sPHENIX discussion of the superconducting solenoid

["Schultheiss, Carl" <carls AT bnl.gov>]

I agree, use “deionized water” for water-cooled bus.

I didn’t think it was a question.

 

Carl

 

From: sPHENIX-magnet-l <sphenix-magnet-l-bounces AT lists.bnl.gov> On Behalf Of Yip, Kin
Sent: Tuesday, January 26, 2021 10:04 AM
To: Streckenbach, Brian <bstreckenbach AT bnl.gov>
Cc: sphenix-magnet-l AT lists.bnl.gov
Subject: [Sphenix-magnet-l] We do need deionized water for water-cooled bus !!

 

Hi,

 

I’ve asked Charlie Pearson … in fact, you/we should have asked this kind of old PHENIX question to Charlie anyway.

 

He gave me a quick lecture … The answer is that we do need “deionized water” for water-cooled bus.  He told me that our deionized water is not that pure/aggressive

that it’d erode the metal aggressively ;  but it does have much LESS minerals than open-air water or tap water which would have non-negligible

conductivity (i.e. too high conductivity or too low resistance).   It’s a balance between the two. He quoted the no. 10 MOhm or something.    He told me that in the old days

when they used open-air water, it has given them constant problem and struggle …

 

So, please do use deionized water !

 

Kin

 

PS:  I put in in our mailing list so that if I forget again, I can read what I’ve just written here.