Get a grip: Robotics firms struggle to develop hands
Instead of a continuous stream, the electron beam is divided into nanosecond-long bunches—billions of electrons riding the radio-frequency field like surfers. Inside the accelerator’s cavities, the field flips polarity 12 billion times per second, so timing is everything: Only electrons that arrive perfectly in phase with the accelerating wave will gain energy. That process repeats through a chain of cavities, each giving the bunches another push, until the beam reaches its final energy of 200 MeV.。业内人士推荐在電腦瀏覽器中掃碼登入 WhatsApp，免安裝即可收發訊息作为进阶阅读
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