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| WEPKF080 |
Secondary Electron Yield Measurements from Thin Surface Coatings for NLC Electron Cloud Reduction
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1789 |
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- F. Le Pimpec, F. King, R.E. Kirby, M.T.F. Pivi
SLAC, Menlo Park, California
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In the beam pipe of the positron damping ring of the Next Linear Collider, electrons will be created by beam interaction with the surrounding vacuum chamber wall and give rise to an electron cloud. Several solutions are possible for avoiding the electron cloud, without changing the beam bunch structure or the diameter of the vacuum chamber. Some of the currently available solutions include reducing residual gas ionization by the beam, minimizing photon-induced electron production, and lowering the secondary electron yield (SEY) of the chamber wall. We will report on recent SEY measurements performed at SLAC on TiN coatings and TiZrV non-evaporable getter thin films.
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