# Draft the Idea of M2 Mirror Safety Test

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#### Details

• Type: Story
• Status: Done
• Resolution: Done
• Fix Version/s: None
• Component/s:
• Labels:
• Story Points:
3
• Sprint:
TSSW Sprint - Nov 07 - Nov 21
• Team:
Telescope and Site
• Urgent?:
No

#### Description

Draft the idea of M2 mirror safety test. This task will just consider the minimum things we could do to ensure the mirror is safe when using the M2 cell control system. There is no intention to verify the LTS-107 (requirement document) since it is unpractical under this tight schedule (and we are replacing all the Harris software at this moment). Instead, this ticket is to consider a possible test plan and clarify the possible factors to do the judgement. This will consider the possible simulation test as well.

Note. Based on Doug, people believe the M1M3 actual mirror should be safe because the related support system passed all the requirements.

1. Compare the parameter files between the surrogate mirror and actual mirror.
2. Force --> Step --> Displacement under 0-90 degree
3. Check the AOS correction of M2 bending mode in um. Use the file of M2_1um_grid.yaml in ts_phosim.

#### Activity

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Te-Wei Tsai added a comment -

https://github.com/lsst-ts/ts_notebooks/pull/98

I will clean the output of notebook after your review.

Thanks!

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Te-Wei Tsai added a comment - Please help to review the PR: https://github.com/lsst-ts/ts_notebooks/pull/98 I will clean the output of notebook after your review. Thanks!
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Te-Wei Tsai added a comment - - edited

I think we should take it more serious to check the LUT parameters and hardpoint correction between the surrogate and mirror.

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Te-Wei Tsai added a comment - - edited I think we should take it more serious to check the LUT parameters and hardpoint correction between the surrogate and mirror.
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Te-Wei Tsai added a comment -

After the testing with the M2 cRIO simulator, which has the full algorithm implemented, I think maybe the problem of M2 Python simulator comes from the simplified algorithm. In the all, it would be good to use the surrogate to do the test. There are four configuration files that we should compare first:

 Configurable_File_Description_20180831T091922_M2_optical.csv Configurable_File_Description_20180831T092326_M2_handling.csv Configurable_File_Description_20180831T092423_surrogate_optical.csv Configurable_File_Description_20180831T092556_surrogate_handling.csv 

Show
Te-Wei Tsai added a comment - After the testing with the M2 cRIO simulator, which has the full algorithm implemented, I think maybe the problem of M2 Python simulator comes from the simplified algorithm. In the all, it would be good to use the surrogate to do the test. There are four configuration files that we should compare first: Configurable_File_Description_20180831T091922_M2_optical.csv Configurable_File_Description_20180831T092326_M2_handling.csv Configurable_File_Description_20180831T092423_surrogate_optical.csv Configurable_File_Description_20180831T092556_surrogate_handling.csv
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Te-Wei Tsai added a comment -

Thanks Pablo approved the PR.

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Te-Wei Tsai added a comment - Thanks Pablo approved the PR.

#### People

Assignee:
Te-Wei Tsai
Reporter:
Te-Wei Tsai
Reviewers:
Pablo Zorzi
Watchers:
Pablo Zorzi, Te-Wei Tsai