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SUMMARY:Séminaire Accélérateurs : Materiel Science for next generation 
 Vacuum and accelerateur systems
DTSTART:20121127T100000Z
DTEND:20121127T110000Z
DTSTAMP:20260614T230700Z
UID:indico-event-1949@indico.ijclab.in2p3.fr
DESCRIPTION:Speakers: Roberto Cimino (INFN Frascati)\n\nMost if not all of
  the accelerators now under study like LHC upgrades\, (I)LC Damping Rings\
 , SuperKEKB\, SuperB etc\, are all based on extremely high beam current an
 d ultra-small beam size. Such highly ambitious operating conditions requir
 e extremely high pumping speed in reduced beam pipe openings and in presen
 ce of significant heat loads. Moreover\, accelerators working with positiv
 ely charged beams suffer from unconventional interaction between beam and 
 Vacuum components. Beam instabilities are\, in fact\, predicted (and\, in 
 some cases\, observed) as caused by the presence in vacuum\, of low energy
  electrons Such electrons are known to be produced by photo and/or electro
 n interactions with the accelerator walls. The detailed characterization a
 nd the precise control of surface properties like Secondary Electron Yield
  (SEY)\, Photoemission\, Photoelectron Yield (PY)\, photon Reflectivity (R
 ) are becoming essential ingredients to design and construct a successful 
 accelerator vacuum system. In this talk I will present some of these issue
 s and show how “state of the art” surfaces science techniques seems to
  be very promising to find effective solutions to built vacuum systems mee
 ting the stringent requirements of next generation accelerators.\n\nhttps:
 //indico.ijclab.in2p3.fr/event/1949/
LOCATION:Salle 101 (LAL)
URL:https://indico.ijclab.in2p3.fr/event/1949/
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