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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Lamba, O.S. Kaushik, M.M. Kumar, S. Jindal, V. Singh, V. Ratan, M.S. Pal, D. Kant, D. Joshi, L.M. |
| Copyright Year | 2010 |
| Description | Author affiliation: Microwave Tubes Area, Central Electronics Engineering Research Institute Pilani (Rajasthan):333031, (Council of Scientific and Industrial Research, New Delhi), India (Lamba, O.S.; Kaushik, M.M.; Kumar, S.; Jindal, V.; Singh, V.; Ratan, M.S.; Pal, D.; Kant, D.; Joshi, L.M.) |
| Abstract | The paper presents the design fabrication and cold testing of vacuum RF window for C-band 250 kW CW power klystron. The electromagnetic simulation of the window has been carried out using the CST microwave studio software. The proposed window is designed for 5 GHz operating frequency for handling 250 kW of RF power. In the proposed window geometry, metallized alumina disc (99.5 % purity) of diameter 56 mm and thickness 1.5 mm is brazed in a cylindrical waveguide of diameter 56 mm. The cylindrical waveguide is terminated to WR 187 waveguide at its both ends. The return loss and insertion loss of the above mentioned window has been found to be −48 dB and 0.05 dB respectively which are well matched with experimental values. The bandwidth of 170 MHz was achieved. The thermal analysis is carried out using ANSYS code. Different temperature profiles are obtained for different values of dielectric loss. The temperature range on the alumina disc surface is found to be 33.7°C – 92.9°C for the dielectric loss of 30.95 watts in the window disc material. Cooling channel designed around the window outside surface for proper cooling of the window by flowing coolant in it. The coolant flow rate changed from 5 to 15 L/min to check the cooling effect with variation of flow rate and found that 5 L/min. flow rate is effective for the structure for cooling the required power dissipation. The window performance has been found satisfactory for microwave transmission. |
| Starting Page | 125 |
| Ending Page | 126 |
| File Size | 476916 |
| Page Count | 2 |
| File Format | |
| ISBN | 9781424470983 |
| e-ISBN | 9781424470990 |
| DOI | 10.1109/IVELEC.2010.5503572 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-05-18 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Testing Radio frequency Klystrons Dielectric losses Cooling Electromagnetic waveguides Insertion loss Coolants Fabrication Geometry S -parameters RF Window Klystron pill-box type alumina |
| Content Type | Text |
| Resource Type | Article |
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