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[Xu Sun <sunxuhit AT gmail.com>]

Hi Elke,

The module 3-11 is the first module in that cooling line.

And the cooling supply will go to the outer section first then the inner section of the module 3-11.

I agree that the temperature issue might not be caused by the cooling flow, but we would still like to try one more time.

Best,

Xu 

On Tue, Nov 16, 2021 at 4:53 PM Aschenauer Elke-Caroline <elke AT bnl.gov> wrote:

Dear Xu,

let me ask a question today at the meeting I asked you is it the module the first or the last one in the cooling chain and you answered the first one.

So if really the cooling is causing the temperature issue. Maybe I misunderstood your answer today, sorry.

I’m not against increasing the flow, but I’m just wondering.

Cheers elke

On Nov 16, 2021, at 16:49, Xu Sun <sunxuhit AT gmail.com> wrote:

Hi All,

We are planning to increase the cooling flow speed by changing the pump setting from 1100 RPM to 1500 RPM tomorrow.

This change will increase the flow rate by 20-30% and the pressure is still well below the limit of the soft tube.

Christian will help us to do this.

The flow speed will be changed back to 1100 RPM after we finish the test, since the current value is sufficient enough to cool down the whole FST.

Hopefully this can fix the temperature issue.

We will keep you posted.

Best,

Xu

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