1. Collimator motorization/control SPS/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
MTBF of 500’000 hours says that there is an 83.9% probability that the product will operate for the 10 years without a failure

3. Test SPS LSS5/TT40 equipments
Motorization* 5μm LEP(1MGy)
Resolver 5μm LEP(1MGy)
Linear potentiometer 100μm ≥50MGy
LVDT 20μm ≥50MGy
PT /10°C
Accelerometer piezo (10Hz..7kHz)
Audio recorder start remotely
LVDT: Linear Variable Differential Transformer
* contacts: A&P, CEA, Midi Ingenierie

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
Stop drawer = butée

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