Title :
Polarity reversal of a Superswarf x-ray machine
Author_Institution :
Pulsed Power Group, AWE, Aldermaston, UK
Abstract :
Superswarf machines deliver 30kA across a 5MV AK gap to power a high-impedance paraxial diode for x-ray radiography. In order to accommodate a positive polarity rod-pinch diode, which would offer greater radiographic resolution and contrast, the machine polarity must be reversed. This paper assesses Superswarf when run in positive polarity, utilising both electrostatic and transmission line codes, and identifies the areas of the machine which would require modification. Conclusions that Superswarf could deliver approximately 2.8MV into a 40Ω load, a 40% increase in power, with four modifications are drawn.
Keywords :
X-ray apparatus; electric machines; electric resistance; pinch effect; radiography; Superswarf X-ray machine; X-ray radiography; current 30 kA; electrostatic line code; high-impedance paraxial diode; machine polarity; positive polarity rod-pinch diode; resistance 40 ohm; transmission line code; voltage 5 MV; Electrostatics; Power transmission lines; Radiography;
Conference_Titel :
Plasma Science (ICOPS), 2013 Abstracts IEEE International Conference on
Conference_Location :
San Francisco, CA
DOI :
10.1109/PLASMA.2013.6634967
