sPHENIX discussion of the superconducting solenoid

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

Hi,

 

I forgot to mention that Brian Streckenbach has sent emails and asked multiple times about the signal

cables (from voltage taps … strain gauge … to the Cryo group’s signal/temperature-sensor cables) to make

sure that the penetration on the west wall has enough hole dimension to hold all the signal cables (between

1008B and 1008IR).

 

Kin

 

From: Glenn Young <glennyoung82251 AT gmail.com>
Sent: Thursday, September 24, 2020 4:01 PM
To: Yip, Kin <kinyip AT bnl.gov>
Cc: sphenix-magnet-l AT lists.bnl.gov
Subject: Re: water-cooled-bus

 

Dear Kin,

OK, thanks for the details.

I figured that you had asked PK in order to get going on the AC wiring ;-)

Regards, Glenn

 

On Thu, Sep 24, 2020 at 3:55 PM Yip, Kin <kinyip AT bnl.gov> wrote:

Hi Glenn,                                                                                                                                                                                                                                           

 

Those WCB or 535 MCM cables are all DC (Direct Current) .      From the top of my head, the AC parts are                                                                                                                                                                                                                                            

--- our electrician group (PK Feng’s group who will need to provide those ~230 V, 480 V etc.) that the power supply and other racks draw power from --- this is to be done;

   My asking PK to take look is also a way to ask him to realize what he’s needed to do for us. 

--- the signal cables (which include the voltage taps, strain gauge & its temperature sensors, 4 linear pots)

 

We can do mostly the 303400 part as everything is there.  The strain gauge (say) signals are connected to the magnet in two long cables and if the magnet platform is not

built, we won’t bother pulling the cable.   The voltage tap is slightly different as Carl has a box on the platform (from there signal cables go to the Magnet) but the box

is still on the platform.  

 

I suspect that we can’t do much 303500 and 303600 for a while.

 

Kin

 

From: Glenn Young <glennyoung82251 AT gmail.com>
Sent: Thursday, September 24, 2020 3:35 PM
To: Yip, Kin <kinyip AT bnl.gov>
Cc: sphenix-magnet-l AT lists.bnl.gov
Subject: Re: water-cooled-bus

 

Dear Kin,
This helps to identify which white pipe has which service or bus.
What we were asking but I think the audio was not good, is whether th3 535 MCM cables we saw were AC or DC. I would not see the connection except to flags on one of the cabinets.

It would help to discuss what is involved in these tasks to "Pull and Terminate AC/DC power cable and signal cable" in

Activity 303400  in 1008 B

Activity 303500  from 1008 B to 1008 IR

Activity 303400  in 1008 IR

i.e. what of this is AC power and control cable for the power supply or other parts of the control system
There is a total of 1400 hour labor on those three activities

 

I think the water cooled bus termination is covered under

activity 304500-304800, which addresses the 1008 B and 1008 IR ends.
Thanks, Glenn

 

On Thu, Sep 24, 2020 at 1:24 PM Yip, Kin <kinyip AT bnl.gov> wrote:

Hi,

 

Maybe, I couldn’t hear you too well in Bluejeans …

 

We are making use of the existing water-cool-bus (WCB).  They exist from the west wall to the 1008B terminals.  In the PDF (which I attached but it’s from our site https://brookhavenlab.sharepoint.com/:b:/s/sPHENIXMagnet/External/ETmMAsNPjO9PsIvK14YchgUB73ZbTezdfe_s_Y_ho-1bTQ), at the right-bottom, you see

the WCB terminals (2+ 2-) being connected to the 535 MCM cables.                                                                                      

 

I took 4 of Paul Giannotti’s old slides in the powerpoint where you can see the existing WCB.

 

What is left is the WCB from the west wall to the magnet platform to be connected to the Magnet (the last bit is also by 535 MCM cables).

 

Kin