scholarly journals Low-Temperature Properties of the Magnetic Sensor with Amorphous Wire

Sensors ◽  
2020 ◽  
Vol 20 (23) ◽  
pp. 6986
Author(s):  
Dongfeng He ◽  
Kensei Umemori ◽  
Ryuichi Ueki ◽  
Takeshi Dohmae ◽  
Takafumi Okada ◽  
...  
Keyword(s):  
Low Temperature ◽  
Liquid Helium ◽  
Room Temperature ◽  
Magnetic Sensor ◽  
Liquid Helium Temperature ◽  
Coaxial Cable ◽  
Amorphous Wire ◽  
Helium Temperature ◽  
Sensing Element ◽  
The One

We found that a magnetic sensor made of a coil wound around a 5 f0.1 mm (Fe0.06Co0.94)72.5Si2.5B15 (FeCoSiB) amorphous wire could operate in a wide temperature range from room temperature to liquid helium temperature (4.2 K). The low-temperature sensing element of the sensor was connected to the room-temperature driving circuit by only one coaxial cable with a diameter of 1 mm. The one-cable design of the magnetic sensor reduced the heat transferring through the cable to the liquid helium. To develop a magnetic sensing system capable of operating at liquid helium temperature, we evaluated the low-temperature properties of the FeCoSiB magnetic sensor.

Investigation of AlGaN∕AlN∕GaN heterostructures for magnetic sensor application from liquid helium temperature to 300°C

2008 ◽  
Vol 92 (4) ◽  
pp. 043504 ◽  
Author(s):  
L. Bouguen ◽  
S. Contreras ◽  
B. Jouault ◽  
L. Konczewicz ◽  
J. Camassel ◽  
...  
Keyword(s):  
Liquid Helium ◽  
Magnetic Sensor ◽  
Liquid Helium Temperature ◽  
Helium Temperature ◽  
Sensor Application

Radiation-Induced Movement of a Mercury Stain at Room Temperature and Liquid Helium Temperature

1982 ◽  
Vol 40 ◽  
pp. 376-377
Author(s):  
M. K. Lamvik ◽  
K. -H. Müller ◽  
K. Weiss
Keyword(s):  
Electron Microscope ◽  
Radiation Damage ◽  
Liquid Helium ◽  
Heavy Element ◽  
Room Temperature ◽  
Liquid Helium Temperature ◽  
Helium Temperature ◽  
Radiation Induced ◽  
Preliminary Study ◽  
Effects Of Radiation

Cryomicroscopy at liquid helium temperature has shown promise in protecting organic materials from the effects of radiation damage, and it might be expected that sensitive heavy-element stains would be similarly protected. We have made a preliminary study of a positively-stained protein specimen using the superconducting-objective electron microscope at Berlin. We have used the mercury stain TAMM, solubilized with penicillamine (TAMM-pen3), which is known to be radiation-sensitive, on tropomyosin paracrystals of the type made by Ohtsuki. Specimens were treated with 10μM TAMM-pen3 on the grid for times ranging from 15 min to 11 hr, then were washed with 1 ml water, blotted and dried. Staining time had little effect on our results. Here we are not studying the protein or stain specificity; our interest is in the movement of the stain, which we can clearly demonstrate.

Infrared Spectroscopy of Intersitial Oxygen in Silicon

1985 ◽  
Vol 59 ◽  
Author(s):  
Bernard Pajot ◽  
Bernard Cales
Keyword(s):  
Infrared Spectroscopy ◽  
Low Temperature ◽  
Temperature Dependence ◽  
Liquid Helium ◽  
Isotope Shift ◽  
Room Temperature ◽  
Interstitial Oxygen ◽  
Helium Temperature ◽  
Temperature Spectrum ◽  
Weak Band

ABSTRACTA discussion of the isotope shift of the low temperature spectrum of the stretching mode of interstitial oxygen (Oi) in silicon introduces IR results showing the interaction of Oi with the silicon lattice. Evidence is given that the temperature dependence of a combination band observed at liquid helium temperature (LHT) at 1205.7 cm−1 is responsible for the room temperature (RT) band at 1227 cm−1 and that a weak band near 1013 cm−1 is an overtone of the 518 cm−1 band.

