Design studies of the Ku-band, wide-band Gyro-TWT amplifier

Autor: Jun Ho So, Kwong Ho Jang, Jin Joo Choi, Yong Jun Hong, Han Seul Lee, Jin Woo Shin, J.H. Won, Sang Wook Jung
Rok vydání: 2014
Předmět:
Zdroj: Journal of the Korean Physical Society. 64:537-542
ISSN: 1976-8524
0374-4884
DOI: 10.3938/jkps.64.537
Popis: This paper reports a Ku-band, wide band Gyrotron-Traveling-wave-tube(Gyro-TWT) that is currently being developed at Kwangwoon University. The Gyro-TWT has a two stage linear tapered interaction circuit to obtain a wide operating bandwidth. The linearly-tapered interaction circuit and nonlinearly-tapered magnetic field gives the Gyro-TWT a wide operating bandwidth. The Gyro-TWT bandwidth is 23%. The 2d-Particle-in-cell(PIC) and MAGIC2d code simulation results are 17.3 dB and 24.34 kW, respectively for the maximum saturated output power. A double anode MIG was simulated with E-Gun code. The results were 0.7 for the transvers to the axial beam velocity ratio (=alpha) and a 2.3% axial velocity spread at 50 kV and 4 A. A magnetic field profile simulation was performed by using the Poisson code to obtain the grazing magnetic field of the entire interaction circuit with Poisson code.
Databáze: OpenAIRE
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