1. Temperature and humidity effect on the tracking accuracy.
I.Kreslo LHEP University of BERN

2. Positions of three FM’s are repeatedly measured:
I.Kreslo LHEP University of BERN

3. Plate always on the stage. Absolute Distance between two FMs
I.Kreslo LHEP University of BERN

4. Plate always on the stage. Relative Distance between two FMs
I.Kreslo LHEP University of BERN

5. Plate is taken and put back before each measurement.
Absolute Distance between two FMs
Temperature effect?
I.Kreslo LHEP University of BERN

6. Let’s try to measure a temperature…
Temp. sensor
I.Kreslo LHEP University of BERN

7. Plate always on the stage. Absolute Distance between two FMs
I.Kreslo LHEP University of BERN

8. Plate always on the stage. Absolute Distance between two FMs
I.Kreslo LHEP University of BERN

9. 10 plates a sequentially put onto the stage.
Absolute Distance between two FMs
Uncorrected
Corrected
I.Kreslo LHEP University of BERN

10. Best achievable accuracy. Absolute Distance between two FMs
I.Kreslo LHEP University of BERN

11. Temperature is to be monitored in few points. Humidity too?
Pre-Conclusions
1.5 orders of magnitude progress is possible in track position measuring accuracy.
Temperature is to be monitored in few points.
Humidity too?
I.Kreslo LHEP University of BERN

12. Humidity sensor is installed
I.Kreslo LHEP University of BERN