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Title |
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| THPB097 |
New Possible Configuration of 3.9 GHz Coupler |
Windows, simulation, cavity, electron |
1373 |
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- S. Kazakov
Fermilab, Batavia, Illinois, USA
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The LCLS-II superconducting accelerator supposedly will use 3.9 GHz (3-d harmonic) superconductive cavities. A new possible configuration of 3.9 GHz main coupler is presented in the papar. This configuration contains two coaxial ceramic windows, a cold and a warm one. Inner conductors of windows are connected through the capacitive gap and have no mechanical no thermal contacts. It allows to avoid using bellows and thus avoid the problem of heating and cooling. The windows have shields protecting shields against the electron, and this prevents the window ceramics from charging. Results of computer simulation of the new coupler are posted.
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Poster THPB097 [1.036 MB]
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| THPB098 |
Testing of 325 MHz Couplers at Test Stand in Resonance Mode |
cavity, resonance, rf-amplifier, monitoring |
1376 |
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- S. Kazakov, B.M. Hanna, O.V. Pronitchev
Fermilab, Batavia, Illinois, USA
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The linear accelerator for the PIP-II program utilizes two types of 325 MHz Single Spoke resonator cavities: SSR-I and SSR-II. Operating power of SSR-II is about 17 kW and requires input couplers which can reliably work at power levels > 20 kW with full reflection at any reflected phase. Currently only one 10 kW RF amp is available for coupler testing. To increase testing power, a special resonance configuration were used. This configuration allows us to raise RF power approximately 3 times. The testing scheme and results are discussed in the paper.
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Poster THPB098 [1.600 MB]
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