144 results about "Cryostat" patented technology

The application discloses a multi-model adaptive low-temperature valve sealing performance testing device and method, and belongs to the technical field of valve detection. The device comprises: a first upper end cover of a low-temperature thermostat, wherein a to-be-tested low-temperature valve is installed on the first upper end cover through a valve support device; the valve support device is in flexible sealing cooperation with a bellows through an adjusting screw, so that the installation height and centering of the to-be-tested low-temperature valve are controlled, and low-temperature valves of different specifications are adapted; the low-temperature thermostat surrounds a first cold screen and a second cold screen; the bottom of the to-be-tested low-temperature valve is connected with one end of a cold-lead bridge through a pipe clamp and is surrounded by the first cold screen; a GM refrigerating machine comprises two-stage cold heads arranged in the low-temperature thermostat; the second cold screen surrounds the two-stage cold heads; the other end of the cold-lead bridge is connected with the two-stage cold heads; three helium supply devices are connected with the inlet and outlet of the to-be-tested low-temperature valve and the low-temperature thermostat respectively; and a vacuum pump unit is connected with the low-temperature thermostat. The application realizes rapid adaptation and accurate testing of low-temperature valves of multiple models.

The invention relates to a storage cryostat (2) for liquid helium (7), suitable for transferring liquid helium (7) from the storage cryostat (2) into an application cryostat (3), wherein the storage cryostat (2) comprises: - a vacuum-insulated helium vessel (6) for liquid helium (7), the helium vessel (6) having a vertical height HHB that can be filled with liquid helium (7), - a transfer line (4) for liquid helium (7), having an inlet opening (20) which opens into a lower region of the helium vessel (6), in particular into a lower fifth of the helium vessel (6), and - a convection-suppression system (9) which is arranged within the helium vessel (6) and impedes vertical convection of liquid helium (7) in the helium vessel (6), characterised in that the convection-suppression system (9) is formed in the helium vessel (6) over a height interval (IKS) with a vertical height HKS, where HKS ≥ 0.50 × HHB, and in that the convection-suppression system (9) impedes the vertical convection of liquid helium (7) in the helium vessel (6) over the region of the height interval (IKS) of the convection-suppression system (9). The invention provides a storage cryostat that enables simple and rapid transfer of liquid helium from the storage cryostat into the application cryostat, with minimised helium losses.

The utility model provides a low-temperature heat exchanger and a low-temperature thermostat. The low-temperature heat exchanger comprises a heat exchanger core, a heat exchanger shell and a cold head. The heat exchanger core is arranged in the heat exchanger shell, and the cold head is connected with the heat exchanger shell. The heat exchanger core internally comprises a first flow channel composed of a plurality of holes extending in the axial direction, and an inlet of the first flow channel is used for guiding in cooling fluid. The surface of the heat exchanger core comprises a plurality of protruding structures, the surface of the heat exchanger core and the inner surface of the heat exchanger shell form a second flow channel, and an outlet of the second flow channel is used for guiding out cooling fluid. The heat exchanger core comprises a through hole, and the through hole communicates with an outlet of the first flow channel and an inlet of the second flow channel. According to the structure of the first flow channel and the second flow channel in the low-temperature heat exchanger, the heat exchange area between the refrigerating fluid and the low-temperature heat exchanger can be increased, the heat exchange temperature difference between the refrigerating fluid and the low-temperature heat exchanger can be reduced, and the heat exchange efficiency of the low-temperature heat exchanger is improved.

The invention relates to a modularized and anti-noise variable-temperature electrical characterization test system and method, and the system comprises a vacuum pump, a cryostat, a refrigerator, a temperature controller, an electrical characterization system, and a computer. A sample table, a cold head, a heater and a temperature sensor are arranged in the cryostat; the vacuum pump is connected with the low-temperature thermostat through a vacuum pipeline and is used for adjusting the air pressure in the low-temperature thermostat; the refrigerating machine is connected with the cold head and is used for cooling the sample table; the temperature controller is used for collecting the temperature detected by the temperature sensor and controlling the heater; the computer is used for collecting data acquired by the temperature controller and the electrical characterization system and sending a control instruction to the temperature controller and the electrical characterization system; and the electrical characterization system is connected with the test sample on the sample table and is used for carrying out electrical characterization test on the test sample under modular configuration. According to the invention, the anti-noise capability in the data acquisition process can be improved.

