sPHENIX discussion of the superconducting solenoid

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

Thanks a lot !

 

Vacuum group was using this time to do a “pre-check” on the vacuum from the Extension Doghouse to the Magnet Cryostat to see whether we may pump it down to 100 torr or something

--- Paul Orfin’s suggestion with Dan/Ken.  If this is achieved, it shows that we don’t have a “gross” leak.   This is before Valvebox installation and the more thorough leak check.

 

Kin

 

 

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

From: "Decker, Kenneth" <kdecker AT bnl.gov>

Date: 6/24/22 1:42 PM (GMT-05:00)

To: "Yip, Kin" <kinyip AT bnl.gov>, "Orfin, Paul" <porfin AT bnl.gov>, "Weiss, Dan" <weiss AT bnl.gov>, "Feder, Russell" <rfeder AT bnl.gov>

Cc: "Schultheiss, Carl" <carls AT bnl.gov>, "Toldo, Frank A" <fatoldo AT bnl.gov>

Subject: RE: SPHENIX CRYO INSTALL

 

All,

 

I met with Frank this morning, we discussed how we are going to pump on the system and have already started setting everything up.  If we don’t start pumping today we will start first thing in the morning.

 

Ken Decker

C-AD Vacuum Group

Technical Supervisor

Brookhaven National Laboratory

Ph: 631 344 6079

 

From: Yip, Kin <kinyip AT bnl.gov>
Sent: Thursday, June 23, 2022 10:34 AM
To: Orfin, Paul <porfin AT bnl.gov>; Weiss, Dan <weiss AT bnl.gov>; Feder, Russell <rfeder AT bnl.gov>
Cc: Decker, Kenneth <kdecker AT bnl.gov>; Schultheiss, Carl <carls AT bnl.gov>
Subject: RE: SPHENIX CRYO INSTALL

 

Hello,

 

I’ve talked to Paul Orfin and Dan Weiss.   Paul has the idea that instead of doing any thorough leak check (which we will do after the Valvebox is connected),

the vacuum group can do a “pre-check” to try to pump down the doghouse/Magnet cryostat to ~100 Torr (say).   If that can be accomplished, it means that

there is no “gross” leak.   Dan is now trying to see whether they can do this (hopefully as quickly as possible)  😊   

 

Paul’s “beautiful” plan/wish is that if the vacuum group can connect to the port under the Doghouse on Friday and they can use the weekend to do the vacuuming ….

though Dan told me that they may not be able to do so this weekend.     ( I just talked to Frank Toldo who is on vacation today, in principle, but he’ll be back on tomorrow/Friday. )

 

Kin

 

From: Orfin, Paul <porfin AT bnl.gov>
Sent: Wednesday, June 22, 2022 8:10 PM
To: Yip, Kin <kinyip AT bnl.gov>; Weiss, Dan <weiss AT bnl.gov>; Feder, Russell <rfeder AT bnl.gov>
Cc: Decker, Kenneth <kdecker AT bnl.gov>; Schultheiss, Carl <carls AT bnl.gov>
Subject: RE: SPHENIX CRYO INSTALL

 

Kin,

 

I thought those items had to be moved for the inner HCAL install, apparently that is not the case.

 

The question remains, should a vacuum leak check be done on the current vacuum boundary of the solenoid and the doghouse extension as it currently sits in the AH? Vacuum relief installation and adjustment to the solenoid supports were made which potentially impact the vacuum boundary.  I don’t know the details of either as to determine a risk level.

 

Thank you,

Paul Orfin
Cryogenic Systems, Collider-Accelerator Department
Brookhaven National Laboratory
Telephone: (631) 344-2899

 

From: Yip, Kin <kinyip AT bnl.gov>
Sent: Wednesday, June 22, 2022 5:12 PM
To: Orfin, Paul <porfin AT bnl.gov>; Weiss, Dan <weiss AT bnl.gov>; Feder, Russell <rfeder AT bnl.gov>
Cc: Decker, Kenneth <kdecker AT bnl.gov>; Schultheiss, Carl <carls AT bnl.gov>
Subject: RE: SPHENIX CRYO INSTALL

 

Hi Paul,

 

•   I believe some work was done by Carl on that connector for the voltage taps.

