Accuracy of the equivalent circuit model using a fixed beamimpedance for klystron gain cavities |
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Authors: | Carlsten B.E. Ferguson P. Sprehn D. |
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Affiliation: | Los Alamos Nat. Lab., NM; |
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Abstract: | Most small-signal calculations of the modulation in a klystron's gain cavity use an equivalent circuit which includes a fixed beam impedance. Comparing this calculation to the gain calculated self-consistently, we note there are appreciable errors in both the calculated amplitude and phase of the cavity's modulation. These errors may lead to large accumulated errors in determining either the tube's small-signal or large-signal gain. Both techniques are used in a comparison with an existing S-band klystron |
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