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Re: [GlueX] Cable lengths
On Fri, 15 Feb 2008, Matthew Shepherd wrote:
Hi,
that is what I was afraid of that we have lemo on which is very expensive.
I agree that redoing them is than not an option. Indeed the money for
refurbishing the last 300 is in the construction budget.
Actually just as a side remarks can we talk next week on the current
contract we have with IU.
cheers elke
> Date: Fri, 15 Feb 2008 07:49:45 -0500
> From: Matthew Shepherd <mashephe@indiana.edu>
> To: Elke-Caroline Aschenauer <elke@jlab.org>
> Cc: Tim Whitlatch <whitey@jlab.org>, Beni Zihlmann <bzihlman@indiana.edu>,
> Hall-D Calorimetry <halld-cal@jlab.org>
> Subject: Re: [GlueX] Cable lengths
>
>
> Hi Elke,
>
> The cables are two-ended lemo. I think when we last priced these they
> had gone up to something like $20 a connector. JLab paid for both the
> manpower and cable ends to refurbish 2500 cables for the FCAL. (Of
> course, they fit the fADC -- or else we're complete idiots!) That job
> is done and the total cost was probably around $100K. You probably
> don't want to redo them now to make them 14 feet shorter. Note that
> we still need to purchase and refurbish an additional 300. This
> should be in your budget somewhere.
>
> -Matt
>
>
> On Feb 15, 2008, at 7:34 AM, Elke-Caroline Aschenauer wrote:
>
> > On Fri, 15 Feb 2008, Tim Whitlatch wrote:
> >
> > Dear Beni, Matt and Tim,
> >
> > I guess we don't want to do this now, but shortet cables are
> > definetely
> > better for the performance, this is also the reason why we moved to
> > BCal
> > electronics to a new spot.
> >
> > I guess the main issue with shortening the cables is the connectors,
> > what
> > type of connectors are on the ends at the moment. Also does the
> > electronics side fit to the 205MHz FADC connectors?
> >
> > cheers elke
> >
> >
> >
> >> Date: Fri, 15 Feb 2008 07:29:38 -0500
> >> From: Tim Whitlatch <whitey@jlab.org>
> >> To: beni zihlmann <bzihlman@indiana.edu>
> >> Cc: Matthew Shepherd <mashephe@indiana.edu>, halld-cal@jlab.org
> >> Subject: Re: [GlueX] Cable lengths
> >>
> >> Hi Beni
> >>
> >> We can probably take of the slack somewhere. The shorter cables
> >> will not
> >> help with losses? I guess it is not a problem.
> >>
> >> Tim
> >>
> >> beni zihlmann wrote:
> >>> Hi Tim,
> >>> the cable length for the FCAL are in the list with 36 feet 1in.
> >>> 2500 cables are already fabricated all with a length of 50 feet.
> >>> I hope that poses no problem.
> >>>
> >>> cheers,
> >>> Beni
> >>>
> >>> Tim Whitlatch wrote:
> >>>> Chuck has looked at maximum cable lengths for the signal cables for
> >>>> each detector with the new rack layout. This includes an additional
> >>>> 2M loop. It is posted on the wiki under Engineering.
> >>>>
> >>>> Cheers,
> >>>>
> >>>> Tim
> >>>>
> >>>> _______________________________________________
> >>>> GlueX mailing list
> >>>> GlueX@dustbunny.physics.indiana.edu
> >>>> http://dustbunny.physics.indiana.edu/mailman/listinfo/gluex
> >>>>
> >>
> >>
> >>
> >
> > ( `,_' )+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=
> > ) `\ -
> > / '. | +
> > | `, Elke-Caroline Aschenauer =
> > \,_ `-/ -
> > ,&&&&&V Jefferson Lab +
> > ,&&&&&&&&: HALL-D 12C / F381 121-A Atlantic Avenue =
> > ,&&&&&&&&&&; Suite 8 Hampton, VA 23664 -
> > | |&&&&&&&;\ 12000 Jefferson Ave +
> > | | :_) _ Newport News, VA 23606 Tel.: 001-757-224-1216 =
> > | | ;--' | Mail: elke@jlab.org Mobil: 001-757-256-5224 -
> > '--' `-.--. | +
> > \_ | |---' Tel.: 001-757-269-5352 =
> > `-._\__/ Fax.:
> > 001-757-269-6331 -
> > +=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-
> > +=-+
> >
>
>
( `,_' )+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=
) `\ -
/ '. | +
| `, Elke-Caroline Aschenauer =
\,_ `-/ -
,&&&&&V Jefferson Lab +
,&&&&&&&&: HALL-D 12C / F381 121-A Atlantic Avenue =
,&&&&&&&&&&; Suite 8 Hampton, VA 23664 -
| |&&&&&&&;\ 12000 Jefferson Ave +
| | :_) _ Newport News, VA 23606 Tel.: 001-757-224-1216 =
| | ;--' | Mail: elke@jlab.org Mobil: 001-757-256-5224 -
'--' `-.--. | +
\_ | |---' Tel.: 001-757-269-5352 =
`-._\__/ Fax.: 001-757-269-6331 -
+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+