nass-micro-station-measurements/index.org

#+TITLE:Measurement of the ID31 Micro-Station
:DRAWER:
#+STARTUP: overview

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This web-page gathers all the measurements done on the ID31 Micro Station.

* Measurements of the dynamics of the station
- [[file:dynamical-meas-granite/index.org][Dynamics from floor motion to marble motion]]

** Measurement 1
[[file:2017-11-17%20-%20Marc/index.org][Link to the analysis]]

*** Notes
| *Date*       | 2017-11-17          |
| *Sensors*    | Accelerometers      |
| *Excitation* | Instrumented Hammer |
| *Location*   | Laboratory          |

Dynamics of the station is evaluated using instrumented hammer and accelerometers fixed on each stage.

*** Goal
- Obtain a first estimation of resonance frequencies

*** Results
#+begin_important
- Resonances have been identified at 45Hz and 75Hz
- However, the quality of the measurements are bad at low frequency
- New measurements should be done with Geophones
#+end_important

** Measurement 2
[[file:2018-01-12%20-%20Marc/index.org][Link to the analysis]]

*** Notes
| *Date*       | 2018-01-12          |
| *Sensors*    | Geophones           |
| *Excitation* | Instrumented Hammer |
| *Location*   | Laboratory          |
| *Notes*      | Unglued Granite     |

*** Goal
Obtain better coherence at low frequency.

*** Results
#+begin_important
  - Resonances at 42Hz, 70Hz and 125Hz have been identified
  - The coherence is much better than when using accelerometers
#+end_important

** TODO Measurement 3
[[file:2018-10-12%20-%20Marc/index.org][Link to the analysis]]

*** Notes
| *Date*       | 2018-10-12          |
| *Sensors*    | Geophones           |
| *Excitation* | Instrumented Hammer |
| *Location*   | Experimental Hutch  |

*** Goal
The station is now installed on the experimental hutch with a glued granite (final location).
The station is identified again.

*** Results
#+begin_important

#+end_important

* Measurements of perturbations
- [[file:disturbance-sr-rz/index.org][Measurement of the vibrations induced by the rotation of the slip-ring and spindle]]
- [[file:disturbance-ty-sr/index.org][Measurement of the vibrations induced by the simultaneous rotation of the slip-ring and scan of the translation stage]]
- [[file:disturbance-measurement/index.org][Disturbance Measurement - Spindle]] TODO
- [[file:slip-ring-electrical-noise/index.org][Measurement of the electrical noise induced by the slip-ring]]
- [[file:ground-motion/index.org][Ground motion measurements]]
- [[file:static-to-dynamic/index.org][Static guiding errors - Ty]]
- [[file:static-spindle/index.org][Static guiding errors - Spindle]]
- [[file:disturbance-control-system/index.org][Disturbance induced by the control system of each stage]]
- [[file:disturbance-ty/index.org][Vibrations due to Ty scans]]
- [[file:2018-10-15%20-%20Marc/index.org][Perturbation due to the control loop of each stage]]

* Other
- [[file:huddle-test-geophones/index.org][Huddle Test - Geophones]]
- [[file:instrumentation/index.org][Measurement on the instrumentation]]
- [[file:slip-ring-electrical-noise/index.org][Slip Ring - Noise measurement]]
- [[file:static-measurements/index.org][Control System Measurement]]
- [[file:actuators-sensors/index.org][Actuators and Sensors]]
- [[file:equipment/equipment.org][Equipment used for the measurements]]
- [[file:src/index.org][Matlab functions used for the data analysis]]