Systems and techniques for facilitating scalable cryostats and cryogenic systems are provided. In one embodiment, the cryogenic system (300) may include a plurality of unit cells (304) coupled together, wherein each unit cell includes a trapezoidal frame (704) wherein the frames from adjacent unit cells are vacuum-sealed to form a continuous global vacuum enclosure, and wherein the unit cells are horizontally removable from or inserted into the plurality of coupled unit cells. Furthermore, each unit cell may include at least one temperature housing (508, 510, 512) wherein temperature housings from adjacent unit cells are coupled to form a continuous global temperature housing. Moreover, each unit cell may include at least one cryogenic payload (514) located within at least one temperature housing, which is cooled by at least one modified version of a standard dilution refrigeration unit.

Cryostat microtome, including: a main body; a cryostat arranged on and above the main body, wherein a receiving chamber is formed in the cryostat; a cutting device, located at least partially in the receiving chamber; a cooling system connected to and configured with the main body to provide a source of cold for the cryostat microtome, the cooling system includes a compressor and the compressor is a variable speed compressor.

This infrared radiation detector comprises: – a cryostat equipped with a cold finger, suitable for heat exchange with a cold source, and a window transparent to the infrared radiation to be detected; – a cold plate, mechanically fixed and in heat exchange with the cold finger; – a detection block comprising at least one detection matrix sensitive to the range of infrared wavelengths to be detected, and in heat exchange directly or indirectly with the cold plate; – a cold screen mechanically fixed and in heat exchange with the cold plate and suitable for limiting parasitic radiation, the cold screen being equipped with at least one diaphragm or baffle (9), oriented radially with respect to the general orientation of the detector, and equipped with an opening suitable for allowing the transit of the optical path resulting from the incident radiation.The free edge (13) of said at least one diaphragm or baffle (9) is structured so as to define non-linear patterns (14). Figure for the abbreviation: Fig 6.

The invention relates to the technical field of transfer devices, and provides a transfer device for a cryostat, which comprises a bottom bracket, a main body bracket arranged above the bottom bracket, and a damping mechanism, a suspension mechanism and a tensioning mechanism which are arranged between the bottom bracket and the main body bracket, at least the upper end of the main body bracket is provided with an opening for the cryostat to enter and exit the accommodating space; the damping mechanism is used for attenuating or isolating a vibration load between the bottom bracket and the main body bracket; the suspension mechanism comprises a suspension support detachably arranged at the upper end of the body support, a suspension assembly used for suspending the top end of the cryostat and a hoisting assembly used for being connected with hoisting equipment. The tensioning mechanism is arranged on the main body support and used for being connected with the bottom end of the cryostat so as to limit the bottom end of the cryostat from moving relative to the main body support. By means of the arrangement, the problem that in the prior art, when the cryostat is transferred, the cryostat is prone to being damaged is solved.

This invention provides a fully enclosed microfluidic pressure control system and method, relating to the fields of cryogenic metering and precision pressure control. The system includes a first cryogenic thermostat and a second cryogenic thermostat; a connecting pipe linking the gas phase spaces of the two thermostats to form a fully enclosed gas loop; a gas flow control valve located on the connecting pipe; an active temperature control unit thermally coupled to the second cryogenic thermostat; and a central control system that, based on the deviation between the actual pressure and the target pressure of the first cryogenic thermostat, controls the active temperature control unit to adjust the temperature of the second cryogenic thermostat to generate a pressure difference, and controls the opening of the gas flow control valve according to the deviation, allowing the working gas to transfer within the fully enclosed gas loop to regulate the internal pressure of the first cryogenic thermostat. This invention achieves zero-loss recycling of the working gas and is suitable for high-precision pressure control in applications such as ultra-low temperature physics experiments, quantum computing, and cryogenic thermostats.

