Design, conditioning, and performance of a high voltage, high brightness dc photoelectron gun with variable gap

2014 ◽  
Vol 85 (9) ◽  
pp. 093306 ◽  
Author(s):  
Jared Maxson ◽  
Ivan Bazarov ◽  
Bruce Dunham ◽  
John Dobbins ◽  
Xianghong Liu ◽  
...  
Keyword(s):  
High Voltage ◽  
High Brightness ◽  
And Performance ◽  
Photoelectron Gun

The design, specification and performance of high-voltage surge diverters

1950 ◽  
Vol 1950 (7) ◽  
pp. 191-193
Author(s):  
H.F. Jones ◽  
C.J.O. Garrard
Keyword(s):  
High Voltage ◽  
Design Specification ◽  
And Performance

Technology of Heat-Resistant & High Voltage-Resistant Insulation Materials Based on Polymer Composite

2011 ◽  
Vol 391-392 ◽  
pp. 340-344
Author(s):  
Fang Huang
Keyword(s):  
Polymer Composite ◽  
High Voltage ◽  
Polymer Composite Material ◽  
Resin Matrix ◽  
Insulation Material ◽  
Heat Resistant ◽  
Performance Requirements ◽  
High Voltage Insulation ◽  
And Performance ◽  
The Relationship

High voltage insulation of the heat-resistant polymer composite material mainly composed of synthetic resin matrix, reinforcing materials, inorganic fillers, pigments and other components. In addition, according to the technical and performance requirements will be added in the resin matrix curing agent, thickener, mold release agents, solvents and so on. By different proportions of the resin matrix and filler and other additives, under conditions in certain insulating polymer composites were prepared to explore the relationship between components, the best formula and the ideal insulation material.

scholarly journals The Hvee 14C System at Groningen

Radiocarbon ◽  
1995 ◽  
Vol 37 (2) ◽  
pp. 649-656 ◽  
Author(s):  
Andreas Gottdang ◽  
Dirk J. W. Mous ◽  
Johannes Van Der Plicht
Keyword(s):  
Mass Spectrometry ◽  
High Throughput ◽  
High Voltage ◽  
Accelerator Mass Spectrometry ◽  
Performance Measurements ◽  
System Description ◽  
Accelerator Mass Spectrometer ◽  
And Performance ◽  
High Voltage Engineering ◽  
New Generation

Since May 1994, a new-generation accelerator mass spectrometer (AMS) has been fully operational at the Centre for Isotope Research in Groningen, The Netherlands. The fully automated and high-throughput accelerator mass spectrometry (AMS) system, manufactured by High Voltage Engineering Europa (HVEE) is dedicated to radiocarbon analysis. The HVEE 4130 14C AMS is able to analyze up to 3000 samples per year. The system is characterized by simultaneous transport of all three isotopes (12C, 13C, 14C) and 14C analysis with a precision below 0.5 pMC and a daily stability below 0.5 pMC. We present here a system description together with stability and performance measurements.

Stability Enhancement for Cold Field Emitter for Reliable Operation of the Micro-Column System

2007 ◽  
Vol 544-545 ◽  
pp. 829-832
Author(s):  
J.H. Kim ◽  
Seung Joon Ahn ◽  
Chul Geun Park ◽  
Ho Seob Kim ◽  
Dae Wook Kim ◽  
...  
Keyword(s):  
Simple Structure ◽  
Potential Candidate ◽  
High Brightness ◽  
Electron Emitter ◽  
Column System ◽  
Long Lifetime ◽  
And Performance ◽  
The Stability ◽  
Stability Enhancement ◽  
Next Generation Lithography

Recently, the micro-column has been intensively studied as a potential candidate for next-generation lithography with high-throughput capability. The micro-column has a simple structure with an electron emitter, micro-lenses, a double octupole deflector, and an Einzel lens. The structure and performance of the micro-column are dependent on the characteristics of the electron emitter. The electron emitter should have several prerequisites such as stable emission of electrons, high brightness and long lifetime. It is also necessary for the emitted electrons to have sufficiently low kinetic energy, which can be achieved by using a very sharp emission tip. In this work, we made an extremely sharp tip by electro-chemically etching the tungsten wire in 10 % KOH solution. From the Fowler-Nordheim plot, the effective radius of the tip was found to be as small as ~12 nm, which is consistent with the value measured by SEM. We also discovered that the stability of emission can be enhanced very much through thermal treatment of the tip end by irradiating the Nd:YAG laser pulse

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