146 lines
5.1 KiB
Org Mode
146 lines
5.1 KiB
Org Mode
#+TITLE:Measurement of the ID31 Micro-Station
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:DRAWER:
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#+STARTUP: overview
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:END:
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This web-page gathers all the measurements done on the ID31 Micro Station.
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* Measurements of the dynamics of the station
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- [[file:dynamical-meas-granite/index.org][Dynamics from floor motion to marble motion]]
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** Measurement 1
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[[file:2017-11-17%20-%20Marc/index.org][Link to the analysis]]
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*** Notes
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| *Date* | 2017-11-17 |
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| *Sensors* | Accelerometers |
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| *Excitation* | Instrumented Hammer |
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| *Location* | Laboratory |
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Dynamics of the station is evaluated using instrumented hammer and accelerometers fixed on each stage.
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*** Goal
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- Obtain a first estimation of resonance frequencies
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*** Results
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#+begin_important
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- Resonances have been identified at 45Hz and 75Hz
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- However, the quality of the measurements are bad at low frequency
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- New measurements should be done with Geophones
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#+end_important
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** Measurement 2
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[[file:2018-01-12%20-%20Marc/index.org][Link to the analysis]]
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*** Notes
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| *Date* | 2018-01-12 |
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| *Sensors* | Geophones |
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| *Excitation* | Instrumented Hammer |
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| *Location* | Laboratory |
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| *Notes* | Unglued Granite |
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*** Goal
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Obtain better coherence at low frequency.
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*** Results
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#+begin_important
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- Resonances at 42Hz, 70Hz and 125Hz have been identified
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- The coherence is much better than when using accelerometers
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#+end_important
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** TODO Measurement 3
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[[file:2018-10-12%20-%20Marc/index.org][Link to the analysis]]
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*** Notes
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| *Date* | 2018-10-12 |
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| *Sensors* | Geophones |
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| *Excitation* | Instrumented Hammer |
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| *Location* | Experimental Hutch |
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*** Goal
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The station is now installed on the experimental hutch with a glued granite (final location).
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The station is identified again.
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*** Results
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#+begin_important
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#+end_important
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* Measurements of perturbations
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- [[file:slip-ring-spindle-vibrations/index.org][Measurement of the vibrations induced by the rotation of the slip-ring and spindle]]
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- [[file:slip-ring-electrical-noise/index.org][Measurement of the electrical noise induced by the slip-ring]]
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- [[file:ground-motion/index.org][Ground motion measurements]]
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- [[file:static-to-dynamic/index.org][Static guiding errors]]
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- [[file:disturbance-control-system/index.org][Disturbance induced by the control system of each stage]]
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- [[file:disturbance-ty/index.org][Vibrations due to Ty scans]]
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** Noise coming from the control loop of each stage
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[[file:2018-10-15%20-%20Marc/index.org][Link to the analysis]]
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*** Notes
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| *Date* | 2018-10-15 |
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| *Sensors* | Geophones |
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| *Location* | Experimental Hutch |
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*** Goal
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The objective is to estimate how much perturbation is injected in the system by the control systems of each stages of the micro station.
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Geophones are located on the structure.
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Each stage is turned on and off.
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The signals of the geophones are then compared when the stage is on and off.
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*** Results
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- The translation stage seems to have effect on the tilt stage at 20Hz.
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- The Tilt stage and the Hexapod control systems have no effect on the motion of the other stages.
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- The spindle stage control system seems to induce a motion of the Hexapod on the Z direction around 20Hz.
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** Static guiding error estimation
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[[file:Static/index.org][Link to the analysis]]
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*** Notes
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| *Date* | 2019-01-09 |
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| *Sensors* | Interferometer |
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| *Location* | Experimental Hutch |
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Each stage is statically moved of all its stroke on after the other.
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A metrology element is located at the sample position and its motion is measured in translations and rotations.
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For each small displacement, the stage is stopped and the motion of the sample is recorded and averaged.
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*** Goal
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The goal is to estimate the guiding errors of each stage.
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*** Results
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** Spindle Measurements
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[[file:Spindle/index.org][Link to the analysis]]
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*** Notes
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| *Date* | 2017-04-25 |
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| *Location* | PEL Lab |
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*** Goal
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The goal is to estimate all the error motions induced by the Spindle
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*** Results
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* Other measurements - Instrumentation
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- [[file:huddle-test-geophones/index.org][Huddle Test - Geophones]]
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- [[file:instrumentation/index.org][Measurement on the instrumentation]]
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- [[file:disturbance-measurement/index.org][Disturbance Measurement]]
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- [[file:slip-ring-test/index.org][Slip Ring - Noise measurement]]
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- [[file:static-measurements/index.org][Control System Measurement]]
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* Ressources
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- [[file:actuators-sensors/index.org][Actuators and Sensors]]
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- [[file:equipment/equipment.org][Equipment used for the measurements]]
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- [[file:src/index.org][Matlab functions used for the data analysis]]
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