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Next planned test steps on two beam prototype modules

Next planned test steps on two beam prototype modules. With input from Michail Anastasopoulos, Nicolas Chritin, Sylvain Griffet, Juha Kemppinen, Raphaël Leuxe, Mateusz Sosin. Special thanks to Serge Lebet and Philippe De Souza. 07-02-11. Short term program & expected results by end of 2012.

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Next planned test steps on two beam prototype modules

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  1. Next planned test steps on two beam prototype modules With input from Michail Anastasopoulos, Nicolas Chritin, Sylvain Griffet, Juha Kemppinen, Raphaël Leuxe, Mateusz Sosin Special thanks to Serge Lebet and Philippe De Souza 07-02-11 H. MAINAUD DURAND

  2. Short term program & expected results by end of 2012 Two beam prototype modules • Validation of the following strategies [Q1 - Q3 2011] • Pre-alignment of the components on their support within 10 microns, inter-comparison between methods (AT 401, micro-triangulation,…) • Articulation point : the adjacent extremities of girders follow within a few microns • Micrometric adjustment using linear actuators • Alignment systems providing a determination of the position with micrometric accuracy and precision [Q2 - Q4 2011] • Inter-comparison between oWPS and cWPS • Inter-comparison between RASNIK and WPS [Q3 - Q4 2011] • Active pre-alignment: tests of the algorithms [Q2 2011] • Feedback concerning schedule, cost, general strategy of installation, and two beam modules in CLEX • Compatibility with other systems (vacuum, waveguides,…), stability [Q3 2011 – Q3 2012]

  3. Zoom on the next 6 months… Once girders are re-installed in 169 Installation & validation of alignment systems Qualification of linear actuators (1DOF tests) Mid March Alignment of Micro-contrôle girders w.r.t station unit Fiducialisation and dimensional control Tests Without external constraints (vacuum, waveguides) [2 months] Tests With external constraints

  4. Installation & validation of alignment systems Zoom … (Michail) (Michail) On concrete blocks On girders + cradles Around modules • Install & adjust plates • Install & adjust stretching devices • Install cWPS sensors + tiltmeters • Install cWPS • install tilt meter • Install cables + acquisition system • Prepare software Install stretched wires Validation of alignment systems (radial & vertical displacements of wires in order to check proportional responses of sensors)

  5. Qualification of linear actuators (1DOF tests) Zoom … 1 DOF test bench (Mateusz) • 1DOF test bench : design ok, assembly ok, software ready end of this week • Qualification of Boostec linear actuators one per one [week 07 & 08] • Qualification of Micro contrôle linear actuators one per one [week 09 & 10] • Tests foreseen (over the whole range): • Linearity • Repeatability • Resolution • Determination of backlash

  6. Tests Zoom … (Mateusz Sosin) • Qualification of concept of articulation point (Micro-contrôle versus Boostec/CERN: • Metrological evaluation • Behavior of the articulation point w.r.t micrometric displacements, w.r.t larger displacements (+/- 1mm) • Impact at beam level • Impact of displacements on adjacent articulation points • Validation of algorithm of repositioning • Implementation of active pre-alignment

  7. Zoom … Fiducialisation and dimensional control • Inter-comparison between methods: • Romer Arm: order, reception tests & « prise en main » • Laser Tracker AT 401: order, reception tests & « prise en main » • Micro-triangulation: development of software, qualification tests, order of material • Preparation, follow-up of all dimensional controls & fiducialisation on components. (see table)

  8. Zoom … Fiducialisation and dimensional control (Sylvain)

  9. Short term program & expected results by end of 2012 MB quad mock-up • Mock-up ready [end of February 2011] • Validation of the algorithm of repositioning [Q1-Q2 2011] (Michail, Raphaël) • Validation of sub-micrometric active alignment using WPS sensors and cam movers [Q1-Q2 2011] • Compatibility with stabilization requirements (first Eigen frequency > 50 Hz) [Q2 2011] • Feedback for design of the MB quad mock-up type 1 and 4, foreseen for the two beam prototype modules in lab and CLEX [Q3 2011 - Q1 2012] 9

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