{"title":"The vacuum flashover of Dow-Corning type 704 diffusion-pump oil","authors":"G. Huttlin, A. Lelis, A. G. Stewart","doi":"10.1109/EIC.1982.7464445","DOIUrl":null,"url":null,"abstract":"Surface flashover characteristics of Dow-Corning type 704 diffusion-pump oil (DC-704) were measured to determine the suitability of this fluid as a vacuum barrier in pulse-power accelerators. These experiments were conducted on an Ion Physics Corporation FX-45 pulse generator, which provided 28-ns (FWHM) pulses in the 500- to 1000-kV range. These pulses went to either a resistive load or a field-emission diode via a vacuum-insulated coaxial transmission line partially filled with the oil. To date, almost 400 pulses have been fired and fields over 200-kV/cm have been sustained. For instances where the oil surface did flash over, open-shutter photographs recorded the spark channels. Since their probability did not show a strong field dependence, we believe that flashovers at these levels were due to spurious phenomena.","PeriodicalId":422317,"journal":{"name":"1982 IEEE International Conference on Electrical Insulation","volume":"264 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1982-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"1982 IEEE International Conference on Electrical Insulation","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/EIC.1982.7464445","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
Surface flashover characteristics of Dow-Corning type 704 diffusion-pump oil (DC-704) were measured to determine the suitability of this fluid as a vacuum barrier in pulse-power accelerators. These experiments were conducted on an Ion Physics Corporation FX-45 pulse generator, which provided 28-ns (FWHM) pulses in the 500- to 1000-kV range. These pulses went to either a resistive load or a field-emission diode via a vacuum-insulated coaxial transmission line partially filled with the oil. To date, almost 400 pulses have been fired and fields over 200-kV/cm have been sustained. For instances where the oil surface did flash over, open-shutter photographs recorded the spark channels. Since their probability did not show a strong field dependence, we believe that flashovers at these levels were due to spurious phenomena.
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