div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: · amplifier and the stage between the second and third cavities acts as a power amplifier The efficiency of the cascade klystron is about the same as the conventional two-cavity src=https:reader031vdocumentsusreader031viewer20220409105e841ad540a2b53ef6242ad0html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: · amplifier and the stage between the second and third cavities acts as a power amplifier The efficiency of the cascade klystron is about the same as the conventional two-cavity src=https:reader031vdocumentsusreader031viewer20220409105e841ad540a2b53ef6242ad0html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 3button div class=ts-image amp-img class=ts-thumb alt=Page 3: · amplifier and the stage between the second and third cavities acts as a power amplifier The efficiency of the cascade klystron is about the same as the conventional two-cavity src=https:reader031vdocumentsusreader031viewer20220409105e841ad540a2b53ef6242ad0html5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdiv