Modelling and Electrical Characteristics of the Thailand Plasma Focus-II (TPF-II)

The Thailand Plasma Focus II (TPF-II) is a 3.3 kJ dense plasma focus that was developed at Walailak University, Thailand. The aim of the device is to study the production of ion beams in the keV energy range and their applications for the color modification of gemstones. A high-energy ion beam is produced by heating and acceleration in the pinch phase of the plasma focus. The heating process is determined by the maximum electrical current, which can be optimized by variation of the system’s inductance. Lee model code was implemented to optimize the configuration of the electrodes. The current waveforms for the different initial conditions were used to obtain the system’s inductance, which was verified by a short circuit test. It was found that the inductance and resistance were about 153 nH and 12 mΩ, respectively.

[1]  S. Lee,et al.  Scaling Laws for Plasma Focus Machines from Numerical Experiments , 2010 .

[2]  H. Chuaqui,et al.  Ion beam emission in a low energy plasma focus device operating with methane , 2005 .

[3]  M. Sumini,et al.  Short circuit tests on a 150 kJ, 1 Hz repetitive Plasma Focus , 2006 .

[4]  J Promping,et al.  Determination of the total inductance of TPF-I , 2015 .

[5]  S. Lee,et al.  Preliminary Results of Kansas State University Dense Plasma Focus , 2012, IEEE Transactions on Plasma Science.

[6]  S H Saw,et al.  In situ determination of the static inductance and resistance of a plasma focus capacitor bank. , 2010, The Review of scientific instruments.

[7]  C. Xiao,et al.  Common features of particle beams and x-rays generated in a low energy dense plasma focus device , 2015 .

[8]  S. Saw,et al.  Numerical Experiments Providing New Insights into Plasma Focus Fusion Devices , 2010 .

[9]  T. L. Tan,et al.  Soft X-ray optimization studies on a dense plasma focus device operated in neon and argon in repetitive mode , 2004, IEEE Transactions on Plasma Science.

[10]  N. K. Neog,et al.  Comparative study of neutron emission from a plasma focus device using two different anode shapes , 2016 .

[11]  M. Nisoa,et al.  Preliminary numerical study of Thailand Plasma Focus II (TPF-II) design , 2014 .

[12]  C. S. Wong,et al.  Scientific status of plasma focus research , 1998 .

[13]  Sing Lee.  An energy-consistent snow-plough model for pinch design , 1983 .

[14]  R. Rawat,et al.  Neutron Emission Characteristics of NX-3 Plasma Focus Device: Speed Factor as the Guiding Rule for Yield Optimization , 2012, IEEE Transactions on Plasma Science.

[15]  L. Soto.  New trends and future perspectives on plasma focus research , 2005 .

[16]  M. Habibi.  Angular distribution of ion beam emitted from a 3.5 kJ plasma focus device using different shapes of anodes , 2016 .

[17]  S. Lee.  Plasma Focus Radiative Model: Review of the Lee Model Code , 2014, Journal of Fusion Energy.

[18]  H. Yousefi,et al.  Effect of the insulator length on Mather-type plasma focus devices , 2007 .