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Re: [Star-fst-l] Found a new way to seperate t-board connectors

From: Zhenyu Ye <yezhenyu2003 AT gmail.com>
To: flemming videbaek <videbaek AT bnl.gov>
Cc: Star-fst L <star-fst-l AT lists.bnl.gov>
Subject: Re: [Star-fst-l] Found a new way to seperate t-board connectors
Date: Fri, 9 Apr 2021 08:49:18 -0500

The walls are permanently glued together. So they can’t be removed.

The idea of using one special box for testing with the end way removed means
for every testing step Shenghui needs to transfer the module from the storage
box to the special box for testing, then move the module back. This
introduces risks to the module. I would be more concerned with these than the
connector, because the latter I think we have a solution - we can use the
tool as is for module installation, and finding the tool with the right
length for module assembly testing - in the worst case we can cut the handles
of the tool.

Zhenyu

> On Apr 9, 2021, at 8:01 AM, videbaek <videbaek AT bnl.gov> wrote:
>
> Let me chime in too.
>
> The number of times that cable are connected/disconnected has to be
> minimized.
> Of course for the production it has to be done 2 (3) times - for the apv
> testing and after inner /outer
> sensors mounting. So why not have one 'special box (w/o walls) for holding
> a modules during this mounting, and testing, and put it back in regular
> transport box for moving back/forth techs and storage.
> I think this will reduce the overall risks.
>
> Flemming
>
>
>
>
>
> On 2021-04-09 08:21, Visser, Gerard wrote:
>> hi Shengui,
>> That doesn't look like the same tool. ??
>> But, would it anyway have fit if you came at it from the other
>> side (i.e. on the right in this picture?).
>> I would repeat my concern that unplugging of the hybrids from T
>> board without some way to apply the force directly to the connector
>> body, is a very high risk. If we can avoid ever doing that to a
>> production hybrid that would be much better. I think it is certainly
>> worth a few days delay to resolve this. (My opinion anyway.)
>> Sincerely,
>> Gerard
>> -------------------------
>> From: Zhang, Shenghui <shenghui AT uic.edu>
>> Sent: Friday, April 9, 2021 4:37 AM
>> To: Visser, Gerard <gvisser AT indiana.edu>; apotosto AT bnl.gov
>> <apotosto AT bnl.gov>
>> Cc: Star-fst L <star-fst-l AT lists.bnl.gov>
>> Subject: Re: [Star-fst-l] Found a new way to seperate t-board
>> connectors
>> Hi Mike and all,
>> I tried to use the new way to do unplugging of production hybrids and
>> found the tool couldn't fit in the storage box shown at the
>> attachment. So, I think that we couldn't use the new way during the
>> module assembly.
>> Best,
>> Shenghui
>> -------------------------
>> From: Star-fst-l <star-fst-l-bounces AT lists.bnl.gov> on behalf of
>> Aschenauer Elke-Caroline <elke AT bnl.gov>
>> Sent: Wednesday, April 7, 2021 10:04 AM
>> To: Visser Gerard <gvisser AT indiana.edu>
>> Cc: Star-fst L <star-fst-l AT lists.bnl.gov>; Sun, Xu <xusun87 AT uic.edu>
>> Subject: Re: [Star-fst-l] Found a new way to seperate t-board
>> connectors
>> Dear Mike, All,
>> indeed awesome find, I agree with Gerard, let's buy them for all
>> places we do any plugging/unplugging of production hybrids.
>> Cheers elke
>>> On Apr 7, 2021, at 10:59, Visser, Gerard <gvisser AT indiana.edu>
>>> wrote:
>>> Hi Mike - wow - awesome!
>>> This is an extremely good find, for reducing what I think is one of
>>> the highest risk areas in FST.
>>> I would strongly suggest that those doing any
>>> plugging/unplugging of production hybrids anywhere, stop work until
>>> they procure this exact tool. It will be worth any delay that
>>> incurs. Of course, not my decision, only recommending here.
>>> I am attaching here your two photographs so others on list can see.
>>> Thanks, sincerely,
>>> Gerard
>>> -------------------------
>>> From: Ye, Zhenyu <yezhenyu AT uic.edu>
>>> Sent: Wednesday, April 7, 2021 10:51 AM
>>> To: Capotosto, Michael <capotosto AT bnl.gov>
>>> Cc: Visser, Gerard <gvisser AT indiana.edu>; Sun, Xu <xusun87 AT uic.edu>
>>> Subject: Re: Found a new way to seperate t-board connectors
>>> Hi Mike,
>>> Very nice!
>>> Zhenyu
>>>> On Apr 7, 2021, at 9:42 AM, Capotosto, Michael <capotosto AT bnl.gov>
>>> wrote:
>>>> Hey guys,
>>>> Hope all is well.
>>>> Had a thought pop into my head while I was staring at the half
>>> ring assembly, thought I’d share…
>>>> These snap ring pliers fit perfectly into the 2mm holes in the
>>> hybrid side Nicomatic connectors. They provide enough grip to easily
>>> un-mate the connectors, inserting the pliers as shown. The same goes
>>> for the outer. It has enough friction to gently wiggle the connector
>>> free.
>>>> --Mike
>>>> <Removing module ffrom t-board.jpg><Snap ring pliers.jpg>
>>> <Removing module ffrom t-board.jpg><Snap ring
>>> pliers.jpg>_______________________________________________
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>
> --
> Flemming Videbaek
> senior scientist
> videbaek @ bnl.gov
> Brookhaven National Lab
> Physics Department
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> Upton, NY 11973
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Re: [Star-fst-l] Found a new way to seperate t-board connectors , (continued)