scholarly journals THE HIGH-SPEED RECORDER BASED ON SWITCH CAPACITOR ARRAY TECHNOLOGIES FOR THOMSON SCATTERING DIAGNOSTICS IN GDT

2018 ◽  
Vol 41 (2) ◽  
pp. 77-88
Author(s):  
E.A. Puryga ◽  
◽  
S.V. Ivanenko ◽  
A.A. Lizunov ◽  
A.D. Khilchenko ◽  
...  
Keyword(s):  
High Speed ◽  
Thomson Scattering ◽  
Capacitor Array ◽  
Switch Capacitor

Linearity analysis on a series-split capacitor array for high-speed SAR ADCs

2008 ◽  
Author(s):  
Yan Zhu ◽  
U-Fat Chio ◽  
He-Gong Wei ◽  
Sai-Weng Sin ◽  
Seng-Pan U ◽  
...  
Keyword(s):  
High Speed ◽  
Capacitor Array ◽  
Split Capacitor

scholarly journals Linearity Analysis on a Series-Split Capacitor Array for High-Speed SAR ADCs

VLSI Design ◽  
2010 ◽  
Vol 2010 ◽  
pp. 1-8 ◽  
Author(s):  
Yan Zhu ◽  
U-Fat Chio ◽  
He-Gong Wei ◽  
Sai-Weng Sin ◽  
Seng-Pan U ◽  
...  
Keyword(s):  
High Speed ◽  
Average Power ◽  
Sar Adc ◽  
Capacitor Array ◽  
Medium Resolution ◽  
Charge Recycling ◽  
Split Capacitor ◽  
Array Structure ◽  
Conversion Performance ◽  
Binary Weighted

A novel Capacitor array structure for Successive Approximation Register (SAR) ADC is proposed. This circuit efficiently utilizes charge recycling to achieve high-speed of operation and it can be applied to high-speed and low-to-medium-resolution SAR ADC. The parasitic effects and the static linearity performance, namely, the INL and DNL, of the proposed structure are theoretically analyzed and behavioral simulations are performed to demonstrate its effectiveness under those nonidealities. Simulation results show that to achieve the same conversion performance the proposed capacitor array structure can reduce the average power consumed from the reference ladder by 90% when compared to the binary-weighted splitting capacitor array structure.

scholarly journals High-speed fiber-based spectrometer for plasma Thomson scattering

2020 ◽  
Vol 59 (23) ◽  
pp. 7045
Author(s):  
Drew B. Elliott ◽  
Alexandros Gerakis
Keyword(s):  
High Speed ◽  
Thomson Scattering

CO2 Laser Induced Breakdown and Heating of Hydrogen in a Magnetic Mirror Field Geometry

1975 ◽  
Vol 53 (14) ◽  
pp. 1360-1366 ◽  
Author(s):  
A. A. Offenberger ◽  
N. H. Burnett
Keyword(s):  
Laser Pulse ◽  
High Speed ◽  
Ruby Laser ◽  
Thomson Scattering ◽  
Magnetic Mirror ◽  
High Speed Photography ◽  
Parabolic Mirror ◽  
Laser Induced Breakdown ◽  
Field Geometry ◽  
Breakdown Plasma

A 1 GW, 125 J CO2 laser pulse focussed by a 10 cm f.l. parabolic mirror has been used to induce breakdown and heating in 15 Torr hydrogen along the axis of a short 50 kG magnetic mirror field. Evolution of the breakdown plasma thus produced has been studied by high speed photography, ruby laser Thomson scattering, and a Mach–Zehnder interferometer. Results indicate an efficient radial confinement of plasma by the mirror field with an electron temperature much enhanced over that resulting from a fieldfree breakdown. Interferometric measurements show that breakdown results in a cylindrical plasma with an electron density minimum on axis in both cases. A monitor of the transmitted CO2 laser pulse indicates very incomplete coupling of laser radiation into the plasma column with the field applied, presumably due to refraction losses at the entrance boundary of the breakdown.

Microfabrication research at the National Submicron Facility

1983 ◽  
Vol 41 ◽  
pp. 86-89
Author(s):  
E.D. Wolf
Keyword(s):  
Integrated Circuits ◽  
Particle Physics ◽  
High Speed ◽  
New Technology ◽  
High Energy ◽  
High Energy Particle ◽  
New Science ◽  
Wide Range ◽  
Intermediate Domain ◽  
Circuit Function

Most microelectronics devices and circuits operate faster, consume less power, execute more functions and cost less per circuit function when the feature-sizes internal to the devices and circuits are made smaller. This is part of the stimulus for the Very High-Speed Integrated Circuits (VHSIC) program. There is also a need for smaller, more sensitive sensors in a wide range of disciplines that includes electrochemistry, neurophysiology and ultra-high pressure solid state research. There is often fundamental new science (and sometimes new technology) to be revealed (and used) when a basic parameter such as size is extended to new dimensions, as is evident at the two extremes of smallness and largeness, high energy particle physics and cosmology, respectively. However, there is also a very important intermediate domain of size that spans from the diameter of a small cluster of atoms up to near one micrometer which may also have just as profound effects on society as “big” physics.

Vacuum System to Minimize the Specimen Contamination of High-Performance EM

1977 ◽  
Vol 35 ◽  
pp. 68-69
Author(s):  
N. Yoshimura ◽  
K. Shirota ◽  
T. Etoh
Keyword(s):  
Electron Microscope ◽  
High Speed ◽  
High Performance ◽  
High Vacuum ◽  
Vacuum System ◽  
Pump System ◽  
Pumping System ◽  
Diffusion Pump ◽  
Almost All ◽  
Cascade Type

One of the most important requirements for a high-performance EM, especially an analytical EM using a fine beam probe, is to prevent specimen contamination by providing a clean high vacuum in the vicinity of the specimen. However, in almost all commercial EMs, the pressure in the vicinity of the specimen under observation is usually more than ten times higher than the pressure measured at the punping line. The EM column inevitably requires the use of greased Viton O-rings for fine movement, and specimens and films need to be exchanged frequently and several attachments may also be exchanged. For these reasons, a high speed pumping system, as well as a clean vacuum system, is now required. A newly developed electron microscope, the JEM-100CX features clean high vacuum in the vicinity of the specimen, realized by the use of a CASCADE type diffusion pump system which has been essentially improved over its predeces- sorD employed on the JEM-100C.

The on-line use of histogram data for high-speed correction and alignment of electron microscope images

1984 ◽  
Vol 42 ◽  
pp. 556-557
Author(s):  
William Krakow
Keyword(s):  
Power Spectrum ◽  
High Speed ◽  
Direct Memory Access ◽  
Digital Television ◽  
Contrast Transfer Function ◽  
The Past ◽  
High Resolution Tem ◽  
On Line ◽  
Correction Of Astigmatism ◽  
The Fourier Transform

In the past few years on-line digital television frame store devices coupled to computers have been employed to attempt to measure the microscope parameters of defocus and astigmatism. The ultimate goal of such tasks is to fully adjust the operating parameters of the microscope and obtain an optimum image for viewing in terms of its information content. The initial approach to this problem, for high resolution TEM imaging, was to obtain the power spectrum from the Fourier transform of an image, find the contrast transfer function oscillation maxima, and subsequently correct the image. This technique requires a fast computer, a direct memory access device and even an array processor to accomplish these tasks on limited size arrays in a few seconds per image. It is not clear that the power spectrum could be used for more than defocus correction since the correction of astigmatism is a formidable problem of pattern recognition.

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