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STM Vibration Isolation #42

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opened 2025-05-23 23:58:45 +00:00 by rahix · 2 comments
rahix commented 2025-05-23 23:58:45 +00:00
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We need to build a vibration isolated mount for the STM. We plan to use a spring-damper with the spring element being very long tension springs and the damper being magnets functioning as an eddy current brake (Wirbelstrombremse).

The Vibration Isolation Frame is currently developed over in https://git.fa-fo.de/fafo/k8ik-stm.

Working state CAD:

Screenshot of current CAD

The calculated performance of this vibration isolation setup is the blue line in the following diagram. There are some real-world optical table isolation curves plotted alongside it for comparison:

image

We need to build a vibration isolated mount for the STM. We plan to use a spring-damper with the spring element being very long tension springs and the damper being magnets functioning as an eddy current brake (Wirbelstrombremse). The Vibration Isolation Frame is currently developed over in <https://git.fa-fo.de/fafo/k8ik-stm>. Working state CAD: ![Screenshot of current CAD](https://git.fa-fo.de/fafo/k8ik-stm/media/branch/main/CAD-Screenshot.png) The calculated performance of this vibration isolation setup is the blue line in the following diagram. There are some real-world optical table isolation curves plotted alongside it for comparison: ![image](/attachments/330051d0-81b7-447e-aee3-e4444c90d37a)
image.png
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rahix added the
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 label 2025-05-23 23:58:45 +00:00
rahix self-assigned this 2025-05-23 23:58:45 +00:00
k8ik was assigned by rahix 2025-05-23 23:58:45 +00:00
forgejo-actions commented 2025-05-23 23:58:52 +00:00
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Partial Techtree

flowchart BT

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    classDef dep_missing fill:#fcc, stroke:#800, color:#000;
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    classDef dep_completed fill:#afa, stroke:#080, color:#000;
    0:::eoi
    0["<a href='https://git.fa-fo.de/fafo/techtree/issues/42' target='_blank'>#42</a> | COMPLETED\n<i>Development</i>\n<b>STM Vibration Isolation</b>"]
    1:::dependant
    1["<a href='https://git.fa-fo.de/fafo/techtree/issues/43' target='_blank'>#43</a> | ASSIGNED\n<i>Development</i>\n<b>Scanning Tunneling Microscope (STM)</b>"]
    1 --> 0

Digest: 976e00c89bc42571cfb590dae58c66ad694336c3073174af93da3230dece6874; Last Updated: 2025-06-15 21:48:34

## Partial Techtree ```mermaid flowchart BT classDef eoi fill:#fff, stroke:#000, color:#000; classDef dependant fill:#fff, stroke:#888, color:#888; classDef dep_missing fill:#fcc, stroke:#800, color:#000; classDef dep_assigned fill:#ffa, stroke:#a50, color:#000; classDef dep_completed fill:#afa, stroke:#080, color:#000; 0:::eoi 0["<a href='https://git.fa-fo.de/fafo/techtree/issues/42' target='_blank'>#42</a> | COMPLETED\n<i>Development</i>\n<b>STM Vibration Isolation</b>"] 1:::dependant 1["<a href='https://git.fa-fo.de/fafo/techtree/issues/43' target='_blank'>#43</a> | ASSIGNED\n<i>Development</i>\n<b>Scanning Tunneling Microscope (STM)</b>"] 1 --> 0 ``` <small>Digest: 976e00c89bc42571cfb590dae58c66ad694336c3073174af93da3230dece6874; Last Updated: 2025-06-15 21:48:34</small>
rahix added a new dependency 2025-05-24 00:00:24 +00:00
#43 Scanning Tunneling Microscope (STM)
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 labels 2025-05-24 02:12:04 +00:00
rahix commented 2025-06-15 21:44:34 +00:00
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I think with the latest results from the STM experiment control loop stability, I am willing to call this completed!

I think with the latest results from the STM experiment control loop stability, I am willing to call this completed!
rahix added the
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 label 2025-06-15 21:48:28 +00:00
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