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Persistent URL http://purl.org/net/epubs/work/12213180
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Record Id 12213180
Title Further Optimisation of NEG Coatings for Accelerator Beam Chamber
Abstract The non-evaporable getter (NEG) coating, invented at CERN in 90s, is used nowadays in many accelerators around the world. The main advantages of using NEG coatings are evenly distributed pumping speed, low thermal outgassing rates and low photon and electron stimulated gas desorption. The only downside of the NEG is its selective pumping: it pumps H2, CO, CO2 and some other gas species, but does not pump noble gases and hydrocarbons. However, in the accelerators where NEG coating could be beneficial, there is synchrotron radiation and photoelectrons that bombard vacuum chamber walls, it was found in our study that hydrocarbons can be pumped by NEG coating under electron and, most likely, photon bombardment. The detail and the results of this study are reported in this paper.
Organisation ASTeC , ASTeC-AP , STFC
Keywords ASTeC 2014-2015 , 07 Accelerator Technology Main Systems , T14 Vacuum Technology
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Language English (EN)
Type Details URI(s) Local file(s) Year
Paper In Conference Proceedings In 5th International Particle Accelerator Conference (IPAC14), Dresden, Germany, 15-20th June, 2014, (2014). http://jacow.org/…/papers/wepme056.pdf 2014