000928396 001__ 928396
000928396 003__ SzGeCERN
000928396 005__ 20240223163349.0
000928396 041__ $$aeng
000928396 100__ $$aHseuh Hsiao Chaun
000928396 245__ $$aPhysical and Electromagnetic Properties of Customized Coatings for SNS Injection Ceramic Chambers and Extraction Ferrite Kickers
000928396 260__ $$c2005
000928396 520__ $$aThe inner surfaces of the 248 m SNS accumulator ring vacuum chambers are coated with ~100 nm of titanium nitride (TiN) to reduce the secondary electron yield (SEY) of the chamber walls. All the ring inner surfaces are made of stainless or inconel, except those of the injection and extraction kickers. Ceramic vacuum chambers are used for the 8 injection kickers to avoid shielding of a fast-changing kicker field and to reduce eddy current heating. The internal diameter was coated with Cu to reduce the beam coupling impedance and provide passage for beam image current, and a TiN overlayer to reduce SEY. The ferrite surfaces of the 14 extraction kicker modules were coated with TiN to reduce SEY. Customized masks were used to produce coating strips of 1 cm x 5 cm with 1 to 1.5 mm separation among the strips. The masks maximized the coated area to more than 80%, while minimizing the eddy current effect to the kicker rise time. The coating method, as well as the physical and electromagnetic properties of the coatings for both types of kickers will be summarized, with emphasis on the effect to the beam and the electron cloud buildup.
000928396 595__ $$aSIS PAC05-2006
000928396 65017 $$2SzGeCERN$$aAccelerators and Storage Rings
000928396 690C_ $$aARTICLE
000928396 700__ $$aBlaskiewicz, Michael
000928396 700__ $$aHe, Ping
000928396 700__ $$aHenderson, Stuart
000928396 700__ $$aPai, Chien
000928396 700__ $$aRaparia, Deepak
000928396 700__ $$aTodd, Robert J
000928396 700__ $$aWang, Lanfa
000928396 700__ $$aWei, Jie
000928396 700__ $$aWeiss, Daniel
000928396 700__ $$aYung Lee, Yong
000928396 8564_ $$uhttps://accelconf.web.cern.ch/p05/PAPERS/RPPE048.PDF$$yPublished version from JACoW
000928396 901__ $$uBNL, Upton, Long Island, New York
000928396 901__ $$uORNL/SNS, Oak Ridge, Tennessee
000928396 916__ $$sn$$w200606
000928396 960__ $$a13
000928396 961__ $$c20070116$$h1516$$lCER01$$x20060208
000928396 963__ $$aPUBLIC
000928396 962__ $$b719664$$k3028$$nknoxville20050516
000928396 970__ $$a002596243CER
000928396 980__ $$aARTICLE