On-chip cryostat and method, in particular for providing one or more quantum elements, comprising a substrate; a layer structure arranged on the substrate, wherein a sample, in particular a quantum element, can be arranged on a sample surface on the side of the layer structure opposite the substrate, and a vacuum housing surrounding the layer structure; wherein the layer structure comprises at least one ADR layer.

Inside the vacuum enclosure (101) of a cryostat, a plurality of temperature stages form an ordered series in a primary direction. They are cooled to respective cryogenically cooled temperatures with stages (104, 106) of a staged cooling system. A first dilution refrigerator (1001) comprises a first still (109) and a first mixing chamber (110), of which said first still (109) is located on a first still flange (501) and said first mixing chamber (110) is located on a first mixing chamber flange (502). A second dilution refrigerator (1002) comprises a second still (301) and a second mixing chamber (302), of which said second still (301) is located on a second still flange (504) and said second mixing chamber (302) is located on a second mixing chamber flange (505). Said first still flange (501) is thermally separate from said second still flange (504). Said first mixing chamber flange (502) is thermally separate from said second mixing chamber flange (505). Said second dilution refrigerator (1002) is configured for a larger cooling power than said first dilution refrigerator (1001).

The invention relates to an infrared imaging device (1) comprising: - an imaging system (3), - a measuring system (5) comprising: -- an array of lenses (7) situated in an image plane (9) of the imaging system, and -- an array of photodetectors (11), -- a cryostat (13) configured to cool the array of photodetectors and the array of lenses, each lens (7a, 7b) being associated with a main photodetector (11a, 11b), and each lens being configured to image an exit pupil (14) of the imaging system on an area centred on the main photodetector, the device being configured either in a first configuration, in which a distance separating two centres of adjacent main photodetectors is equal to twice a dimension of a main photodetector, or in a second configuration, in which the distance separating two centres of adjacent main photodetectors is equal to three times the dimension of a main photodetector.

Technologies for an optomechanical system include an intermediate plate having a top surface with multiple tapped holes arranged in a grid. A pair of dowel pin holes surround each tapped hole in a linear pattern. Multiple optical blocks are coupled to the intermediate plate using dowel pins positioned in the dowel pin holes and corresponding dowel pin holes defined in the bottom surface of the optical block. Each optical block includes multiple optical elements coupled to the top surface of the optical block with dowel pins. A cryostat may be coupled to the intermediate plate. A cryo-package assembly is mounted inside a cryo chamber of the cryostat. The cryo-package assembly includes a cryo device such as an ion trap covered by a machined copper lid. The lid includes a meandering passageway to allow for differential pumping in order to achieve ultra-high vacuum within the cryo-package assembly.

The invention relates to a cryostat structure (30) for a magnetic resonance apparatus (10), the cryostat structure comprising: an outer vacuum chamber (42) enclosing a vacuum region (71); a heat radiation shield (33) disposed within the outer vacuum chamber (42) and configured to surround the magnet space (72); and a conduit (60) extending through a wall of the heat radiation shield (33) and fluidly connecting the magnet space (72) and a vacuum region (71) outside the heat radiation shield (33). The invention also relates to a magnetic resonance apparatus (10) comprising the cryostat structure (30) of the invention.

