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# FMC FSI photodetection module 8ch
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## Project description
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**The FMC-FSI-DET-8CH is a Frequency Scanning Interferometry (FSI) photodetection
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module with 8 channels.** It enables data acquisition of optical signals
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from the gas cell, the reference interferometers and return signals of
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interferometer channels.
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**FSI allows absolute distance measurement:**
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- with high accuracy (µm level)
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- with no contact
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- without need of homing of measured component
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-----
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## Main Features
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-----
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## Project information
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- Official production documentation
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- Design Specification
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- [Users](Users)
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- [Frequently Asked Questions](FAQ)
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-----
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## Contacts
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### Commercial producers
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- The design is not yet available as a commercial product
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### General questions about project
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- [Maciej Lipinski](mailto:maciej.marek.lipinski@cern.ch@cern.ch) - CERN
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-----
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## Status
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| Date | Event |
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| -------- | -------- |
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| 01-08-2017 | First multi-target FSI prototype setup tested at CERN. |
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| 26-08-2019| [FSI presented](https://indico.cern.ch/event/831552/contributions/3484597/attachments/1896834/3130203/1_FSI_Introduction_MS.pdf) at the HiLumi HL-LHC project review. |
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| 01-03-2020| Review of FSI prototype design. |
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-----
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1 March 2021 |
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\ No newline at end of file |