Description
Chairman: Karl BANE (SLAC)
Dr
Roberto Cimino
(LNF-INFN)
16/01/2014, 16:40
Electron cloud is an ubiquitous effect in positively charted particle accelerators and has been observed to induce unwanted detrimental effects on beam quality, stability, vacuum etc. In this presentation a short review of the present understanding of the mitigation strategies adopted so far will be given with particular emphasis to the ongoing research on new materials and material coatings...
Giovanni Iadarola
(CERN - University of Naples Federico II)
16/01/2014, 17:00
The formation of an Electron Cloud (EC) in the vacuum chambers could significantly limit the performances of the positron damping ring of the Compact Linear Collider (CLIC). Depending on the Secondary Electron Yield (SEY) of the inner surface of the vacuum chambers, electrons generated by photoemission due to synchrotron radiation, can multiply through beam induced multipacting and accumulate...
Ryutaro Nagaoka
(Synchrotron SOLEIL)
16/01/2014, 17:40
In this talk we shall review a series of observations, experimental analyses and simulations made at SOLEIL on beam instabilities which are now identified as fast beam-ion instability arising from local outgassing. Peculiarity of these phenomena is that despite being ion instability, uniform beam filling is preferred to avoid the instability. An explanation is given, also suggesting that the...
