sPHENIX discussion of the superconducting solenoid

[Kin Yip <kinyip AT bnl.gov>]

Hi,

Below are the pressure test results from Ray Ceruti that was performed this morning.  I think our operating pressure are like those 20 - 40 PSI.   ( Are they PSIG or PSIA ? )
I hope somebody may comment whether we may operate with these levels of insulating vacuum.

Kin

-------- Forwarded Message -------- Subject: RE: Result ? Date: Tue, 20 Oct 2015 13:20:32 -0400 From: Ceruti, Raymond B <rayc AT bnl.gov> To: Yip, Kin <kinyip AT bnl.gov> CC: Anerella, Michael D <mda AT bnl.gov>, Kovach, Paul E <kovach AT bnl.gov>, Cubillo, Mario <mcubillo AT bnl.gov>, Chuc, Mary <mchuc AT bnl.gov>

Hi Kin,

      The test began with a leak detector reading of: 7.3 X 10-9  on the insulating vacuum and no helium applied.

 

After 10 minutes of 81 PSI helium applied to the internal system,-------------- the detector reading dropped to and leveled off at:  2.7 X 10-6

 

Not listed on the formal test we lowered the pressure to 40 PSI and held it for 20 minutes.  The detector reading leveled off at:  2.9 X 10-7

 

We then lowered the pressure to 20 PSI and held for another 20 minutes,----------------------The  detector reading leveled off at:  2.2 X 10-7

 

Regards,

Ray

 

 

 

From: Yip, Kin
Sent: Tuesday, October 20, 2015 12:19 PM
To: Ceruti, Raymond B
Subject: Result ?

 

What's the outcome of this morning's pressure test ?

 

Sent from my BNL Verizon Smartphone