60 lines
1.9 KiB
Markdown
60 lines
1.9 KiB
Markdown
# finesse simulation O4
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This simulation aims to replicate simulation result from
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[Optickle](https://git.ligo.org/virgo/virgoapp/simulinkNoiseBudget/-/blob/master/DRITF/scatterRadiationPressure.m)
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to get transfer functions between sensitivity and benches movement.
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The final objective is to use [Finesse](https://finesse.ifosim.org) to compute
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future backscatter noise projection.
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## Getting started
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This project use [uv](https://docs.astral.sh/uv/) to manage dependencies, and
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[mise](https://mise.jdx.dev/) to manage python version and virtual environment.
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To run the program, you can use
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[jupyter lab](https://jupyterlab.readthedocs.io/en/latest/) to run the
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[main](main.ipynb) notebook. By running the following command:
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```bash
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uv sync
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jupyter lab
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```
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> [!NOTE]
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> You can still use pip to manage dependencies using [pyproject.toml](pyproject.toml)
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## Sensitivities
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The [reference file](sensitivities/O4_nominal_reference.txt) is taken from
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Virgo observation data on the 7th of June 2024, (500 second from GPS time:
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1401789000)
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The [other file](sensitivities/finesse-virgo.npy) is generated using
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[this notebook](generate_from_finesse-virgo.ipynb)
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## Optickle comparison
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The file [optickle.mat](optickle.mat) was obtained using this
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[version](https://git.ligo.org/virgo/virgoapp/simulinkNoiseBudget/-/blob/9848794f00ccb5b6c6fa74309f9019df3f2e1387/DRITF/scatterRadiationPressure.m)
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with the 59 & 60 lines of `DRITF/scatterRadiationPressure` removed and the lines
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51 & 52 updated to:
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```matlab
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par.P_darkFringe = 8
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par.P_laser = 25
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```
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Which means the result were obtained with a aligned SR mirror, like in the
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Finesse simulation
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## License
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This project is licensed under the GNU GPL v3+.
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See [license file](LICENSE) for more information.
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## Acknowledgment
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Thanks to all the people that worked on
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[Finesse](https://finesse.ifosim.org/docs/latest/backmatter/about.html), and on
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all the software and library used in this project.
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