Reproduction interdite © ALMA EUROPEAN CONSORTIUM Reproduction forbidden Design, Manufacture, Transport and Integration in Chile of ALMA Antennas Page 1 Design, Manufacture, Transport and Integration on-site in Chile of ALMA Antennas Qualification PM#06 Mainz – 18/19 July 2006

Reproduction interdite © ALMA EUROPEAN CONSORTIUM Reproduction forbidden Design, Manufacture, Transport and Integration in Chile of ALMA Antennas Page 2 Adjusters  Delta-qualification tests will be performed in order to verify the adjusters changes occurred from the ALMA prototype manufacturing and nowadays:  Range and accuracy verification will be tested at Adjuster level on the pre-series production  Static & Stiffness test will be performed at Adjuster level  Thermal Conductivity and CTE will be performed at Adjuster level (TBC)  Fatigue test will be performed at Adjuster level (TBC)  Hot, Cold and Damp exposure and Temperature Cycling of the bell base + bellow (according to IEC 68-2-x or equivalent standard  Stability will be verified at sub-assembly level: the test set-up will include one of the reflector panels and the relevant 1+4 adjusters and the panel temperature will be changed and panel displacement measured (under AAS-I responsibility)  Expected required time is 3 months  Qualification tests results shall be the go-ahead for the authorization to proceed of the manufacturing of the required adjusters and tools

Reproduction interdite © ALMA EUROPEAN CONSORTIUM Reproduction forbidden Design, Manufacture, Transport and Integration in Chile of ALMA Antennas Page 3 Adjusters Tools  Visual inspection  Mass  Interfaces  Electrical Bonding  Functionality check  Data downloading (Automatic tool only)  Drop test (Automatic tool only

Reproduction interdite © ALMA EUROPEAN CONSORTIUM Reproduction forbidden Design, Manufacture, Transport and Integration in Chile of ALMA Antennas Page 4 Reflector Panels  The windblown dust and sand test, as proposed in AEM TM 10, is under definition and finalization  The test will consists of three parts, each of them simulating ten years life:  The test will start with three samples subjected to the windblown particles; after 55mn per each orientation (relevant to wind speed 8 m/s) plus 20mn (relevant to wind speed 15 m/s) one of the samples will be removed and checked.  The test will continue with same sequence and duration on the remaining two samples; at completion of this second step the second sample will be removed and checked.  The last sample will be subjected to the last step of the test and then checked  Success criterion will be based on the thermo-optical performance degradation: the absorbance  shall not be degraded more than 30%

Reproduction interdite © ALMA EUROPEAN CONSORTIUM Reproduction forbidden Design, Manufacture, Transport and Integration in Chile of ALMA Antennas Page 5 Buck-Up Structure  Possible delta qualification on bonded joints if resin changes  Validity of Click Bond qualification, performed during prototype activities, is under evaluation