Breakdown properties on gas rail gap switch with operating voltage of ±100kV

Breakdown properties of a gas rail gap switch are presented in this paper. The switch is a three electrode, field-distortion-triggered design and incorporated with the low inductance capacitors. The influence of trigger pulse, working voltage, and gas species (N2, and mixed gas of SF6/Ar) on breakdown characteristics is demonstrated through experiments. The experimental results demonstrate that the self-breakdown voltage is proportional to the gas pressure for SF6/Ar as well as N2 and the triggering performance is much better with wider working voltage range, shorter breakdown delay and smaller jitter for SF6/Ar compared with N2. The reason of the gas species effect is explained by the electron collision ionization coefficient alpha. With different breakdown modes of the triggered gas gap taken into consideration, it is possible to interpret the phenomenon of the orderly variation of the triggered breakdown delay and jitter according to the charging voltage, as well as other novel phenomenon.

[1]  P. Sincerny,et al.  Fast Marx for PRS drivers , 2003, Digest of Technical Papers. PPC-2003. 14th IEEE International Pulsed Power Conference (IEEE Cat. No.03CH37472).

[2]  S. Slutz,et al.  Hot dense capsule-implosion cores produced by Z-pinch dynamic Hohlraum radiation. , 2003, Physical review letters.

[3]  R.A. Cooper,et al.  Capacitor and rail-gap development for the Atlas machine Marx modules , 1995, Digest of Technical Papers. Tenth IEEE International Pulsed Power Conference.

[4]  V. Carboni,et al.  Fast Marx Generator development for PRS drivers , 2001, PPPS-2001 Pulsed Power Plasma Science 2001. 28th IEEE International Conference on Plasma Science and 13th IEEE International Pulsed Power Conference. Digest of Papers (Cat. No.01CH37251).

[5]  P. Sincerny,et al.  Fast discharge energy storage development for advanced X-ray simulators , 2005, IEEE Transactions on Plasma Science.

[6]  Douglas D. Bloomquist.  Pulsed Power Peer Review Committee Report , 2002 .

[7]  M.C. Scott,et al.  Low Inductance 180KV Switch Development For fastcap technology , 1991, Eighth IEEE International Conference on Pulsed Power.

[8]  E. Waisman,et al.  Pulse power for future and past X-ray simulators , 2002 .