New Type High Voltage Generator

Author(s):  
S. Ohta ◽  
M. Watanabe ◽  
O. Nakamura

A high voltage generator has been developed with an extremely small ripple component by incorporating resistors in series in the filament transformer of the center-tapped Cockcroft Walton circuit. The rating of the prototype is 500 kV, and incorporates the following features, (See Fig. 1)1.The generator itself is perfectly symmetrical with respect to the output circuit.2.Stray capacitance (Cs) between the primary and secondary windings of the filament transformer can be reduced to negligible proportions.

Author(s):  
T. Imura ◽  
S. Maruse ◽  
K. Mihama ◽  
M. Iseki ◽  
M. Hibino ◽  
...  

Ultra high voltage STEM has many inherent technical advantages over CTEM. These advantages include better signal detectability and signal processing capability. It is hoped that it will explore some new applications which were previously not possible. Conventional STEM (including CTEM with STEM attachment), however, has been unable to provide these inherent advantages due to insufficient performance and engineering problems. Recently we have developed a new 1250 kV STEM and completed installation at Nagoya University in Japan. It has been designed to break through conventional engineering limitations and bring about theoretical advantage in practical applications.In the design of this instrument, we exercised maximum care in providing a stable electron probe. A high voltage generator and an accelerator are housed in two separate pressure vessels and they are connected with a high voltage resistor cable.(Fig. 1) This design minimized induction generated from the high voltage generator, which is a high frequency Cockcroft-Walton type, being transmitted to the electron probe.


2018 ◽  
Vol 11 (1) ◽  
pp. 39
Author(s):  
Vyacheslav Vavilov ◽  
Flur Ismagilov ◽  
Irek Khayrullin ◽  
Ruslan Dinarovich Karimov

2018 ◽  
Vol 2018 (11) ◽  
pp. 1799-1805
Author(s):  
Tobias Barth ◽  
Jens Weber ◽  
Oliver Woywode ◽  
Steffen Bernet

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