Heat treatment up to 1500 degrees C in an ultrahigh-vacuum furnace, along with processing of cavities and temperature mapping was used to suppress field emission and analyze emitter properties. In 27 tests of one-cell 1500-MHz fired accelerating cavities, on the average the accelerating field, E/sub acc/, increased to 24 MV/m (H/sub pk/=1250 Oe) from 13 MV/m with chemical treatment alone; the highest E/sub acc/ reached was 30.5 MV/m. Emitter properties, efficiency of He processing, and results of the exposure of well-processed RF surfaces to various media are also discussed.
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机译：在超高真空炉中进行最高1500摄氏度的热处理以及腔体的处理和温度映射，可以抑制场发射并分析发射器特性。在27个单电池1500 MHz发射加速腔的测试中，平均加速场E / sub acc /从化学试剂的13 MV / m提高到24 MV / m（H / sub pk / = 1250 Oe）。单独治疗； E / sub acc /达到的最高值为30.5 MV / m。还讨论了发射器特性，He处理效率以及经过良好处理的RF表面暴露于各种介质的结果。
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