sphenix-magnet-l AT lists.bnl.gov

Subject: sPHENIX discussion of the superconducting solenoid

List archive

[Sphenix-magnet-l] Break Repair continues ...

From: Kin Yip <kinyip AT bnl.gov>
To: "sphenix-magnet-l AT lists.bnl.gov" <sphenix-magnet-l AT lists.bnl.gov>
Subject: [Sphenix-magnet-l] Break Repair continues ...
Date: Mon, 28 Sep 2015 09:46:02 -0400

Dear Ray,

Thanks for the update. Things are never simple....

Please keep us posted.

Sent from my BNL Verizon Smartphone

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

From: Ceruti, Raymond B

Date: Mon, Sep 28, 2015 07:24

To: Yip, Kin;

Subject:FW: Break Repair

Hi Kin,

We worked with a welder on Thursday to install the new ceramic cryogenic break with an argon purge. Since then we pressurized the system and sniffed with a leak detector. The new break and weld joints are all good now but we are getting helium background coming up the stack from below. The source of this needs to be investigated further before we can attempt to perform another vacuum/pressure leak test. This week we will attempt to determine what else is leaking.

Regards,

Ray

Attachment: IMG_20150924_132341065.jpg
Description: JPEG image

[Sphenix-magnet-l] Break Repair continues ..., Kin Yip, 09/28/2015