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X-ORIGINAL-URL:https://w3.lnf.infn.it
X-WR-CALDESC:Eventi per INFN-LNF
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TZID:Europe/Rome
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TZOFFSETFROM:+0100
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TZNAME:CEST
DTSTART:20160327T010000
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DTSTART:20161030T010000
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BEGIN:VEVENT
DTSTART;TZID=Europe/Rome:20161128T143000
DTEND;TZID=Europe/Rome:20161128T163000
DTSTAMP:20260511T225115
CREATED:20171026T123905Z
LAST-MODIFIED:20171026T123905Z
UID:6996-1480343400-1480350600@w3.lnf.infn.it
SUMMARY:Low secondary emission surfaces for multipactor suppression in space
DESCRIPTION:Multipactor is an undesirable effect produced when high power RF electric fields are used in vacuum. In space\, this effect is very important since affects the wave-guides for communications limiting the power of the transmissions. Any electron present near the electric field is accelerated impinging the wave-guide walls and producing more electrons by secondary emission which are also accelerated. The final result is an electron cloud which can even destroy the wave-guide. In this talk I will first present the main characteristics of the multipactor effect in space\, its relation with secondary emission and how this effect could be mitigated. Then I will present a brief summary of the late anti-multipactor coatings developed in our laboratory during the last years in cooperation with the ESA. Since the problem is still far away from being solved\, I will present new ideas for antimultipactor coatings to be developed under an European ERA.Net Project.
URL:/event/low-secondary-emission-surfaces-for-multipactor-suppression-in-space/
LOCATION:Aula Seminari\, Via Enrico Fermi\, 40\, Frascati\, Roma\, 00044\, Italia
CATEGORIES:Seminari generali
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