first feedthrough installed
December 2002

The first feedthrough (FT26) was welded on the cryostat (ECC) Thursday December 5th 2002 at CERN in building 180. Here are some pictures from Fiona and Paul (the first four), and from Aboud Falou (Orsay) (the last three). Congratulations to all!!

Words of wisdom from Aboud:
"The first signal feed through has been welded successfully today on the end cap cryostat C. The He leak test is better then 2.510-9 mbar.l/s. The integration work as well as the welding work have been done according to the specifications. The vertical axis of the cryostat gives safe and comfortable access"

Words of wisdom from Paul:
"The first endcap signal feedthrough has been successfully installed, welded, and leak checked today. A second feedthrough has been cut in preparation for installation next week."

Words of wisdom from Fiona:
"This morning FT26 was welded. The weld was then inspected and it passed. Our first FT has been installed with just a few glitches but there is no time for champagne around here. This afternoon Aboud has had the funnel cut off FT19 and its super insulation will be put on tomorrow (after working out the super insulation procedure).
Pof is writing up a procedure to make further FT installs a little smoother running and Aboud will go through it to make sure nothing is missing."


feedthrough mounted on cryostat

feedthrough with orbital welder

feedthrough being welded

feedthrough welded!

feedthrough welded!

feedthrough weld leak test

close-up on weld