May 29, 2017 to June 2, 2017
Intercontinental Hotel
Europe/Zurich timezone
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Advancements in low secondary electron yield carbon coatings for electron cloud mitigation

Not scheduled
Intercontinental Hotel

Intercontinental Hotel

Budapester Str. 2, 10787 Berlin, Germany
Board: 2TUP50


Michael Vogel (University Siegen)


We report on the progress of carbon coating for multipacting mitigation on SRF-Guns. The findings comprise valuable information for e.g. high-energy charged particle accelerators where the beam-induced electron multiplication leads to electron cloud build up on the beam path. Reports have shown secondary electron yields (SEY or δ) of carbon coatings of less than 1 which is sufficient for most of the applications. Here we show carbon coatings displaying different morphologies leading to SEYs of 0.6 < δ ≤ 1. One of the vital requirements in accelerator systems is the elimination of possible contamination by delamination of the coating. To investigate the adhesion scratch tests have been carried out and a method to significantly improve the adhesion of carbon coatings on metal surfaces by a titanium interlayer is shown.

Primary author

Michael Vogel (University Siegen)


Danica Frettloeh (Siegen University) Xin Jiang (Siegen University)

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