F. Gerigk, S. Ramberger, R. Wegner, P. Ugena-Tirado

CCDTL (F. Gerigk) yesterday was a video conference with BINP on the construction of the CCDTL support, at CERN it was concluded that we need a bronze layer between cavity support pads and the frame to allow longitudinal movement (50 deg temp difference between support and cavities cause 0.5 mm long. movement of the outer cavities), BINP has already foreseen a stress relief treatment (heat treatment) to achieve the required tolerances, vertically the cavities will most likely be shimmed, because simulations on the deformation of the support showed maximum values of 0.2 - 0.3 mm (for extreme cases, which are unlikely to happen in reality), CERN workshop is in the process of making a cost estimate for comparison with BINP price,

Windows (F. Gerigk) revised price expected from Thales next week

India (F. Gerigk) ongoing discussions on welding procedures

PIMS (R. Wegner, F. Gerigk) In a meeting with the CERN workshop it was decided that the short module made of 2 cells (2 end discs - module N, 2 rings module G and 1 disc module G) would be sufficient to qualify the production process of discs and rings for the PIMS series production. Only the waveguide ring needs to be qualified separately. analysis results of the 2nd welding test in Juelich arrived, 2 linear pieces are welded together, the photos look promising (https://twiki.cern.ch/twiki/pub/SPL/Minutes06May2011/Juelich_Linearer_Test.pdf), circular samples will be welded soon IPJ replied that they can machine precision holes for the alignment arms into the discs which simplifies the arm design.

-- RolfWegner - 06-May-2011

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PDFpdf Juelich_Linearer_Test.pdf r1 manage 2235.2 K 2011-05-06 - 15:32 RolfWegner 2nd welding test Juelich, linear weld
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