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Study on strip spiral Blumlein line for the pulsed forming line of intense electron-beam accelerators

  • J.L. Liu (a1) (a2), X.B. Cheng (a1), B.L. Qian (a1), B. Ge (a1), J.D. Zhang (a1) and X.X. Wang (a2)...


The pulse forming line (PFL) is the key part of the intense electron-beam accelerators (IEBA), which determines the quality and characteristic of the output beam current of the IEBA. Compared with the accelerator with traditional Blumlein line, an IEBA based on strip spiral Blumlein line (SSBL) can increase the duration of the output pulse in the same geometrical dimension. But the disadvantage of the SSBL is that the output voltage waveform at the matched load may be distorted, which influences the electron beam quality. In this paper, according to the electromagnetic theory, formulas for calculating the main electric parameters of SSBL (inductance, capacitance, transmission time, and characteristic impedance) are deduced. The effect of the geometric parameters of SSBL on the slowing coefficient is analyzed. The designed condition of SSBL for the output ideal voltage pulse in the matched load is obtained by theoretical analysis. Furthermore, the Karat code is used to simulate the output voltage waveform of SSBL on the matched load for different spiral angels. At last, a couple of contrastive experiments are performed on an electron-beam accelerator based on the SSBL with water dielectric. The experimental results agree with the theoretical and simulated results.


Corresponding author

Address correspondence and reprint requests to: Jinliang Liu, College of Photoelectical Engineering and Science, National University of Defense Technology, Changsha, 410073, China. E-mail:


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Chen, C., Liu, G. & Huang, W. (2002). A repetitive X-band relativistic backward-wave oscillator. IEEE Trans. Plasma Sci. 30, 11081111.
Chen, Z.L., Unick, C., Vafaei-Najafabadi, N., Tsui, Y.Y., Fedosejevs, R., Naseri, N., Masson-Laborde, P.E. & Rozmus, W. (2008). Quasi-monoenergetic electron beams generated from 7 TW laser pulses in N-2 and He gas targets. Laser Part. Beams 26, 147155.
Coogan, J.J., Davanloo, F. & Collins, C.B. (1990). Production of high-energy photons from flash x-Ray sources powered by stacked Blumlein generators. Rev. Sci. Intrum. 61, 14481456.
Friedman, S., Limpaecher, R. & Sirchis, M. (1988). Compact Energy Storage using a Modified-Spiral PFL. Everett, MA: Avco Research Laboratory, Inc.
Hoffmann, D.H.H., Blazevic, A., Ni, P., Rosmej, O., Roth, M., Tahir, N.A., Tauschwitz, A., Udrea, S., Varentsov, D., Weyrich, K. & Maron, Y. (2005). Present and future perspectives for high energy density physics with intense heavy ion and laser beams', Laser Part. Beams 23, 4753.
Korovin, S.D., Gubanov, V.P., Gunin, A.V., Pegel, I.V. & Stepchenko, A.S., (2001). Repetive nanosenond high-voltage generator based on spiral forming line. The 28th IEEE International Conference on Plasma Science. 12491251.
Korovin, S.D., Kurkan, I.K., Logino, S.V., Pegel, I.V., Polevin, S.D., Volkov, S.N. & Zherlitsyn, A.A. (2003). Decimeter-band frequency-tunable sources of high-power microwave pulses. Laser Part. Beams 21, 175185.
Kulagin, V.V., Cherepenin, V.A., Hur, M.S., Lee, J. & Suk, H. (2008). Evolution of a high-density electron beam in the field of a super-intense laser pulse. Laser Part. Beams 26, 397409.
Lancaster, K.T., Clark, R.S. & Buttram, M.T. (1988). A compact, repetitive, 6.5 kilojoule Marx generator. Power Modulator Symposium. Sandia Nat. Lab. 1988, 4851.
Li, G.L., Yuan, C.W., Zhang, J.Y., Shu, T. & Zhang, J. (2008). A diplexer for gigawatt class high power microwaves. Laser Part. Beams 26, 371377.
Liu, J.L., Zhan, T.W., Zhang, J., Liu, Z.X., Feng, J.H., Shu, T., Zhang, J.D. & Wang, X.X. (2007). A Tesla pulse transformer for spiral water pulse forming line charging, Laser Part. Beams 25, 305312.
Liu, Jl., Yin, Y., Ge, B., Zhan, T.W., Cheng, X.B., Feng, J.H., Shu, T., Zhang, J.D. & Wang, X.X. (2007). An electron-beam accelerator based on spiral water PFL. Laser Part. Beams 25, 593599.
Liu, J.L., Li, C.L., Zhang, J.D., Li, S. & Wang, X.X. (2006). A spiral strip transformer type electron-beam accelerator, Laser Part. Beams 24, 355358.
Pai, S.T. & Zhang, Q. (1995). Introduction to High power Pulse Technology. Singapore: World Scientific Publishing.
Shenggang, L. (1985). Introduction to Microwave Electronics. Beijing: National Defense Industry Press.
Tarasenko, V.F., Shunailov, S.A., Shpak, V.G. & Kostyrya, I.D. (2005). Super short electron beam from air filled diode at atmospheric pressure. Laser Part. Beams 23, 545551.
Verson, L. & Brion, J.-C. (2003). Experimental Study of Repetitive Marx Generator [A]. Pulsed Power Conference, Digest of Technical Papers. PPC-2003 2, 10541057.
Yatsui, K., Shimiya, K., Masugata, K., Shigeta, M. & Shibata, K. (2005). Characteristics of pulsed power generator by versatile inductive voltage adder. Laser Part. Beams 23, 573581.
Zhang, Y.M., Tang, J.P., Huang, J.J., Qu, A.C., Guan, Z.C. & Wang, X.X. (2008). The application of flash-over switch in high energy fluence diode. Laser Part. Beams 26, 213216.



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