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Title HALF-CELL DIE DESIGNE FOR RIGHT CAVITY GEOMETRY  IN HIGH INSITY SC PROTON LINAC
Type Poster cavity design / fabrication / treatment
Abstract Today, application of sc RF cavities to proton LINAC is conducted very intensively like SNS project in USA.KEK is also making a collaborative work for the future ADS at 972MHz. In proton sc LINAC, phase control is much severe due to the heavy proton mass. As a result, cavity fabrication tolerance becomes severe comparing with electron sc RF applications. To date, deep drawing forms half cups of sc cavity. This severe fabrication tolerance affects the design of dies. Generally cell cups deform due to the spring-back after detaching it from the die. We designed a die considering about the spring-back effect by mechanical structure analysis and formed half cups using the die. As a result, we made a die successfully with a forming error less than 0.3mm with half cups. In this paper, the results are presented.

List of authors...

Principle author first.

Last (Family) Name First Name (Initials only) Affiliation or Organization (abbreviations if possible)
Saito K KEK
Noguchi S KEK
Ohota T MHI



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