[Dsg-halla_magnets] wiring on CLEO CL turret

[Brian Eng]

Because of the small ID of the tube between the smaller and larger flanges I don't see any better/faster way to disassemble the turret.

There's really only 2 choices, de-solder/cut at the small flanges end or cut at the large flange end. Cutting will always be faster as there won't be any time spent removing the heat shrink to de-solder at the connector.

In either case as long as they're labeled (color alone is no good due to duplicates) it should be fine to re-solder.

The only suggestion I would have if they are cutting are to try and not do it all at the same location. As the wires will need to have heat shrink applied over the new solder joint it will increase the overall diameter. It would be better to spread this out over a larger area. Have some of the cuts closer to the turret while others are cut closer to the flange. It is also another backup as to which wire went where.

________________________________
From: Steven Lassiter <lassiter at jlab.org>
Sent: Thursday, June 16, 2022 6:04 PM
To: Brian Eng <beng at jlab.org>
Subject: Re: wiring on CLEO CL turret

Hi,

 No, Hall A is not just going to randomly cut the wires/cables.

What has been discussed with them is to label the cables on both sides of the cut. The cut would be near the feed thru but would leave sufficient amount of wires to place a cable label and be able to ID the individual wires by color or other means.

After the mechanical work on the CL turret is done the wires coming from the magnet can then be re-solder to the feed thru replacing one wire at a time that match the cable/wire color and pin documentation.

This would be the most expeditious way of removing the feed thru flange and allowing the mechanical work to begin, rather then de-soldering each pin while the fed thru flange is still attached to the turret port.

There is sufficient cable length inside the port to preform this I am told.

While the mechanical work is ongoing, the removed feed thru flange could then have the inside wires de-soldered and prep for re-soldering ( of course photos and documentation of the wire colors would take place before de soldering).

If there are better methods that would not take days to accomplish on removing the feed thru flange, they would be most appreciated.

thanks
Steven



________________________________
From: Brian Eng <beng at jlab.org>
Sent: Thursday, June 16, 2022 5:16 PM
To: Steven Lassiter <lassiter at jlab.org>
Cc: dsg-halla_magnets at jlab.org <dsg-halla_magnets at jlab.org>
Subject: Re: wiring on CLEO CL turret

Hi Steven,

Wait, so Hall A is going to just cut the wires? Where? At the inside of the larger flange? If so, I'm assuming they're labeling all the wires prior? As long as it's labeled properly Mindy can do the re-wiring.

I would have labeled the wires then de-soldered at the connectors themselves on the smaller flanges. While taking longer than just cutting them it both preserves the wire length as well as not introducing another solder joint along the cable path.

For sure any work we do on it we'd want to have completed prior to it being installed as soldering those small wires on a platform sounds much more difficult than if it's at ground level.

________________________________
From: Steven Lassiter <lassiter at jlab.org>
Sent: Thursday, June 16, 2022 4:36 PM
To: Brian Eng <beng at jlab.org>
Subject: Re: wiring on CLEO CL turret

Thanks Brian

The turret can be moved back to the Test lab after Hall A has completed cleaning and welding on it - in hall A. The cables have to be cut to allow for this work to proceed.

The re-wiring can be done anytime after that. It needs to be completed sooner rather then later so that hot check out of the controls and verification of the cabling/wiring/ sensors can proceed before cool down starts.

It would be best to have the re-wiring done before the CL turret is mechanically installed on top of the magnet, but that is not a hard requirement, one would just have to work on the platform doing the wire re-connection for ~120 wires.

If there are suggestions on how best to cut the wires please let Hall A know before they actual cut the cables.

Thanks
Steven

________________________________
From: Dsg-halla_magnets <dsg-halla_magnets-bounces at jlab.org> on behalf of Brian Eng <beng at jlab.org>
Sent: Thursday, June 16, 2022 4:28 PM
To: Pablo Campero Rojas <campero at jlab.org>; dsg-halla_magnets at jlab.org <dsg-halla_magnets at jlab.org>
Subject: Re: [Dsg-halla_magnets] wiring on CLEO CL turret

Hi Steve,

We're still working through scheduling with other projects, but tentatively it looks like we'll be able to help.

A few quick questions:
– Can the turret be moved to EEL/125 (if not, the TEDF high bay)?
– When does this (in particular the de-cabling) need to be completed by?

________________________________
From: Pablo Campero Rojas <campero at jlab.org>
Sent: Thursday, June 16, 2022 4:19 PM
To: dsg-halla_magnets at jlab.org <dsg-halla_magnets at jlab.org>; Brian Eng <beng at jlab.org>
Subject: Fw: wiring on CLEO CL turret

Hello Steven,

I let Brian answer since he has been looking into this matter.

--Pablo
________________________________
From: Steven Lassiter <lassiter at jlab.org>
Sent: Thursday, June 16, 2022 3:55 PM
To: Pablo Campero Rojas <campero at jlab.org>
Subject: wiring on CLEO CL turret

Hello Pablo,

 Any word on if the DSG will be able to help out on the CLEO Current lead turret wiring?

Steven
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