Author: Renaglia, T.
Paper Title Page
MOPC053 Mechanical Design and Fabrication Studies for SPL Superconducting RF Cavities 199
 
  • S. Atieh, G. Arnau-Izquierdo, I. Aviles Santillana, O. Capatina, T. Renaglia, T. Tardy, N. Valverde Alonso, W. Weingarten
    CERN, Geneva, Switzerland
  
  CERN’s R&D pro­gramme on the Su­per­con­duct­ing Pro­ton Linac’s (SPL) su­per­con­duct­ing radio fre­quen­cy (SRF) el­lip­ti­cal cav­i­ties made from nio­bi­um sheets ex­plores new me­chan­i­cal de­sign and con­se­quent­ly new fab­ri­ca­tion meth­ods, where sev­er­al op­por­tu­ni­ties for im­proved op­ti­miza­tion were iden­ti­fied. A stain­less steel he­li­um ves­sel is under de­sign rather than a ti­ta­ni­um he­li­um ves­sel using an in­te­grat­ed brazed tran­si­tion be­tween Nb and the SS he­li­um ves­sel. Dif­fer­ent de­sign and fab­ri­ca­tion as­pects were pro­posed and the re­sults are dis­cussed here­after.  
 
MOPC103 Cryostat for Testing HIE-ISOLDE Superconducting RF Cavities 313
 
  • O. Capatina, J.P. Brachet, G. Cuccuru, M. Pasini, T. Renaglia, M. Therasse, B. Vullierme
    CERN, Geneva, Switzerland
  
  The High In­ten­si­ty and En­er­gy ISOL­DE (HIE-ISOL­DE) pro­ject is a major up­grade of the ex­ist­ing ISOL­DE and REX-ISOL­DE fa­cil­i­ties at CERN [1], with the ob­jec­tive of in­creas­ing the en­er­gy and the in­ten­si­ty of the de­liv­ered ra­dioac­tive ion beams (RIB). This pro­ject aims to fill the re­quest for a more en­er­get­ic post ac­cel­er­at­ed beam by means of a new su­per­con­duct­ing (SC) linac based on Quar­ter Wave Res­onators (QWRs). A re­search and de­vel­op­ment pro­gram look­ing at all dif­fer­ent as­pects of the SC linac has start­ed in 2008 and con­tin­ued through­out 2010. In par­tic­u­lar the R&D ef­fort has fo­cused on the de­vel­op­ment of the high β cav­i­ty (β = 10.3%), for which it has been de­cid­ed to adopt the Nb sput­tered on Cu sub­strate tech­nol­o­gy. Two pro­to­type cav­i­ties were man­u­fac­tured and are un­der­go­ing RF cold tests. The pre-se­ries cav­i­ty fab­ri­ca­tion is under way using 3D forged Cu bil­lets. A sin­gle vac­u­um cryo­stat was de­signed and built to test these cav­i­ties at liq­uid he­li­um tem­per­a­tures. The paper de­tails the main de­sign con­cepts of the test cryo­stat as well as the re­sults of the cryo­genic be­hav­ior of the com­plete set-up in­clud­ing the cryo­stat, the RF cav­i­ty, the tuner and the main cou­pler.