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Re: CDC Interconnect Concepts - EDAC
Dear Gerard -
thanks for your comments. It would indeed be useful to do such a search,
however, I also suspect that neither Yves nor I are the optimal people to
do this. We don't regularly work with connectors and probably don't have
catalogs available to help us search. We essentially (as I suspect most
of us do) go look in the drawers in our labs to see what we can find, and
then ask people for suggestions.
The conenctor you initially suggested is available, there is just a very long
lead-time on it. I suspect that a good starting point would be to ask what
people are using in the FDC. Is there a connector that gets the high-voltage
on the wires, and if so, what is it.
Beyond this, what other connectors do people know about so that we
would have some idea where to look? Sadly, this is somewhat out of our
baliwick, so some hints would be useful.
thanks - Curtis
On Wed June 11 2008, Gerard Visser wrote:
> Hi,
> Yes this is fine for my schedule as well. Please send dialing info when
> you have it.
> Yves, also note I certainly don't claim now (nor back then) to have
> exhaustively surveyed the possible connectors nor inquired for
> availability. For instance, my suggested part number today was simply an
> attempt to address the voltage rating issue, it is not necessarily the
> optimal choice. It is also true, this whole style of connector,
> developed probably in the early 50's, is falling out of favor, so may be
> hard to obtain. It will be good if the CDC group can make a thorough
> study of the options, including for instance if the 1800VAC connectors
> are just not an option, in which case all is not lost but more work may
> be needed to certify the safety of the design.
> I believe that the connector characteristics we need are:
>
> - 24 signal pins, 2+ ground pins, as many unused pins as may be.
> - hi-pot withstanding (by our own test) to at least 150% of CDC bias
> voltage, including feasible pcb routing
> - approvability by the safety review committee
> - gas tight, noncontaminating (probably means you build up the seal
> with epoxy or something)
> - support of pcb board directly by connector would be nice
> - small enough (not a serious constraint given the footprint of 24
> straws on the endplate)
> - anything else??
>
> Thanks,
>
> Gerard
>
> Fernando J. Barbosa wrote:
> > Hi Yves,
> >
> > It works for me. I am also CCing Tim and Slava in case they want to join.
> >
> > Regards,
> > Fernando
> >
> >
> >
> >
> > Yves Van Haarlem wrote:
> >> Hi All,
> >>
> >> About the phone conference. Curtis is at JLab next week and he can
> >> meet all Wednesday, Gerard and me could phone in. So what about having
> >> a meeting next week Wednesday at 1pm (first iteration)?
>
--
Professor Curtis A. Meyer Department of Physics
Phone: (412) 268-2745 Carnegie Mellon University
Fax: (412) 681-0648 Pittsburgh PA 15213-3890
cmeyer@ernest.phys.cmu.edu http://www.curtismeyer.com/