1. P.Freijedo Date: 26.03.2015

2. Click here to add footer 2 C. Parente (HL-LHC Technical Quality Officer) Beam tube for Crab Cavity Beam tube provided by Niovawe

3. Click here to add footer 3 C. Parente (HL-LHC Technical Quality Officer) Tests performed on beam tube: 1.Ultrasonic test by immersion of brazing part: The results are satisfactory 2.Leak Test before and after thermal shocks in liquid nitrogen (five times) : The results are satisfactory Beam tube for Crab Cavity

4. Click here to add footer 4 C. Parente (HL-LHC Technical Quality Officer) 3.Dimensional Control: some dimensions out of tolerance Beam tube for Crab Cavity

5. Click here to add footer 5 C. Parente (HL-LHC Technical Quality Officer) Beam tube for Crab Cavity Dimensional Control Report: https://edms.cern.ch/document/1497271/1https://edms.cern.ch/document/1497271/1 Some dimensions are not compliant with spec tolerances The parallelism between the flange and the ring, and the diameter of the ring are the most relevant tolerances not achieved The knife is acceptable, instead.

6. Click here to add footer 6 C. Parente (HL-LHC Technical Quality Officer) Nb-Nb Welds: o The results are satisfactory according to EN ISO 13919-2 level B, standard specified in our Engineering Specification. o The geometrical dimensions will be measured in metallographic test in order to validate the RF restrictions. NbTi-Nb Weld: o Radiographic test is not conclusive. o Metallographic test will lead to a more clear conclusion. 4.Radiographic Test: DESTRUCTIVE TEST ON GOING Beam tube for Crab Cavity