[Dsg-hallc_nps] Procurement for cabling materials

[Aaron Brown]

Hi Brad,

Thanks for the clarification.
We can go ahead an put in the PR for the Radiall connectors, crimpers, and insertion tool.
We'll let you know when we've submitted it for your signature.

We are still waiting to receive an official quote for the cable from General Wire, but once we get that we'll submit that PR as well.

Thanks,
Aaron
________________________________
From: Brad Sawatzky <brads at jlab.org>
Sent: Thursday, August 13, 2020 12:03 AM
To: Aaron Brown <ambrown at jlab.org>
Cc: dsg-hallc_nps at jlab.org <dsg-hallc_nps at jlab.org>; Patrizia Rossi <rossi at jlab.org>
Subject: Re: [Dsg-hallc_nps] Procurement for cabling materials

Hi Aaron,

For 7030 cards there are 36 independent HV channels, 3 returns, and a
safety-loop interlock.  That is 40 conductors.  A couple extra returns
certainly wouldn't hurt so the 42-conductor cable should work well.

We have no plans to buy 48 channel modules at this time.

The safety-loop will need to be exposed at the NPS end in some fashion.
We should talk about how that might be implemented in a future meeting.

The lead times you mention below should be no problem.  We can arrange
for Tech staff support as needed.

-- Brad

On Wed, 12 Aug 2020, Aaron Brown wrote:

> Hello Brad,
> We are ready to procure the wires to make the 140' multi-conductor cables
> for NPS.
> We would like to know just how many internal conductors will be needed, 42
> or 52?
> We have received a price for the 42-conductor wire (which can be used for
> the 36 channel CAEN modules) of $4.45/ft for 6000 ft. of wire.
> We would need to  get a price for the 52-conductor wire. This would be for
> modules that have 48 channels, if in the future you want to use such
> modules.
> At the moment, I believe that all modules to be used will be the 36 channel
> type so the 42-conductor wire should be sufficient, is this correct?
> There is a lead time of 4 to 5 weeks for the wire.
> In regards to the length of the wire, we are investigating if the
> manufacturer (General Wire) can cut the wire to a specified length.
> If this is possible, we would purchase 34 142' spools.
> If the manufacturer cannot cut the wire to length for us, then we would
> purchase six 1000' spools and Hall C technical staff would need to cut the
> wire to length of 142' (leaving ~2 ft. extra for each wire for cable
> fabrication).
> We already have a quote from CAEN for the 52-pin Radiall connectors (40
> connectors totaling $17,587).
> There is a 12 week lead time for the connectors.
> While waiting for a response from the French engineering team regarding the
> SAMTEC connectors, we are researching alternatives that will work for the
> operating voltage of 1100 V.
> If you have any questions or concerns, please feel free to reach out via the
> mailing list.
> Best regards,
> Aaron Brown

--
Brad Sawatzky, PhD <brads at jlab.org>  -<>-  Jefferson Lab / Hall C / C111
Ph: 757-269-5947  -<>-  Fax: 757-269-5235  -<>- Pager: brads-page at jlab.org
The most exciting phrase to hear in science, the one that heralds new
  discoveries, is not "Eureka!" but "That's funny..."   -- Isaac Asimov
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/dsg-hallc_nps/attachments/20200813/a50dfb5c/attachment-0001.html>