Residual Stress Analysis of Insulation Coatings for Magnet Technologies

2013 ◽  
Vol 58 (3) ◽  
pp. 673-676
Author(s):  
D. Guney
Keyword(s):  
High Temperature ◽  
Liquid Helium ◽  
Room Temperature ◽  
High Temperature Superconductor ◽  
Maximum Stress ◽  
Sol Gel ◽  
Liquid Helium Temperature ◽  
Helium Temperature ◽  
Temperature Ranges ◽  
Surface Morphologies

Abstract High temperature MgO-ZrO2 insulation coatings were grown on long-length Stainless-Steel (SS) tapes by reel-to-reel sol-gel method for applications of High Temperature Superconductor/Low Temperature Superconductor (HTS/LTS) coils and magnets. The residual stresses were investigated analytically at various temperature ranges, 580°C to 25°C (room temperature) and -196°C (liquid helium temperature), and 630°C to 25°C and -196°C for different thicknesses to be 13, 12, and 7 μm. The maximum stress values were obtained to be 1.92 GPa in tension for SS substrate with the 13 μm coating and -2.42 GPa in compression for the 7 μm MgO-ZrO2 coating in the temperature range between 630°C and liquid helium temperature. The surface morphologies and microstructure of sample were also characterized using a scanning electron microscope (SEM). SEM observations revealed that MgO-ZrO2 coatings have a mosaic like crack structure.

Flight Qualification and Circuit Development of Sensor Front-End Electronics for PACS/Hershel at Liquid Helium Temperature

2007 ◽  
Vol 4 (4) ◽  
pp. 130-135
Author(s):  
Patrick Merken ◽  
Tim Souverijns ◽  
Jan Putzeys ◽  
Ybe Creten ◽  
Chris Van Hoof
Keyword(s):  
Liquid Helium ◽  
Room Temperature ◽  
Short Circuit ◽  
Cmos Technology ◽  
Low Noise ◽  
Temperature Cycling ◽  
Liquid Helium Temperature ◽  
Electrical Performance ◽  
Helium Temperature ◽  
Assembly Method

In the framework of the development of the European Space Agency's Herschel Space Observatory (HSO), IMEC designed the cold-readout electronics (CRE) for the PACS instrument. Key specifications for this circuit were high linearity, low power consumption, high uniformity, and very low noise at an operating temperature of 4.2K (liquid helium temperature, LHT). To ensure high production yields and uniformity, relatively easy availability of the technology, and portability of the design, the circuit was implemented in a standard CMOS technology. The circuits are functional at room temperature, which allows screening prior to integration and qualification and has an important impact on the production yield and time. The circuit was mounted on an Al2O3 substrate for optimum electrical performance. On the same substrate, bias signal generation, short-circuit protection circuitry, and decoupling capacitors for the power lines were integrated. This led to a relatively complex substrate containing over 30 passives and one die, integrated by means of conducting and nonconducting glue and nearly 80 wire bonds. Because the detector arrays will be cooled down to 4.2K prior to launch, reliability and launch-survivability of the mounted substrate at this temperature and in this harsh environment had to be demonstrated. For this purpose, the quality and associated reliability of every assembly step is verified during substrate mounting. This included verification of the compatibility of the bond material, optimization of the bond yield, and temperature cycling (between room temperature and LHT) of the devices. Other tests on qualification models would focus on circuit functionality under proton and gamma irradiation, cryogenic vibration tests to demonstrate launch survivability, and exhaustive temperature cycling to qualify the assembly procedure. We present in this paper the complete integration and qualification of the developed circuits, including assembly and verification during production of the flight models and qualification of the assembly method on the qualification models.

Water accumulation as a function of temperature on specimens in an electron microscope cold stage

1986 ◽  
Vol 44 ◽  
pp. 114-115 ◽  
Author(s):  
M.K. Lamvik ◽  
D.A. Kopf ◽  
S.D. Davilla ◽  
J.D. Robertson
Keyword(s):  
Electron Microscope ◽  
Mass Loss ◽  
Liquid Helium ◽  
Liquid Nitrogen ◽  
Liquid Nitrogen Temperature ◽  
Liquid Helium Temperature ◽  
Helium Temperature ◽  
Cold Stage ◽  
Water Accumulation ◽  
Better Than

Last year we reported1 that there is a striking reduction in the rate of mass loss when a specimen is observed at liquid helium temperature. It is important to determine whether liquid helium temperature is significantly better than liquid nitrogen temperature. This requires a good understanding of mass loss effects in cold stages around 100K.

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