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公开(公告)号：US20230094745A1
公开(公告)日：2023-03-30
申请号：US17904654
申请日：2021-01-29
发明人： Daniel SCHMIDIG
IPC分类号： G01R33/31
摘要： An NMR apparatus having a magnet system for generating a homogeneous static magnetic field B0 along a z direction, with a sampling head (1) comprising an RF transmitting and receiving coil system (2) and an opening (3) extending in the z direction for receiving a sample tube (4) containing a sample substance to be analyzed by means of NMR measurement, a compensation element (5) being present which at least partially compensates for disturbances in the homogeneous magnetic field B0 due to the sample substance and the material of the sample tube at the sample end of the sample tube that protrudes farthest into the sampling head during measuring operation, is characterized in that the compensation element is arranged outside the sample tube protruding into the sampling head during measuring operation of the NMR apparatus and in the z direction below the sample end, and is mounted so as to be movable, in particular displaceable, in the z direction. Thus, the compensation element can nestle against the sample tube during operation without problem. In this way, the susceptibility jump and the resulting B0 field disturbance in the lower region of the NMR-active sample liquid caused by the lower end of the sample tube are effectively minimizable with particularly uncomplicated technical means.
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公开(公告)号：US20220163610A1
公开(公告)日：2022-05-26
申请号：US17527735
申请日：2021-11-16
IPC分类号： G01R33/3815 , G01R33/3873 , G01R33/38 , H01F6/04
摘要： In a magnet system: —a superconducting main field magnet (7) generates a magnetic field in a first sample volume (16), —a superconducting additional field magnet (22) generates another field in a second sample volume (24), —a cryostat (2) has a cooled main coil container (6), an evacuated RT (room temperature) covering (4), and an RT bore (14) which extends through the main and the additional field magnets, and —a cooled additional coil container (21) in a vacuum. The RT covering has a flange connection (17) with an opening (19) through which the RT bore extends, a front end of the additional coil container protrudes through the opening into the RT covering such that the additional field magnet also protrudes through the opening into the RT covering, and a closure structure (20) seals the RT covering between the flange connection and the RT bore.
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3.发明申请公开(公告)号：US20210301979A1
公开(公告)日：2021-09-30
申请号：US17218311
申请日：2021-03-31
发明人： Patrick Wikus
摘要： A mobile liquefaction plant (7) for liquefying helium, includes a liquefaction device (8) that liquefies helium, an intermediate storage tank (9) for liquefied helium, a cleaning device (29) which removes non-helium components from the helium and is connected upstream of the liquefaction device, and an additional collecting device (25) that collects gaseous helium which evaporates when an application cryostat (4) is filled with liquid helium and that includes a container (26) with a flexible wall and which stores the collected gaseous helium approximately at atmospheric pressure. The container (26) has an available container volume of at least 5 m3. Systems provided with such a mobile liquefaction plant exhibit an improved recovery of helium from application cryostats in a simple and cost-effective manner.
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公开(公告)号：US11073583B2
公开(公告)日：2021-07-27
申请号：US16827856
申请日：2020-03-24
发明人： Roger Meister , Reto Schmid , Sven Sieber
摘要： An NMR spectrometer (1) with a magnet system (2), which has a bore (3) through the magnet center (4) for inserting a measuring sample (5) in a transport container (7), and with a transport device for pneumatic transport of the sample through a transport channel (8) into and out of the magnet system. The transport device includes a mechanical interface (9) with a mounted exchange system (10) which has parking receptacles (11) temporarily storing the transport containers. In a transport position, the parking receptacle is inserted into the transport channel, to be loaded with a transport container, removed from the transport channel for temporarily storing the transport container, and reinserted into the transport channel for further transport of the transport container. In the transport position, the parking receptacle forms a part of the transport channel, which permits a faster automated change of the measuring samples in short measurement cycle times.
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公开(公告)号：US10732239B2
公开(公告)日：2020-08-04
申请号：US15592889
申请日：2017-05-11
发明人： Patrick Wikus , Joerg Hinderer
摘要： A cryostat system is kept at a cryogenic operating temperature without providing or supplying cryogenic fluids by a cryocooler. The cryostat system includes a superconducting magnet arrangement and a heat sink apparatus to prolong the time before the superconducting magnet arrangement quenches/returns to the normally conducting state if active cooling fails. The heat sink apparatus includes magnetocaloric material and is thermally connected to the superconducting magnet arrangement and/or to parts of the cryostat system through which ambient heat can flow to the superconducting magnet arrangement. In this way, the cryostat system can be operated in a truly “cryogen-free” manner while maintaining a sufficiently long time to quench in the event of potential operational malfunctions.
