sPHENIX discussion of the superconducting solenoid

["Than, Yatming (Roberto)" <ythan AT bnl.gov>]

The 912 ODH system is setup to shut the LN2 valve to the cryo plant during an ODH alarm.  We will need to check where the sensor is relative to reliefs. Quench will release helium.

Sent from my Verizon 4G LTE Droid

On Nov 21, 2017 5:47 PM, "Yip, Kin" <kinyip AT bnl.gov> wrote:

Hi,

Hearing this after getting off my flight from Kathmandu to HK, it's exhilarating 😁 I felt sorry that I couldn't see and learn how you guys opened that flange by just a quarter of an inch and was still able to replace the O-ring ?! 

Thanks to all and I send this to our mailing list for record keeping.  I've also inserted it into our calendar.

Kin

PS: 

And I couldn't but continue to amaze at how important this pesky O-ring --- which caused Challenger to break apart --- is !

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

From: Mills, James A

Date: Wed, Nov 22, 2017 06:16

To: Than, Yatming (Roberto);Ceruti, Raymond B;Phillips, David B;

Cc: Orfin, Paul;VanEssendelft, Melvin J;Anerella, Michael D;Yip, Kin;Kobasiuk, Frederick D;Anerella, Michael D;Van Kuik, Brian;

Subject:RE: sPHENIX Magnet Vacuum Leak Repair

OK, great, thanks Roberto and many thanks to the entire team working on this. 

 

Best,

Jim

 

From: Than, Yatming (Roberto)
Sent: Tuesday, November 21, 2017 3:44 PM
To: Mills, James A; Ceruti, Raymond B; Phillips, David B
Cc: Orfin, Paul; VanEssendelft, Melvin J; Anerella, Michael D; Yip, Kin; Kobasiuk, Frederick D; Anerella, Michael D; Van Kuik, Brian
Subject: RE: sPHENIX Magnet Vacuum Leak Repair

 

The rate of is less than 1 Torr/hr currently at 5.5 Torr

It should come to equilibrium below 14 Torr if it just water vapor outgassing.

 

 

 

 

Roberto Than

Cryogenic Systems, Collider-Accelerator Department
Brookhaven National Laboratory
Building 1005S, MS 1005S, Room 212
Upton, NY 11973-5000
Telephone: (631) 344-7165
Cell 631-487-6842 
E-mail: ythan AT bnl.gov

 

From: Mills, James A
Sent: Tuesday, November 21, 2017 3:16 PM
To: Ceruti, Raymond B <rayc AT bnl.gov>; Phillips, David B <phillips AT bnl.gov>
Cc: Than, Yatming (Roberto) <ythan AT bnl.gov>; Orfin, Paul <porfin AT bnl.gov>; VanEssendelft, Melvin J <mvaness AT bnl.gov>; Anerella, Michael D <mda AT bnl.gov>; Yip, Kin <kinyip AT bnl.gov>; Kobasiuk, Frederick D <kobasiuk AT bnl.gov>; Anerella, Michael D <mda AT bnl.gov>
Subject: RE: sPHENIX Magnet Vacuum Leak Repair

 

Great news Ray!  Thank you for taking care of this so quickly and getting us back on line.

 

Jim

 

From: Ceruti, Raymond B
Sent: Tuesday, November 21, 2017 2:44 PM
To: Phillips, David B <phillips AT bnl.gov>
Cc: Mills, James A <mills AT bnl.gov>; Than, Yatming (Roberto) <ythan AT bnl.gov>; Orfin, Paul <porfin AT bnl.gov>; VanEssendelft, Melvin J <mvaness AT bnl.gov>; Anerella, Michael D <mda AT bnl.gov>; Yip, Kin <kinyip AT bnl.gov>; Kobasiuk, Frederick D <kobasiuk AT bnl.gov>; Anerella, Michael D <mda AT bnl.gov>
Subject: RE: sPHENIX Magnet Vacuum Leak Repair

 

Hi All,

 

     This morning we found that the O ring in the joint between the extension tube and outer connection box was defective.  Subsequently, a new one was installed and Paul started pumping the insulating vacuum down.  We checked back later after lunch and it now appears to be behaving normally.

 

Have a great holiday weekend one and all,

Ray

 

 

 

From: Phillips, David B
Sent: Monday, November 20, 2017 5:00 PM
To: Ceruti, Raymond B
Cc: Mills, James A; Than, Yatming (Roberto); Orfin, Paul; VanEssendelft, Melvin J; Anerella, Michael D; Yip, Kin; Kobasiuk, Frederick D
Subject: sPHENIX Magnet Vacuum Leak Repair

 

Ray,

 

Attached is the plan for the repair of the sPHENIX Magnet vacuum leak we discussed today.

I also put a paper copy in the folder with EWP SS2017-201, which is hanging by “dog house”.

 

Dave

 

David Phillips

Building 911B

Upton, NY 11973

631-344-4671, Fax 631-344-5954, Cell 631-804-9477

On site pager 344-3456 then 4267 then your number