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Development of X-pinch with a 200 kV pulse transformer power supply
Author
Tan, Lay Koon
Supervisor
Lee, Paul Choon Keat
Abstract
The objective of this project is to develop a first ever X-pinch at the National Institute of Education - Natural Sciences Academic Group - Plasma radiation source Laboratory with major emphasis on the designing of a High Voltage Pulse Power Supply system for it.
A High Voltage Power Supply (HVPS) that charge a Pulse Forming Line (PFL) was designed, constructed and characterized. The HVPS system consists of several stages to produce finally an extremely high voltage - 200kV in time duration of approximately 2 ps. An ultra fast high voltage capacitive voltage probe was also developed for testing of this HVPS. This capacitive probe was used in the initial testing of the HVPS as commercial voltage probes are usually not rated above 40kV.
The final product is an X-pinch which was characterized for its electrical, x-ray emission and plasma dynamics properties using various probes like V-dot, Rogowski groove, Photo Conducting Diamond (PCD), and photographic films. X-pinch plasma was generated by passing a 16 kA current through a two 5pm tungsten wire or two 1Spm gold wire. The plasma from the X-pinch was also being investigated using time integrated optical photography which revealed that there is a bright region at the X-point. Plasma was found to extend axially above and below the X-pinch. In addition, diffused and non-uniform plasma was found to extend from1 the wires forming the pinch. Evidence for the production of the Ultraviolet was also seen using Photo Conducting Diamond (PCD) detectors.
A High Voltage Power Supply (HVPS) that charge a Pulse Forming Line (PFL) was designed, constructed and characterized. The HVPS system consists of several stages to produce finally an extremely high voltage - 200kV in time duration of approximately 2 ps. An ultra fast high voltage capacitive voltage probe was also developed for testing of this HVPS. This capacitive probe was used in the initial testing of the HVPS as commercial voltage probes are usually not rated above 40kV.
The final product is an X-pinch which was characterized for its electrical, x-ray emission and plasma dynamics properties using various probes like V-dot, Rogowski groove, Photo Conducting Diamond (PCD), and photographic films. X-pinch plasma was generated by passing a 16 kA current through a two 5pm tungsten wire or two 1Spm gold wire. The plasma from the X-pinch was also being investigated using time integrated optical photography which revealed that there is a bright region at the X-point. Plasma was found to extend axially above and below the X-pinch. In addition, diffused and non-uniform plasma was found to extend from1 the wires forming the pinch. Evidence for the production of the Ultraviolet was also seen using Photo Conducting Diamond (PCD) detectors.
Date Issued
2005
Call Number
QC718.5.P45 Tan
Date Submitted
2005