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6.发明授权公开(公告)号：US10655783B2
公开(公告)日：2020-05-19
申请号：US15680313
申请日：2017-08-18
申请人： Bruker BioSpin AG
发明人： Patrick Wikus , Joerg Hinderer
摘要： A cryostat arrangement includes a superconducting magnet to be cooled by an active cryocooler. The cryocooler includes a coolant circuit with a compressor, a cold head, and a cold finger in thermal contact with the magnet. A volumetric vessel containing cryogenic fluid is thermally coupled to the magnet. The volumetric vessel is connected to the coolant circuit by a pressure-resistant line. A fluidic component influences the flow rate through the line in a defined manner such that the cryogenic fluid flows between the volumetric vessel and the coolant circuit with a time constant of at least 15 minutes. The cryostat can be operated in a “cryogen-free” manner and permits a sufficiently long time to quench in the event of operational malfunctions.
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公开(公告)号：US20210358666A1
公开(公告)日：2021-11-18
申请号：US17317330
申请日：2021-05-11
发明人： Joerg Hinderer , Stephen Alfred March , Franck Borgnolutti , Dmitry Eshchenko , Stephan Heiss , Pierre-Alain Bovier
IPC分类号： H01F6/00 , H01F6/04 , H01F6/06 , G01R33/3815 , G01R33/38
摘要： A superconductor magnet system (2) includes a cryostat (4), a superconductor bulk magnet (5), and a cryogenic cooling system (12). The bulk magnet (5) has at least N axially stacked bulk sub-magnets (6a-6c), with N≥3. Between each two axially neighboring bulk sub-magnets, an intermediate body (7a-7b) is arranged. The intermediate bodies (7a-7b) are made from a non-metallic thermal insulator material. The cryogenic cooling system (12) is adapted for independently controlling the temperature of each bulk sub-magnet (6a-6c), and has, for each bulk sub-magnet, a temperature sensor (16a-16c) for sensing the temperature of the respective bulk sub-magnet and an adjustment unit (13a-13c) for adjusting a heating power and/or a cooling power at the respective bulk sub-magnet.
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公开(公告)号：US20210192350A1
公开(公告)日：2021-06-24
申请号：US17247609
申请日：2020-12-17
发明人： Christine Bolliger , Oliver Horlacher , Jochen Klages , Irina Galiash , Marco Glur , Fabrice Moriaud
摘要： Training a neural network for signal analysis in NMR spectra may use a plurality of computed NMR raw spectra, each raw spectrum being associated with a different NMR active molecule having a known number of protons (#P). Peaks of the raw spectra may be broadened to generate a broadened spectrum for each raw spectrum. For each broadened spectrum, its integral function may be computed to count the number of protons associated with peaks of the respective broadened spectrum. Signal intervals may be identified as intervals in the broadened spectrum where the integral function increases approximately by multiples of the value associated with a single proton so that the total number of counted protons matches the known number of protons (#P) of the associated molecule. The obtained spectra with associated labels for the identified signal intervals are provided as the training data set to the neural network.
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公开(公告)号：US20210151230A1
公开(公告)日：2021-05-20
申请号：US17085314
申请日：2020-10-30
摘要： Charging method for a superconductor magnet system with reduced stray field, weight and space includes: arranging the system within a charger magnet bore; with Tmain>Tmaincrit and Tshield>Tshieldcrit, applying a current Icharger to the charger magnet and increasing Icharger to a first current I1>0; lowering a main superconductor bulk magnet temperature Tmain to an operation temperature Tmainop, with Tmainop Tshieldcrit; lowering Icharger to a second current I2
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公开(公告)号：US10746823B2
公开(公告)日：2020-08-18
申请号：US16745679
申请日：2020-01-17
发明人： Jonathan De Vries , Sven Sieber , Roger Meister
IPC分类号： G01R33/30
摘要： A transport device for transporting an NMR sample to a probe head (16), having a shuttle (15) and a locking apparatus (3) for the rotor (5), which, when attaching the shuttle to the probe head, releases the rotor, and having a detecting apparatus for detecting the rotor in the shuttle. The probe head has a positioning apparatus (2), which holds the probe head in a defined measuring position relative to the shuttle. The detecting apparatus includes a sensor line, which transmits a signal dependent on the position of the probe head to the shuttle's end. A first portion (1a) of the sensor line is mounted inside the shuttle and extends from the rotor in a transport state to the end of the shuttle. A second portion (1b) of the sensor line is mounted inside the probe head and, in the measuring position, is directly adjacent to the first portion.
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