Secondary Electron Emission Measurements for TiN Coating on the Stainless Steel of SNS Accumulator Ring Vacuum Chamber | Zendy

Pengfei He | Zendy

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Secondary Electron Emission Measurements for TiN Coating on the Stainless Steel of SNS Accumulator Ring Vacuum Chamber

Author(s) -

Pengfei He

Publication year - 2004

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/827344

Subject(s) - tin , coating , materials science , spallation neutron source , accumulator (cryptography) , spallation , titanium nitride , secondary electrons , electron , titanium , storage ring , vacuum chamber , metallurgy , nitride , neutron , nuclear physics , physics , composite material , layer (electronics) , optics , beam (structure) , algorithm , computer science

BNL is responsible for the design and construction of the US Spallation Neutron Source (SNS) accumulator ring. Titanium Nitride (TiN) coating on the stainless steel vacuum chamber of the SNS accumulator ring is needed to reduce the secondary electron yield (SEY) and the undesirable resonant multiplication of electrons. The total SEY of TiN coated stainless steel material has been measured after coating samples were exposed to air and after electron and ion bombardment. We report here about TiN coating system setup at BNL and SEY measurements results at CERN, SLAC and KEK. We also present some simulation results of SNS accumulator ring electron-cloud effects using different SEY values.

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