The invention provides a radio frequency resonator and an ion trap experimental device comprising the same. Wherein the radio frequency resonator comprises a shielding shell, an antenna coil and at least one spiral coil; the shielding shell is of a hollow through cylinder structure and is provided with a shielding cavity and a hollow area penetrating through the shielding shell. The antenna coil is at least partially arranged in the shielding cavity and can be connected with a radio frequency signal source; the spiral coil is arranged in the shielding cavity and is in mutual inductance coupling with the antenna coil, and the spiral coil can be connected with a load; the effective length of the antenna coil in the shielding cavity can be changed so as to adjust the mutual inductance intensity with the spiral coil and realize impedance matching. The topological structure of the radio frequency resonator is designed to be the hollow cylinder, the function of placing other devices in the hollow area of the hollow cylinder is achieved, and the radio frequency resonator has the advantage that the radio frequency resonator and the ion trap can be placed in different cold heads when the radio frequency resonator is used in the cryostat. Meanwhile, impedance matching is realized by adjusting mutual inductance in a manner of stretching and retracting the length of the antenna coil without depending on an external LC circuit.

The application provides an online in-situ low-temperature high-pressure ultrafast spectroscopy device, a system and a method thereof. The high-pressure device comprises a cold shield with an optical window, a metal ring, a gasket, a first pressurized air bag, a second pressurized air bag, a pressurized metal column, a diamond anvil cell, a first temperature sensor, a second temperature sensor, a heat-conducting base, a cryostat and a gas pressure controller. The online in-situ pressure calibration and imaging system comprises a continuous light laser, the high-pressure device, online in-situ pressure optical components and an online in-situ pressure imaging system. The low-temperature high-pressure ultrafast pump-probe system comprises a femtosecond laser, the online in-situ pressure calibration and imaging system, pump-probe optical components and a pump-probe imaging system. The application realizes temperature regulation at 6-325K under high pressure with double air bag pressure regulation, realizes online in-situ free pressure regulation at low temperature, and realizes continuous regulation with an accuracy of 0.1GPa in the pressure range of 0-80GPa, and realizes online in-situ low-temperature high-pressure ultrafast spectroscopy and ultrafast dynamics measurement.

This invention discloses a universal cryogenic valve heat leakage performance testing device and method, belonging to the field of valve testing technology. It includes: a cryogenic valve to be tested installed on the upper end of a cryogenic thermostat; the valve seat of the cryogenic valve to be tested connected to a valve heat exchanger via a pipe clamp; a first cold shield surrounding the valve seat; a valve support including a first flange adapted to different cryogenic valves to be tested; two cold shields installed inside the cryogenic thermostat, both with modular sidewall designs, flexibly adaptable to different cryogenic valves to be tested; two heaters connected to a temperature controller respectively installed on the heat sink and the pipe clamp; a GM refrigeration unit installed inside the cryogenic thermostat, including two-stage cold heads; a second cold shield surrounding the two-stage cold heads; a secondary cold head with a secondary heat exchanger connected to the valve heat exchanger; a helium supply device connected to the primary heat exchanger on the primary cold head; a helium recovery device connected to the valve heat exchanger; and a vacuum pump unit connected to the cryogenic thermostat. This invention improves testing efficiency and device utilization.

The present disclosure provides an arc-shaped superconducting magnet magnetic field measurement system and method, relating to the technical field of superconducting magnet measurement, the system comprising: a cryostat for mounting the arc-shaped superconducting magnet to be measured and providing a low-temperature test environment for the arc-shaped superconducting magnet to be measured, the cryostat being provided with an arc-shaped room temperature hole; a motion track sliding through the room temperature hole, the motion track being arranged in an arc shape and having the same bending radius as the arc-shaped superconducting magnet to be measured; a driving component for driving the motion track to move along the arc line where the room temperature hole is located; and a measurement device arranged on the motion track, the measurement device being used for measuring the magnetic field parameters of the arc-shaped superconducting magnet to be measured.

Described is a brushless synchronous motor (1) with axial flow which has at least one rotor defined by a first rotor disc (2), a first plurality of permanent magnets (3) mechanically anchored to the first rotor disc (2), a stator defined by a stator crown (4) comprising a plurality of ferromagnetic cores (5) and a plurality of winding sections and a respective plurality of supporting structures (6) defining containment seats for the ferromagnetic cores (5); the winding sections are wound in the supporting structures (6), each winding section defining a plurality of coils (7) made of superconductive material (HTS coils). The motor (1) further comprises a cryostat (11) configured to define a circulation duct for a cryogenic fluid, the cryostat (11) extends about an outer perimeter of the stator and is configured to touch each coil (7) of the plurality of coils (7). The cryostat (11) has an inlet opening (12) and an outlet opening (13) to allow, respectively, the introduction and extraction of the cryogenic fluid in the circulation duct.

