[Esr-users] [Hallb-engineering] [New Logentry] Follow-up Re: Torus Strain Gage Alarm Tripped Again

[Probir Ghoshal]

Dear Dave.
I do acknowledge and concur to your thoughts.
The alarm trigger to new value 2400 is okay with me as we discussed for now but we need some mine to learn and take this from us in the future.

Regards
Probir

________________________________
From: Hallb-engineering <hallb-engineering-bounces at jlab.org> on behalf of kashy--- via Hallb-engineering <hallb-engineering at jlab.org>
Sent: Friday, April 11, 2025 5:30:02 PM
To: esr-users at jlab.org <esr-users at jlab.org>; hallb-engineering at jlab.org <hallb-engineering at jlab.org>; hallb at jlab.org <hallb at jlab.org>
Subject: [Hallb-engineering] [New Logentry] Follow-up Re: Torus Strain Gage Alarm Tripped Again

Follow-up Re: Torus Strain Gage Alarm Tripped Again<https://logbooks.jlab.org/entry/4353679>

Lognumber 4353679<https://logbooks.jlab.org/entry/4353679>. Submitted by kashy<https://logbooks.jlab.org/user/kashy> on Fri, 04/11/2025 - 17:29<https://logbooks.jlab.org/entries?start_date=1744403383&end_date=1744410583&book=HBLOG&book=HBTORUS>.

Logbooks:       HBLOG<https://logbooks.jlab.org/book/hblog> HBTORUS<https://logbooks.jlab.org/book/hbtorus>
Entry Makers:   kashy
References:     4353637 - Torus Strain Gage Alarm Tripped Again<https://logbooks.jlab.org/entry/4353637>

Just to be clear this was not a magnet trip it was an alarm triggered.
This signal is related to the force in a Z support in the Torus and is one of two on Coil B
There are similar supports on coils D and F too.

The alarm values are below 0 and above 2000lbs
The data logger shows this signal (blue plot) has been alarming for most all of 2025 and has slowly crept up since early 2023 (no data is available using the standard plotting routine)

We should probably have someone go deeper and look at many signals to see if there any long term trends that could portent something we could avoid or be ready for...
Who is that person? Yes I could do it, but when I retire who is that? There needs to be someone learning this system and that needs to happen soon!

Anyway for now I raised the alarm trigger range from 0-2000 to 400-2400

Dave

[https://logbooks.jlab.org/files/styles/plentybig/public/2025/04/4353679/Strain%20Gage%20screen%20and%20plot%20of%20Coil%20B%20Z%20support%20forces.png]
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