Abstract: Various embodiments of the present disclosure are directed towards a magnetic resonance imaging (MRI) head coil comprising an open shield. A transmit coil surrounds a phased array receive coil and comprises a resonant birdcage structure. The resonant birdcage structure comprises multiple transmit rungs spaced in a first closed path, and inter-rung spacing at one or more first locations on the first closed path is greater than at a remainder of the first closed path. The open shield surrounds the transmit coil and comprises a non-resonant birdcage structure. The non-resonant birdcage structure comprises multiple shield rungs spaced in a second closed path. The shield rungs are elongated in parallel with the transmit rungs, and inter-rung spacing at one or more second locations on the second closed path is greater than at a remainder of the second closed path. Further, the second location(s) respectively and radially border the first location(s).

Abstract: A high temperature corrosion sensor is provided having (i) a housing having an external wall and an internal wall, the internal wall of the housing forming a chamber of the housing, (ii) a stainless steel tube inserted into the chamber, (iii) a ceramic tube wherein at least a portion of the ceramic tube is inserted into the stainless steel tube, (iv) an airflow tube that extends through the chamber, and (v) a sensor probe having a first working electrode, a second working electrode, a reference electrode, a positive electrical resistance, a negative electrical resistance, and a thermocouple, wherein at least a portion of each are encapsulated into a ceramic casting that is located at one end of the housing. Methods of measuring corrosion within a power plant environment are provided.

Abstract: An apparatus for testing an Integrated Circuit (IC) to be installed on a product substrate of a Multi-Chip Module (MCM) is disclosed. The apparatus includes a test substrate including (i) a first surface configured to receive the tested IC and at least an additional IC, (ii) a second surface that is opposite the first surface and is configured to receive electrical contacts, and (iii) first electrical traces for conveying electrical signals between the tested IC, the additional IC and the electrical contacts. The apparatus further includes a second electrical trace, which is formed in the test substrate instead of the additional IC and is configured to electrically connect between two of the first electrical traces.

Abstract: A magnetic resonance (MR) local coil and an MR apparatus are provided. The MR local coil includes at least one antenna layer, at least one first layer, at least one second layer, and at least one third layer. In this structure, at least one MR antenna is arranged on the antenna layer. The at least one first layer is arranged between the at least one antenna layer and the at least one second layer, and the at least one second layer is arranged between the at least one first layer and the at least one third layer.

Abstract: The invention relates to a method for non-destructive testing of an insulating sheath (G) of a cable (CB) made of a material of elastomeric polymer.

Abstract: Aspects of the subject technology relate to systems and methods for identifying a mud angle associated with an electromagnetic imager tool based on tool measurements made during operation of the electromagnetic imager tool. Tool measurements made by an electromagnetic imager tool operating to log a wellbore in a formation can be gathered. The tool measurements can be decomposed into two quantities along a plurality of candidate mud angles for the electromagnetic imager tool. As follows, a mud angle associated with the electromagnetic imager tool can be identified from the plurality of candidate mud angles based on an amount of correlation between the two quantities for each of the plurality of candidate mud angles.

Abstract: A magnetic field causing a difference of energy level between different spin states in the sample can be applied, a spin transition in the material can be triggered by exposing the sample to electromagnetic radiation of an energy level corresponding to the difference in energy level between the different spin states, a sensing surface of a superconducting element can be exposed to a magnetic field of the spins in the sample, the spin transition can cause, via kinetic inductance, a change in electromagnetic waves carried by the superconducting element which can be detected. A magnetic field component normal to the sensing surface, below a certain magnetic field threshold, can be applied to favor sensitivity.

Abstract: According to one aspect, an apparatus includes a first printed circuit board (PCB), the first PCB including a first interface, and a corrosion sensor assembly. The corrosion sensor assembly including a second interface arranged to be coupled to the first interface, the corrosion sensor assembly further including a signal trace field and a plurality of components, wherein the signal trace field and the plurality of components are arranged to provide an indication of whether the apparatus is in an environment that is corrosive.

Abstract: In a general aspect, a vapor cell includes a body defined by a stack of layers bonded to each other. The stack of layers includes a first end layer disposed at a first end of the body and a second end layer disposed at a second, opposite end of the body. Intermediate layers extend between the first and second end layers and define an internal cavity extending through the body between the first end layer and the second end layer. The stack of layers also includes first and second sets of tabs. The first set of tabs extends outward from the intermediate layers on a first exterior side of the body, and the second set of tabs extends outward from the intermediate layers on a second exterior side of the body. The vapor cell also includes a vapor or a source of the vapor disposed in the internal cavity.

Abstract: A optically pumped magnetometer includes a cell filled with an alkali metal; a pump light source that generates a pump light; a probe light source that generates a probe light; a signal output unit that obtains an output signal related to magnetism, which is received by the cell, based on the probe light which has passed through the cell; a coil unit that generates a static magnetic field along a pump optical axis in a region of disposition of the cell; and a computer that controls operation of the coil unit. The computer outputs a first control signal to set an intensity of the static magnetic field to a first intensity, and a second control signal to set the intensity of the static magnetic field to a second intensity different from the first intensity.

Abstract: An optoelectronic solar cell test system including an exposure and measuring device for in-line measurement of solar cells and a control and evaluation unit, the exposure and measuring device configured to carry out test measurements for generating test-measurement data on a solar cell.