A magnetic resonance system comprises a magnet (210) cooled by a GM or pulse tube mechanized refrigerator which avoids the use of any liquid cryogens. As no reservoir is required, the cryostat (200) is more compact with better access to the central magnetic field, and allows the magnet (210) to be installed where there is limited ceiling height. The magnetic field to be changed at will or switched off, in contrast to liquid cooled magnets that are always on. Magnet temperature can also be changed while the magnet is at field, and this helps to get a stable field with time rather quickly, compared to the very long stabilizing time of liquid helium cooled magnets.

The invention relates to a method and system for providing electrical energy to a cooling stage of a cryostat system. The invention relates to a method for providing electrical energy to an electronic circuit located in a first cooling stage of a cryostat system operating at a first cooling temperature, where the first cooling temperature is below 273 K, where the method comprises the steps of: generating and emitting power-providing electromagnetic radiation at a location external to the first cooling stage; irradiating the photovoltaic power converter with power-providing electromagnetic radiation wherein the photovoltaic power converter is located in the first cooling stage and wherein the electronic circuit is electrically connected to the photovoltaic power converter; generating a current in the photovoltaic power converter; and providing power to the electronic circuit or biasing the electronic circuit. The method further comprises the step of transferring excess energy introduced into the first cooling stage by the power-providing electromagnetic radiation out of the first cooling stage at least by means of dissipation of the electromagnetic radiation or by means of an electric current or by means of a heat transfer powered by the electric current.

The invention belongs to the field of quantum information, and discloses a superconducting single-photon detection system, which adopts a parallel vertical compact integrated layout, and comprises a superconducting single-photon detector array arranged in a stable low-temperature area in a low-temperature thermostat; the low-temperature thermostat is used for providing and maintaining a vacuum and low-temperature environment required by the working of the superconducting single-photon detector array; the refrigerating machine compressor unit is coupled with the cryostat through a cold head and used for providing cooling capacity; the electric control module is connected with the superconducting single-photon detector array and the refrigerating machine compressor unit and is used for providing bias, signal processing and state monitoring; wherein the superconducting single-photon detector array, the cryostat, the refrigerator compressor unit and the electric control module are compactly integrated in the vertical direction. By means of the highly integrated and miniaturized system layout, the total height of the system does not exceed 0.5 m, the installation specification of the 11U standard is met, and therefore the problems that a traditional system is large in size and difficult to deploy are solved.

The invention provides a biological sample preservation device and system based on self-maintaining cold energy storage, and belongs to the technical field of biological sample low-temperature storage. Comprising a cabin body module, an upper refrigerator, a phase change energy storage device and an intelligent control system. The cabin body module is divided into a front cabin and a rear cabin, the front cabin is provided with a precise grabbing mechanism, and stable grabbing and transferring of cryopreservation tubes are achieved through cooperative work of a tank chain metal plate, a multi-axis lead screw and a four-claw air cylinder; a phase-change energy storage device is arranged in the rear cabin, a phase-change material in the phase-change energy storage device can store cold during normal power supply and release cold during power failure, and long-time self-maintenance of low temperature after power failure is achieved. The intelligent control system has a dual-mode operation function and can be automatically switched according to a power supply state, energy consumption is optimized, and sample safety is guaranteed. The problems that after a traditional storage device is powered off, samples are inactivated, grabbing operation is not accurate, and energy consumption is high are effectively solved, and the reliability, safety and energy efficiency of biological sample storage are remarkably improved.

