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Collimator motorization/control SPS/TT40 tests and LHC

Collimator motorization/control SPS/TT40 tests and LHC. Fabrice Decorvet. Requirements for installations in LHC tunnel. 50 Mgy over 10 years 300 to 1500 m wiring line 5 μm position precision Low EMI noise High reliability Restricted human intervention time. Test SPS LSS5/TT40 equipments.

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Collimator motorization/control SPS/TT40 tests and LHC

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  1. Collimator motorization/controlSPS/TT40 tests and LHC Fabrice Decorvet

  2. Requirements for installations in LHC tunnel • 50 Mgy over 10 years • 300 to 1500 m wiring line • 5 μm position precision • Low EMI noise • High reliability • Restricted human intervention time

  3. Test SPS LSS5/TT40 equipments Motorization* 5μm LEP(1MGy) Resolver 5μm LEP(1MGy) Linear potentiometer 100μm ≥50MGy LVDT 20μm ≥50MGy PT100 1/10°C Accelerometer piezo (10Hz..7kHz) Audio recorder start remotely

  4. Wiring requirement • Power dissociate from signal • Appropriate shielding and grounding • Grounding continuity

  5. Wiring: SPS quick plug • Constraint due to narrow section • Additional source for connection error and non-conductor • Ground discontinuity • Extended wires to patch panel • Patch panel in basement

  6. Wiring 50% control price, to save money: • SPS test to define if NE48 cable can be used

  7. Interface

  8. Collimator Performance • Mechanical Stop = reference • Switch = safety • Effective excursion = out of switch

  9. Axe Initialization • Motor off = jaw auto retraction = lim- mechanical Stop = reference • Motor position reset • Read out position sensors (pot/LVDT) • Unable lim- switch • Motor movement out of lim- switch • Effective excursion: 0,5 to 35 mm

  10. Conclusion • SPS test - using LEP motor and control: • Wiring and quick plug • LVDT • Remote control • LHC • Increase motor resistance • Select wiring and quick plug • Define control

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