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Planning CLIC MBQ stabilisation for the test modules

Planning CLIC MBQ stabilisation for the test modules. CLIC MBQ Stabilisation is still in full R&D phase: i.e. There is NO FINAL DESIGN YET for the stabilisation in the test module. It is hence of little use to make component lists etc now. 2011 : q1+q2 Installation of type1 module

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Planning CLIC MBQ stabilisation for the test modules

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  1. Planning CLIC MBQ stabilisation for the test modules CLIC MBQ Stabilisation is still in full R&D phase: i.e. There is NO FINAL DESIGN YET for the stabilisation in the test module. It is hence of little use to make component lists etc now. 2011 : q1+q2 Installation of type1 module q3+q4 Installation of type 4 module 2010 : 4 steps toward demonstration on MBQ type 4 (+ type 1)

  2. CERN option: Steps toward performance demonstration 1. Stabilisation single d.o.f. with small weight (“membrane”) First result: This is not a TMC table... Study and tests now ongoing for improvements: Improve controllers, filters, resolution, mechanics... 1.2 nm Combinations of feedback and feedforward

  3. CERN option: Steps toward performance demonstration 2. Stabilisation single d.o.f. with type 1 weight (“tripod”) 2 passive feet actuator S. Janssens Preliminary result Will be improved : • Optimise controller design • (Tuning, Combine feedback with feedforward) Expected • Improve resolution (actuator, DAQ) • Avoid low frequency resonances in structure and contacts • Noise budget on each step, • ADC and DAC noise

  4. CERN option: Steps toward performance demonstration 3.Stabilisation two d.o.f. with type 1 quadrupole weight (“tripod”) 3a. Inclined leg with flexural joints Status: Launch first prototype flexural hinges Goal: start tests March 2010 3b. Two inclined legs with flexural joints y Status: Modelling x Goal: start tests May 2010 3c. Add a spring guidance Load compensation (Status: start design) Precision guidance Reduce degrees of freedom Reduce stress on piezo 3d. Test equivalent load/leg

  5. CERN option: Steps toward performance demonstration 4. Stabilisation of type 4 (and type 1)CLIC MB quadrupole proto type • Lessons learnt step 1 to 3 • Results Tests 1 to 3 • Cost analysis • (number of legs= cost driver) Design for the 4 types • # degrees of freedom • Stress and dynamic analysis Goal: start assembly and testing on type 4 prototype summer 2010 • Range nano-positioning • Resolution Results autumn 2010

  6. Tentative planning Remarks: • Stabilisation is in R&D phase. Feasibility demonstration has priority over integration in module. • Outcome from tests will lead to decisions about different versions with updated technical solutions. • This can mean that in the test module there might be different versions and upgrades for the stabilisation. • Before validation of choices (i.e. LVPZT or HVPZT), a grouped purchase is not possible: complicated tender. • Strategy: first catalogue products to test, then optimised customised product. (optimised for resolution, size, cost,…)

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