The utility model discloses a hand rest assembly and a freezing slicer, and the hand rest assembly comprises a connecting piece used for being detachably connected with a knife rest; the hand support is arranged on the knife rest through a connecting piece, and the hand support is made of a heat insulation material. According to the hand support assembly, when the freezing slicer cuts a sample, the hand support can support the hand of an operator when the freezing slicer cuts the sample, on one hand, the hand is prevented from being swollen due to long-term suspension, and on the other hand, the hand is prevented from making contact with surrounding metal unwell due to the fact that the temperature of the freezing slicer is low.

There is provided a cryogenic link and a method of installing a cryogenic link. The cryogenic link comprises: a core and a cryostat. The cryostat comprises a flexible sleeve around the core and is configured to maintain a temperature of the core at a cryogenic temperature. The cryostat further comprises spacing means configured to maintain a spacing between the core and the flexible sleeve during expansion and contraction of the core. The flexible sleeve is suitable for fixing to an external structure at a plurality of fixed points, where each of the plurality of fixed points is separated by a distance, and a length of the cryogenic link between at least one pair of fixed points is greater than the distance between that pair of fixed points.

Systems and / or methods provided herein relate to cooling of a component within a chamber of a cryostat. A system can comprise a cryostat having a cooling plate disposed within the cryostat, and a cooling feed line extending into the cryostat from external to the cryostat, which cooling feed line is thermally coupled to the cooling plate by a heat exchanger. In one or more embodiments, the system further can comprise a bulk cooling system that employs a liquifiable gas to provide cooling, wherein the bulk cooling system is fluidly coupled to the cooling feed line. In one or more embodiments, the system further can comprise a vacuum pump disposed at the cooling return line and external to the cryostat and physically decoupled from the cryostat by a section of the cooling return line disposed between the cryostat and the vacuum pump.

The position of the ground leads in the ATC cryostat is characterized by a 120° symmetry that determines the position of the ground leads of the individual Ge detector systems, and all cable lengths and connections are absolutely identical.

Provided is a boil-off gas recondensing device (10) which can be mounted on a boil-off gas discharge line (130) for releasing the internal pressure of an ultra-low temperature liquid storage tank (112). A boil-off gas recondensation device (10) is provided with: a cryostat (12); and a recondenser (14) housed in the cryostat (12) and recondensing the boil-off gas. A cryostat (12) is provided with: a boil-off gas inflow path (18) which is connected to an introduction path (132) of a boil-off gas discharge line (130) and through which boil-off gas can flow from the introduction path (132) to a recondenser (14); and a boil-off gas outflow path (20) which is connected to an external discharge path (134) of the boil-off gas discharge line (130) and through which the boil-off gas can flow out from the after-condenser (14) to the external discharge path (134).

The invention discloses a device for testing mechanical properties of a material under an ultralow temperature condition and a use method of the device. The testing device comprises a cryostat, a sample testing mechanism, an inflating device and a stretching device, the cryostat comprises a heat insulation container, refrigeration equipment and a sample channel; the sample testing mechanism comprises a supporting rod, a stretching rod, a partition plate, a testing upper flange assembly, a bottom plate, a measuring sensor and a clamp; the inflating device is communicated with the sample channel; and the stretching device is fixedly connected with the testing upper flange assembly. Through the refrigerating machine and the heater, the test piece can be rapidly cooled and rapidly adjusted in temperature, the temperature of the test piece is rapidly adjusted, and the test efficiency can be improved.

A device for transferring liquid helium into an application cryostat comprises a storage dewar, a transfer line with a first transfer line end in the storage dewar and a second transfer line end for insertion into the application cryostat. An apparatus is provided for generating a pressure difference between the storage dewar and the application cryostat. A condensation heat exchanger, cooled by a cryocooler, condenses helium gas to liquid helium for insertion into the application cryostat. A control apparatus, using a measure of gas pressure in the application cryostat provides a control output to the apparatus for generating a pressure difference such that a volume of liquid helium transferred through the transfer line per unit of time is approximately equal to the change in volume of the helium which condenses from helium gas to liquid helium per unit of time at the condensation heat exchanger.