TY - JOUR
T1 - Optimization of a low jitter, 50 kV, 100 Hz triggered spark gap with high pressure gas mixtures
AU - Chen, Y.
AU - Dickens, J.
AU - Mankowski, J.
AU - Kristiansen, M.
N1 - Funding Information:
This work was supported by ONR (Office of Naval Research).
PY - 2009/8
Y1 - 2009/8
N2 - Recent research efforts at Texas Tech University on impulse antenna phased array has needed to develop a reliable high voltage, high repetition rate switch that will operate with ultra low jitter. An ideal jitter of a small fraction of the risetime is required to accurately synchronize the array to steer and preserve the risetime of the radiated pulse. In [1], we showed the initial test system with sub-ns results for operations in different gases and gas mixtures. This paper discusses in detail 50 kV, 100 Hz switch operations with different gases. The effects of gases and gas mixtures have on switch performance which includes recovery rate and in particular jitter will be investigated. Gases tested include, dry air, H2, N2, and SF6, as well as H2-N2, and N2-SF6 gas mixtures. Switch jitter as a result of triggering conditions is discussed, also including a comprehensive evaluation of jitter as a function of formative delay in the various gases. The temperature of gas and its effects on switch jitter is also documented in this paper. A 50 , 1 nF pulse forming line is charged to 50 kV and provides the low inductance voltage source to test the different gases. Triggering is provided by a solid state opening switch voltage source that supplies ~150 kV, 10 ns risetime pulses at a rep rate up to 100 Hz in burst mode. A hermetically sealed spark gap with a Kel-F - PCTFE (PolyChloroTriFluoroEthylene) lining is used to house the switch and high pressure gas.
AB - Recent research efforts at Texas Tech University on impulse antenna phased array has needed to develop a reliable high voltage, high repetition rate switch that will operate with ultra low jitter. An ideal jitter of a small fraction of the risetime is required to accurately synchronize the array to steer and preserve the risetime of the radiated pulse. In [1], we showed the initial test system with sub-ns results for operations in different gases and gas mixtures. This paper discusses in detail 50 kV, 100 Hz switch operations with different gases. The effects of gases and gas mixtures have on switch performance which includes recovery rate and in particular jitter will be investigated. Gases tested include, dry air, H2, N2, and SF6, as well as H2-N2, and N2-SF6 gas mixtures. Switch jitter as a result of triggering conditions is discussed, also including a comprehensive evaluation of jitter as a function of formative delay in the various gases. The temperature of gas and its effects on switch jitter is also documented in this paper. A 50 , 1 nF pulse forming line is charged to 50 kV and provides the low inductance voltage source to test the different gases. Triggering is provided by a solid state opening switch voltage source that supplies ~150 kV, 10 ns risetime pulses at a rep rate up to 100 Hz in burst mode. A hermetically sealed spark gap with a Kel-F - PCTFE (PolyChloroTriFluoroEthylene) lining is used to house the switch and high pressure gas.
KW - And temperature.
KW - Formative delay
KW - High repetition rate switch
KW - Impulse antenna
KW - Low jitter
KW - Phased array
KW - Recovery rate
KW - Risetime gas mixtures
KW - Sub-ns
UR - http://www.scopus.com/inward/record.url?scp=70249115656&partnerID=8YFLogxK
U2 - 10.1109/TDEI.2009.5211842
DO - 10.1109/TDEI.2009.5211842
M3 - Article
AN - SCOPUS:70249115656
SN - 1070-9878
VL - 16
SP - 971
EP - 978
JO - IEEE Transactions on Dielectrics and Electrical Insulation
JF - IEEE Transactions on Dielectrics and Electrical Insulation
IS - 4
M1 - 5211842
ER -