 

I believe you’re talking about the connector below the Extension Doghouse, right ?!

 

Carl has NOT done anything for that connector beside measuring the voltages during the hipot test a few months ago.   I was just chatting with Carl and I told him about

your “accusation” 😊   As we discussed in length a few months ago, we’ll change the connectors (T) below the Doghouse (to L) etc. in the future after the scaffolding is there and after the Valvebox installation.   But we haven’t done anything yet !!!

 

• Was a leak check done to verify Carl’s work as well as the installation of the vacuum reliefs? If not, do we want to do so now or wait till the solenoid valve box is assembled.  

 

Carl agrees that we should do a leak check after the connector (which contains voltage taps) is changed as we planned/agreed a few months ago. 

 

Kin

 

From: Orfin, Paul <porfin AT bnl.gov>
Sent: Wednesday, June 22, 2022 4:51 PM
To: Yip, Kin <kinyip AT bnl.gov>; Weiss, Dan <weiss AT bnl.gov>; Feder, Russell <rfeder AT bnl.gov>
Cc: Decker, Kenneth <kdecker AT bnl.gov>
Subject: RE: SPHENIX CRYO INSTALL

 

Kin,

 

One question that came up at our meeting out at 1008 was whether the solenoid and its dog houses had a vacuum leak check done when it got to the Assembly Hall. 

 

Recalling previous discussions, the risk of damage was low given the transportation distance, so we did not do a pressure test.  I believe some work was done by Carl on that connector for the voltage taps.  The vacuum reliefs were also installed as well as adjustments to the solenoid supports. 

 

Was a leak check done to verify Carl’s work as well as the installation of the vacuum reliefs? If not, do we want to do so now or wait till the solenoid valve box is assembled.  

Thank you,

Paul Orfin
Cryogenic Systems, Collider-Accelerator Department
Brookhaven National Laboratory
Telephone: (631) 344-2899

 

From: Yip, Kin <kinyip AT bnl.gov>
Sent: Wednesday, June 22, 2022 4:41 PM
To: Weiss, Dan <weiss AT bnl.gov>; Feder, Russell <rfeder AT bnl.gov>
Cc: Decker, Kenneth <kdecker AT bnl.gov>; Orfin, Paul <porfin AT bnl.gov>; Than, Yatming (Roberto) <ythan AT bnl.gov>
Subject: RE: SPHENIX CRYO INSTALL

 

Hi Dan,

 

I’m always bold in answering questions …

 

The Valvebox is still in 912 and has not been transported to 1008 yet.    The transportation may happen next week.

Russ and others will help direct the Valvebox installation --- Ray Ceruti in Magnet Div. is one main guy.   But after the installation, I think

Paul Orfin is still your main “interface-person” (sorry for my poor English 😊 ) with our Magnet/Cryo equipment.    

 

But if you need local resources (power …), I believe Russ and/or Frank Toldo can help you.

 

Kin

 

From: Weiss, Dan <weiss AT bnl.gov>
Sent: Wednesday, June 22, 2022 4:33 PM
To: Yip, Kin <kinyip AT bnl.gov>; Feder, Russell <rfeder AT bnl.gov>
Cc: Decker, Kenneth <kdecker AT bnl.gov>; Orfin, Paul <porfin AT bnl.gov>; Than, Yatming (Roberto) <ythan AT bnl.gov>
Subject: RE: SPHENIX CRYO INSTALL

 

Hi Kin, Russ,

 

Vacuum is planning support for vacuum generation and leak detection of the solenoid cryostat and solenoid valve box in the assembly hall.  A vacuum blower station (208V/30A) will be placed on the floor and connected to the SC splice box. Man lift support will be needed for some of this.  Has any of the cryostat or splice box already been leak checked since arrival in the assembly hall?  The valve box will be leak tested once installed on the platform.

 

Who should vacuum group contact and include in coordinating this work?

 

Thanks,

..Dan

 

From: Orfin, Paul
Sent: Thursday, June 16, 2022 2:31 PM
To: Weiss, Dan <weiss AT bnl.gov>; Decker, Kenneth <kdecker AT bnl.gov>
Subject: FW: SPHENIX CRYO INSTALL

 

All,

 

If it was not clear from Roberto’s email, we would like to officially request assistance with sPHENIX vacuum roughing in the Assembly hall.  We can discuss the details separately if you’d like but basically a big rough pump and a long hose would be needed.  We’d also need some vacuum leak checking on the insulating vacuum boundary before we start pumping.  7/11/22 seems to be the rough start date but the schedule seems to keep changing out there. 

 

Thank you,

Paul Orfin
Cryogenic Systems, Collider-Accelerator Department
Brookhaven National Laboratory
Telephone: (631) 344-2899

 

From: Than, Yatming (Roberto) <ythan AT bnl.gov>
Sent: Wednesday, June 15, 2022 11:03 AM
To: Orfin, Paul <porfin AT bnl.gov>; Warkentien, Andreas F <andyw AT bnl.gov>; Michnoff, Robert J <michnoff AT bnl.gov>; Van Kuik, Brian <vankuik AT bnl.gov>; Feder, Russell <rfeder AT bnl.gov>; Tallerico, Thomas N <tallerico AT bnl.gov>; Masi Jr, Leonard <masi AT bnl.gov>; Talty, Patrick <talty AT bnl.gov>; Sheth, Chintan <csheth AT bnl.gov>; O'Connor, Eric <eoconnor1 AT bnl.gov>; Taylor, Cody Shane <ctaylor1 AT bnl.gov>; Hwang, Kenneth <khwang AT bnl.gov>; Danielson, Nils S <ndanielson AT bnl.gov>; Weiss, Dan <weiss AT bnl.gov>; Decker, Kenneth <kdecker AT bnl.gov>
Cc: Mills, James A <mills AT bnl.gov>; Tuozzolo, Joseph E <tuozzolo AT bnl.gov>; Yip, Kin <kinyip AT bnl.gov>
Subject: SPHENIX CRYO INSTALL

 

ASSEMBLY HALL /PLATFORM WORK

One item that we can do before the roll-in and we will not have a completed powering of the system is insulating vacuum system.

In order to do the solenoid insulating volume (cryostat & solenoid valvebox) helium mass spec leak test in the ASSEMBLY HALL, we need to setup a rough pump skid in the assembly hall.

We can leave the rough pump skid at ground level, but would need a long vacuum line. Need 208VAC source and long extension line.

The portable turbo cart and spec will be rigged onto the platform.

Vacuum pumpdown and degassing and leak checking will take a while.

 

IP8 Valvebox: We will do a mass spec leak check once the valvebox arrives, to check if transport was ok.: Do we land it at 1008 or 1005R.

1008: If no space, will need to leave outside and tarp.

1005R: Make some room in 1005R Roll up door.

 

 

SPACE SHARING:

Solenoid valve box: Current lead side: We will be competing for time to install the LHe supply/return lines with the install of the current lead power cables/termination box, unless the termination box will not go in until after the ROLL-IN, when they do the final cross-connect of the water cooled busses.

Solenoid valve box: Insulating vacuum turbo side: Hardware/turbo can be installed.

 

Below platform floor grating work: Cryo has some piping to install.

Platform cable tray install may have to wait for this?

 

IP8 Valvebox:

Cryo-ETs and Cryo-MTs needs coordination among ourselves.

 

IP8 HALL WORK

Strategy would be to connect the cryo controls first to allow trouble shooting and checkout while cryo mechanical do the cross connect install.

 

Thanks,

Roberto