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Optimization of ILC Cryomodule Design Using Explosion Welding Technology

Basti, Andrea (Pisa U.) ; Bedeschi, Franco (INFN, Pisa) ; Boudagov, Julian (Dubna, JINR) ; Bryzgalin, Andrey (Unlisted, UA) ; Dobrushin, Leonid (Unlisted, UA) ; Fabbricatore, Pasquale (INFN, Genoa) ; Illarionov, Sergei (Unlisted, UA) ; Pekar, Evgenij (Unlisted, UA) ; Sabirov, Basar (Dubna, JINR) ; Shirkov, Grigori (Dubna, JINR) ; Taran, Yuri (Dubna, JINR)

Year: 2015
Page No: MOPHA052
Pages: 4
Year: 2015-06

Abstract: Optimization of ILC cryomodule design using explosion welding technology. B.Sabirov, J.Budagov, G.Shirkov - JINR, Dubna, Russia A.Basti, F.Bedeschi, P.Fabbricatore - INFN, Pisa/Genova, Italy A.Bryzgalin, L.Dobrushin, S.Illarionov, E.Pekar - EWI, Kiev, Ukraine JINR activity in the ILC Project is the development, in association with INFN, of techniques to simplify and make cheaper the construction of the ILC cryomodules. In the current ILC TDR design both the helium vessel shell and the connected pipes are made of expensive titanium, one of the few metals that can be welded to niobium by the electron beam technique. We describe the construction and performance of transition elements, obtained by explosion welding, that can couple the niobium cavity with a stainless steel helium vessel. Several designs for these transitions have been produced and studied showing varying levels of reliability. Based on this experience a new design, including a minimal titanium intermediate layer, has been built. Preliminary tests yield impressive results, indicating a very strong resistance of the bon

Keyword(s): cryomodule ; niobium ; cavity ; neutron ; cryogenics

Web-Page: http://accelconf.web.cern.ch/AccelConf/IPAC2015/papers/mopha052.pdf; http://inspirehep.net/record/1417433/files/mopha052.pdf

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