[Dsg-rich] Interlock sensors - internal lengths of last two cables

[Marco Contalbrigo]

Hi Tyler,
I would like to fix them tomorrow after speaking with Sandro and
Marco at JLab. See you, Marco.

On Wed, 1 Nov 2017, Tyler Lemon wrote:

> Hello Marco Contalbrigo,
> 
> We still do not have the lengths for inside RICH the last two nitrogen volume interlock
> sensor cable bundles.
> 
> We cannot finish these last two cable bundles unless we know how long the cables should be.
> 
> Best regards,
> Tyler
> 
> 
> _____________________________________________________________________________________________
> From: "Tyler Lemon" <tlemon at jlab.org>
> To: "Marco Contalbrigo" <mcontalb at fe.infn.it>
> Cc: "dsg-rich" <dsg-rich at jlab.org>
> Sent: Wednesday, October 25, 2017 3:00:34 PM
> Subject: [Dsg-rich] Interlock sensors - internal lengths of last two cables
> 
> Hello Marco,
> 
> The set of six interlock cables with the lengths you provided to be used in the nitrogen body
> are almost complete.
> 
> The six almost ready are:
> 2 for inlet (3.5 m)
> 2 on the aerogel (4 m)
> 1 for outlet (1 m)
> 1 close to the EPanel (5 m)
> 
> We do not have the internal lengths for the remaining two cables (for a total of 8 cables for
> the nitrogen body).
> 
> Please let us know these lengths so the cables can be fabricated.
> 
> Best regards,
> Tyler
> 
> _____________________________________________________________________________________________
> From: "Marco Contalbrigo" <mcontalb at fe.infn.it>
> To: "Tyler Lemon" <tlemon at jlab.org>
> Cc: "dsg-rich" <dsg-rich at jlab.org>
> