Hostname: page-component-8448b6f56d-qsmjn Total loading time: 0 Render date: 2024-04-20T14:34:27.677Z Has data issue: false hasContentIssue false
  • English
  • Français

A Ku-band coaxial relativistic transit-time oscillator with low guiding magnetic field

Published online by Cambridge University Press:  28 March 2014

Jun-Pu Ling ,
Jun-Tao He ,
Jian-De Zhang ,
Tao Jiang  and
Li-Li Song
Jun-Pu Ling
Affiliation:
College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha, Hunan, Peoples Republic of China
Jun-Tao He*
Affiliation:
College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha, Hunan, Peoples Republic of China
Jian-De Zhang
Affiliation:
College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha, Hunan, Peoples Republic of China
Tao Jiang
Affiliation:
College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha, Hunan, Peoples Republic of China
Li-Li Song
Affiliation:
College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha, Hunan, Peoples Republic of China
*
Address correspondence and reprint requests to: Jun-Tao He, College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha, Hunan, Peoples Republic of China410073. E-mail: hejuntao12@163.com
Get access Rights & Permissions [Opens in a new window]

Abstract

A novel coaxial relativistic transit-time oscillator with low guiding magnetic field is proposed and investigated to generate high power microwave at Ku-band. With the coaxial structure and a quasi body wave adopted as the operating mode, the device has a larger space-charge limiting current, higher power handling capacity, and lower guiding magnetic field. Moreover, for further improving the output power, a coaxial TM02 mode resonant reflector is well designed. Main structure parameters of the device are optimized by particle in cell simulations. A typical simulation result is that, with a 358 keV, 7.25 kA beam guided by a magnetic field of about 0.7 T, an 810 MW microwave pulse at 14.25 GHz is generated, yielding a conversion efficiency of about 31%. The primary experiments are also carried out. At a low guiding magnetic field of 0.7 T, a microwave pulse with power of 400 MW, pulse duration of 30 ns, frequency of 14.3 GHz close to the simulation one, and efficiency of 15.4% is generated.

Keywords

Coaxial structureHigh power microwaveKu-bandLow guiding magnetic fieldTransit-time oscillator
Type
Research Article
Information
Laser and Particle Beams , Volume 32 , Issue 2 , June 2014 , pp. 295 - 303
Copyright
Copyright © Cambridge University Press 2014 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Barroso, J.J. (2000). Design facts in the Axial monotone. IEEE Trans. on Plasma Sci. 28, 652–656.Google Scholar
Barroso, J.J. & Kostov, K.G. (2002). Triple-Beam Monotron. IEEE Trans. Plasma Sci. 30, 1169–1175.Google Scholar
Benford, J., Swegle, J. & Schamilogu, E. (2007). High Power Microwaves. New York: Taylor & Francis Ltd.Google Scholar
Cao, Y.B., Zhang, J.D. & He, J.T. (2009). A low-impedance transit-time oscillator without foils. Phys. Plasmas 16, 083102.CrossRefGoogle Scholar
CAO, Y.B., He, J.T., Zhang, J.D. & Ling, J.P. (2012 a). Experimental verification of a low-impedance transit-time oscillator without foils. Laser Part. Beams 30, 613–619.CrossRefGoogle Scholar
Cao, Y.B., He, J.T., Zhang, J.D., Zhang, J. & Jin, Z.X. (2012b). An oversized X-band transit radiation oscillator. Appl. Phys. Lett. 101, 173504.Google Scholar
Cheng, X.B., Liu, J.L., Qian, B.L. & Zhang, J.D. (2009). Effect of transition section between the main switch and middle cylinder of Blumlein pulse forming line on the diode voltage of intense electron-beam accelerators. Laser Part. Beams 27, 239–447.Google Scholar
Cheng, X.B., Liu, J.L., Zhang, H.B., Hong, Z.Q. & Qian, B.L. (2012a). Output voltage waveform analysis of an intense electron beam accelerator based on strip spiral Blumlein line. Laser Part. Beams 30, 379–385.Google Scholar
Cheng, X.B., Liu, J.L., Hong, Z.Q. & Qian, B.L. (2012 b). Operating characteristics of intense electron beam accelerator at different load conditions. Laser Part. Beams 30, 531–539.Google Scholar
Cheng, X.B., Liu, J.L. & Qian, B.L. (2013). Application of high speed frame camera on the intense electron beam accelerator: An overview. Laser Part. Beams 31, 643–652.Google Scholar
Eltchaninov, A.A., Korovin, S.D., Rostov, V.V., Pegel, I.V., Mesyats, G.A., Rukin, S.N., Shpak, V.G.Yalandin, M.I. & Ginzburg, N.S. (2003). Production of short microwave pulses with a peak power exceeding the driving electron beam power. Laser Part. Beams 21, 187–196.Google Scholar
Gao, L., Qian, B.L., Ge, X.J., Zhang, X.P. & Jin, Z.X. (2012). Experimental study of a compact P-band coaxial relativistic backward wave oscillator with three periods slow wave structure. Phys. Plasmas 19, 083113.Google Scholar
Ge, X.J., Zhong, H.H., Qian, B.L., Zhang, J., Gao, L., Jin, Z.X., Fan, Y.W. & Yang, J.H. (2010). An L-band coaxial relativistic backward wave oscillator with mechanical frequency tunability. Appl. Phys. Lett. 97, 101503.Google Scholar
He, J.T., Cao, Y.B., Zhang, J.D., Wang, T. & Ling, J.P. (2011). Design of a dual-frequency high-power microwave generator. Laser Part. Beams 29, 479–485.Google Scholar
Jin, Z.X., Zhang, J., Yang, J.H., Zhong, H.H., Qian, B.L., Shu, T., Zhang, J.D., Zhou, S.Y. & Xu, L.R. (2011). A repetitive S-band long-pulse relativistic backward-wave oscillator. Rev. Sci. Instrum. 82, 084704.CrossRefGoogle ScholarPubMed
Kuai, B., Wu, G., Qiu, A., Wang, L., Cong, P. & Wang, X. (2009). Soft X-ray emissions from neon gas-puff Z-pinch powered by Qiang Guang-I accelerator. Laser Part. Beams 27, 569–577.Google Scholar
Leifeste, G.T., Eaeley, L.M., Swegle, J.A., Poukey, J.W., Miller, R.B., Crist, C.E., Wharton, C.B. & Ballard, W.P. (1986). Kuband radiation produced by a relativistic backward wave oscillator. J. Appl. Phys. 59, 1366.Google Scholar
Li, G.L., Shu, T., Yuan, C.W., Zhu, J., Liu, J., Wang, B. & Zhang, J. (2010). Simultaneous operation of X band gigawatt level high power microwaves. Laser Part. Beams 28, 35–44.Google Scholar
Liu, J.L., Li, C.L., Zhang, J.D., Li, S.Z. & Wang, X.X. (2006). A spiral strip transformer type electron-beam accelerator. Laser Part. Beams 24, 355–358.Google Scholar
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, 305–312.Google Scholar
Liu, J.L., Cheng, X.B., Qian, B.L., Ge, B., Zhang, J.D. & Wang, X.X. (2009). Study on strip spiral Blumlein line for the pulsed forming line of intense electron-beam accelerators. Laser Part. Beams 27, 95–102.Google Scholar
Marder, B.M., Clark, M.C., Bacon, L.D., Hoffman, J.M., Lemke, R.W. & Coleman, P.D. (1992). The split-cavity oscillator: A high-power e-beam modulator and microwave source. IEEE Trans. Plasma Sci. 20, 312–331.CrossRefGoogle Scholar
Tang, Y.F., Meng, L., Li, H.L., Zheng, L., Wang, B. & Zhang, F.N. (2013). Design of a high-efficiency dual-band coaxial relativistic backward wave oscillator with variable coupling impedance and phase velocity. Laser Part. Beams 31, 55–62.CrossRefGoogle Scholar
Teng, Y., Liu, G.Z., Shao, H. & Tang, C.X. (2009). A New Reflector Designed for Efficiency Enhancement of CRBWO. IEEE Trans. Plasma Sci. 37, 1062–1068.Google Scholar
User's Manual of Code Chipic. (2004). Chengdu: University of Electronic Science and Technology of China Chengdu.Google Scholar
Vlasov, A.N., Ilyin, A.S. & Carmel, Y. (1998). Cyclotron effects in RBWOs operating at low magnetic fields. IEEE Trans. Plasma Sci. 26, 605–614.CrossRefGoogle Scholar
Xiao, R.Z., Zhang, X.W., Zhang, L.J., Li, X.Z., Zhang, L.G., Song, W., Hu, Y.M., Sun, J., Huo, S.F., Chen, C.H., Zhang, Q.Y. & Liu, G.Z. (2010). Efficient generation of multi-gigawatt power by a klystron-like relativistic backward wave oscillator. Laser Part. Beams 28, 505–511.Google Scholar
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, 573–581.Google Scholar
Zhang, J., Zhong, H.H. & Luo, L. (2004). A Novel Overmoded Slow-Wave High-Power Microwave (HPM) Generator. IEEE Trans. Plasma Sci. 32, 2236–2242.Google Scholar
Zhang, K.Q. & Li, D.J. (2001). Electromagnetic Theory for Microwaves and Optoelectronics. Beijing: Publishing House Electron. Ind.Google Scholar
Zhang, Q., Yuan, C.W. & Liu, L. (2010). Design of a dual-band power combining architecture for high-power microwave applications. Laser Part. Beams 28, 377–385.Google Scholar
Zhou, J., Liu, D.G., Liao, C. & Li, Z.H. (2009). An efficient code for electromagnetic PIC modeling and simulation. IEEE Trans. Plasma Sci. 37, 2002–2011.Google Scholar
Zhu, J., Shu, T., Zhang, J., Li, G.L. & Zhang, Z.H. (2010). A high power Ka band millimeter wave generator with low guiding magnetic field. Phys. Plasmas 17, 083104.Google Scholar
Zou, X.B., Liu, R., Zeng, N.G., Han, M., Yuan, J.Q., Wang, X.X. & Zhang, G.X. (2006). A pulsed power generator for x-pinch experiments. Laser Part. Beams 24, 503–509.CrossRefGoogle Scholar