method for verifying a heavy ion beam range are provided. The system may include: a first detector configured to acquire a first detection signal from radiation generated from an irradiated target to which the heavy ion beam is irradiated; a second detector disposed at a certain distance from the first detector and configured to acquire a second detection signal; and a control unit configured to extract a first effective neutron signal and a second effective neutron signal from the first detection signal and the second detection signal, respectively, and to determine the heavy ion beam range within the irradiated target using a neutron scattering image reconstructed based on the first effective neutron signal and the second effective neutron signal. According to the present disclosure, by proposing a new range verification technique that applies a neutron scattering imaging technique to determine the range of a heavy ion beam, the efficiency and precision of determining the range of a heavy ion beam within a measurement target can be improved.

The application belongs to the technical field of neutron scattering, and particularly relates to a dynamic range improvement and background suppression integrated collimation / beam blocking device and method. Through integrated collimation and multi-stage beam blocking collaborative design, the parasitic background caused by Fresnel diffraction and edge scattering is reduced. Through a closed-loop tracking compensation mechanism, the beam center deviation caused by thermal drift and mechanical drift is reduced, the low-q region artifact risk is reduced. Through the replaceable absorber cassette, multi-working-condition quick switching is realized, the high-throughput and high-dynamic-range measurement requirements are considered, through the sample environment module local shielding and opening angle collaborative optimization, the additional scattering introduced by extreme environments such as high temperature and high pressure is reduced, through the dynamic mask reconstruction process, the effective data retention rate in the low-q region is improved and the measurement repeatability is improved. It simultaneously realizes that the background in the low-q region is significantly reduced, the baseline stability is improved, the beam blocking coaxial relationship can still be maintained under the condition of slow beam drift, and the error of the reconstruction system is reduced.

This invention relates to the field of neutron scattering experimental materials, proposing a neutron-diffraction-resistant, oxidation-resistant, zero-coherence scattering alloy material with a single-phase BCC structure suitable for high-temperature neutron scattering experiments, and its preparation method. This alloy contains 37.07% Ti, 59.95% Ta, and 2.98% Al, with a theoretical melting point of 1867℃. It exhibits no neutron diffraction peaks and can be used to prepare sample containers and neutron beam windows. The TiTaAl alloy shows no neutron diffraction peaks in X-ray and neutron diffraction patterns, avoiding data interference and improving experimental data quality. Its theoretical melting point is higher than existing TiZr alloys, and it maintains high strength and high ductility at high temperatures, making it suitable for high-temperature experimental environments above 800℃. After oxidation for 80 hours at 1000℃ in an atmospheric environment, the oxidation weight gain is only 43 mg / cm³. 2 It exhibits excellent antioxidant properties, improving the reusability and economy of materials. This invention achieves precise composition control and efficient manufacturing by optimizing steps such as batching, smelting, alloying, homogenization, and forging, solving problems such as inaccurate composition control, low efficiency, and high cost in existing processes, thereby improving product quality and production efficiency.