sPHENIX discussion of the superconducting solenoid

["Yip, Kin" <kinyip AT bnl.gov>]

Hi Ray,

Thanks for letting me know and all the hard work !   

Apparently, the hunt for leak continues ...

Kin

------ Original message------

From: Ceruti, Raymond B

Date: Fri, Oct 9, 2015 12:48

To: Yip, Kin;

Subject:RE: SPhenix ready for pressure leak test II --- success ?

Hi Kin,

     All looked good yesterday but this morning we had helium background in the vacuum vessel so I called off the test.  There is still a five to six scale leak somewhere else that we need to find.  Apparently it doesn’t show up right away.  We will leave the helium circuit under pressure over the weekend with some components bagged off.  With luck maybe we will find something on Monday.

Regards,

Ray

 

From: Kin Yip [mailto:kinyip AT bnl.gov]
Sent: Friday, October 09, 2015 11:48 AM
To: Ceruti, Raymond B
Subject: Re: SPhenix ready for pressure leak test II --- success ?

 

Hi,

I guess you've performed the pressure test, right ?  Is it a success ??

Kin

On 10/08/2015 10:40 AM, Ceruti, Raymond B wrote:

I spoke with Mario on the phone.  We have agreed to meet tomorrow morning at 9:00AM in 912 and hopefully put this baby to bed then.

Thanks,

Ray

 

From: Gaffney, Michael
Sent: Thursday, October 08, 2015 10:32 AM
To: Ceruti, Raymond B; Chuc, Mary
Cc: Yip, Kin; Cubillo, Mario
Subject: RE: SPhenix ready for pressure leak test II

 

Do you want to do it a 1 pm?

 

w/r

Mike Gaffney

BNL Safety Engineering Group

gaffney AT bnl.gov

 

 

From: Ceruti, Raymond B
Sent: Thursday, October 08, 2015 9:55 AM
To: Gaffney, Michael; Chuc, Mary
Cc: Yip, Kin; Cubillo, Mario
Subject: RE: SPhenix ready for pressure leak test II

 

   Hi Mike,

    We have already tested with more than ½ operating pressure as I wouldn’t have requested a safety witness without making sure that the test would likely pass.  We are set up and more than ready, It will not require much time to witness at all.

Regards,

Ray

 

 

From: Gaffney, Michael
Sent: Thursday, October 08, 2015 9:29 AM
To: Ceruti, Raymond B; Chuc, Mary
Cc: Yip, Kin; Cubillo, Mario
Subject: RE: SPhenix ready for pressure leak test II

 

Ray:

I have a nuclear stress test tomorrow morning, so I will be TLD-less for a few days.

Mario should be able to witness the test tomorrow morning.

I recommend that you put up to ½ operating pressure before then to verify there is no leak (if nothing shows a that pressure, there is a high probability it will work).

 

w/r

Mike Gaffney

BNL Safety Engineering Group

gaffney AT bnl.gov

 

 

From: Ceruti, Raymond B
Sent: Thursday, October 08, 2015 9:11 AM
To: Gaffney, Michael; Chuc, Mary
Cc: Anerella, Michael D; Wanderer, Peter; Yip, Kin
Subject: SPhenix ready for pressure leak test II

 

Good Morning Mike, Mary,

    Since out last attempt with this test, we have repaired two leaks that were found in the liquid helium system of the XPhenix valve box.  The vacuum vessel is presently closed up and under vacuum.  We are ready at this point to perform another pressure leak test.  Please let me know at your earliest convenience when you might be able to witness the test.

Thanks and Regards,

Ray