Abstract: An array of optically pumped magnetometers includes a vapor cell arrangement having a wafer defining one or more cavities and alkali metal atoms disposed in the cavities to provide an alkali metal vapor; an array of light sources, each of the light sources arranged to illuminate a different portion of the one or more cavities of the vapor cell arrangement with light; at least one mirror arranged to reflect the light from the array of light sources after the light passes through the one or more cavities of the vapor cell arrangement; and an array of detectors to receive light reflected by the at least one mirror, wherein each of the detectors is arranged to receive light originating from one of the light sources.

Abstract: An information handling system may include an information handling resource, a liquid cooling system for providing cooling of the information handling resource, and a leak detection system for detecting a leak of fluid from the liquid cooling system, the leak detection system comprising a leak detection circuit having at least one moisture-sensitive portion configured to detect the presence of moisture proximate to the leak detection circuit and circuitry configured to communicate one or more electrical signals indicative of the presence or absence of moisture proximate to the leak detection circuit and a moisture wicking material mechanically coupled to the leak detection circuit and configured to transport moisture within the moisture wicking material to the at least one moisture-sensitive portion of the leak detection circuit.

Abstract: The present invention relates to a magnetometer (100) using optically detected magnetic resonance (ODMR), where a solid state material (10), such as diamond, with an ensemble of paramagnetic defects, such as nitrogen vacancies centers NV, is applied. An optical cavity (20) is optically excited by an irradiation laser (25) arranged therefore. A coupling structure (30) causes a microwave excitation (?) of the paramagnetic defects, and a permanent magnetic field (40, B_C) causes a Zeeman splitting of the energy levels in the paramagnetic defects. A probing volume (PV) in the solid state material is thereby defined by the spatially overlapping volume of the optical excitation by the irradiation laser (25), the coupling structure (30) also exciting the defects, and the constant magnetic field. The magnetometer then measures an unknown magnetic field by detecting emission (27), e.g.

Abstract: A measurement device includes: a host computer and a current source, wherein the host computer is configured to: control, when ambient temperature of a current detection device is at a preset temperature within an operation temperature range of a shunt of the current detection device, the current source to output a current with a preset current value to the current detection device; receive a calibrated current value sent by the current detection device; calculate a measurement error of the current detection device according to the preset current value and the calibrated current value; and instruct, when the measurement error is less than a preset current error, the current detection device to use the predetermined current calibration coefficient as a current calibration coefficient.

Abstract: A magnetic sensor includes a magnetic field conversion unit, a magnetic field detection unit, and two shields. The magnetic field conversion unit includes a plurality of yokes. Each yoke is shaped to be long in a Y direction, and is configured to receive an input magnetic field and output an output magnetic field. The input magnetic field contains an input magnetic field component in a direction parallel to a Z direction, and a magnetic field component in a direction parallel to the Y direction. The output magnetic field contains an output magnetic field component in a direction parallel to an X direction. The magnetic field detection unit generates a detection value according to the output magnetic field component. Each shield has such a shape that its maximum dimension in the Y direction is smaller than its maximum dimension in the X direction.

Abstract: A system includes a magnetic field sensor arrangement and a controller. The magnetic field sensor arrangement includes a first sensor chip having an integrated circuit differential magnetic field sensor circuit configured to generate a first output signal comprising first signal pulses, a second sensor chip having an integrated second differential magnetic field sensor circuit configured to generate a second output signal comprising second signal pulses, and at least one output signal terminal configured to output the first and the second output signals. The controller receives the first and the second signal pulses from the at least one output signal terminal, evaluates the first and the second signal pulses, and detects an error of an operation of the magnetic field sensor arrangement in response to the first and the second signal pulses not satisfying an expected output pattern of the first and the second signal pulses.

Abstract: A portable device is described for use with a system in which a transmitter signal is transmitted by a transmitter from within the ground during an operational procedure. The transmitter signal includes a transmission frequency that is selectable as one of a group of discrete transmission frequencies and the region includes electromagnetic noise that varies. The portable device includes a receiver that measures noise continuously along a path, with the transmitter inactive, to generate one or more indications for each discrete frequency at each location and continuously update the one or more indications for use in selecting one of the discrete frequencies as a selected transmission frequency to avoid local interference.

Abstract: A ranging system using spatially continuous filtering techniques to constrain ranging measurements, thereby improving ranging calculations between a bottom-hole-assembly and at least one target well. By taking advantage of the spatial continuity of the wellbore geometry, a quality check of a ranging measurement is performed using ranging measurements acquired at prior depths. Thus, the methods described herein provide improved ranging and direction estimates, as well as prediction of ranging and direction of the target well ahead of the bottom-hole-assembly.

Abstract: In a general aspect, a vapor cell includes a body defined by a stack of layers bonded to each other. The stack of layers includes a first end layer disposed at a first end of the body and a second end layer disposed at a second, opposite end of the body. Intermediate layers extend between the first and second end layers and define an internal cavity extending through the body between the first end layer and the second end layer. The stack of layers also includes first and second sets of tabs. The first set of tabs extends outward from the intermediate layers on a first exterior side of the body, and the second set of tabs extends outward from the intermediate layers on a second exterior side of the body. The vapor cell also includes a vapor or a source of the vapor disposed in the internal cavity.