Abstract
| Original language | English |
|---|---|
| DOIs | |
| Publication status | Published - 2010 |
| Event | 35th International Conference on Infrared, Millimeter and Terahertz Waves - Rome, Italy Duration: 5 Sep 2010 → 10 Sep 2010 |
Conference
| Conference | 35th International Conference on Infrared, Millimeter and Terahertz Waves |
|---|---|
| Country | Italy |
| City | Rome |
| Period | 5/09/10 → 10/09/10 |
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Keywords
- TWT amplifier
- 390 GHz gyrotron
- cusp electron gun
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The design of a 390 GHz gyrotron based on a cusp electron gun. / Li, F.; He, W.; Phelps, A. D. R.; Donaldson, C. R.; Zhang, L.; Cross, A. W.; Ronald, K.
2010. Paper presented at 35th International Conference on Infrared, Millimeter and Terahertz Waves, Rome, Italy.Research output: Contribution to conference › Paper
TY - CONF
T1 - The design of a 390 GHz gyrotron based on a cusp electron gun
AU - Li, F.
AU - He, W.
AU - Phelps, A. D. R.
AU - Donaldson, C. R.
AU - Zhang, L.
AU - Cross, A. W.
AU - Ronald, K.
PY - 2010
Y1 - 2010
N2 - A 390 GHz harmonic gyrotron based on a cusp electron gun was designed to operate on a TE71 mode and the 7(th) cyclotron harmonic of a large orbit electron beam. This beam is produced by a cusp electron gun with a voltage of 40 keV, a current of 1.5 A and an adjustable velocity ratio from 1 to 3. Smooth cylindrical waveguide was studied and built as the interaction cavity. The relationship between the cavity dimensions and cavity Q was optimized for output at the design mode. A simple linear output taper with moderate mode conversion was used in the gyrotron output. Both theoretical analysis and numerical simulation results (using the 3D PIC code MAGIC) of this gyrotron will be presented. When the beam thickness and beam spread were introduced into the simulation, competitive modes were observed in the simulation resulting in a drop in the output power. A high frequency (325-500 GHz) VNA was used to measure the millimeter wave properties of the gyrotron cavity and the results are presented in this paper.
AB - A 390 GHz harmonic gyrotron based on a cusp electron gun was designed to operate on a TE71 mode and the 7(th) cyclotron harmonic of a large orbit electron beam. This beam is produced by a cusp electron gun with a voltage of 40 keV, a current of 1.5 A and an adjustable velocity ratio from 1 to 3. Smooth cylindrical waveguide was studied and built as the interaction cavity. The relationship between the cavity dimensions and cavity Q was optimized for output at the design mode. A simple linear output taper with moderate mode conversion was used in the gyrotron output. Both theoretical analysis and numerical simulation results (using the 3D PIC code MAGIC) of this gyrotron will be presented. When the beam thickness and beam spread were introduced into the simulation, competitive modes were observed in the simulation resulting in a drop in the output power. A high frequency (325-500 GHz) VNA was used to measure the millimeter wave properties of the gyrotron cavity and the results are presented in this paper.
KW - TWT amplifier
KW - 390 GHz gyrotron
KW - cusp electron gun
U2 - 10.1109/ICIMW.2010.5612375
DO - 10.1109/ICIMW.2010.5612375
M3 - Paper
ER -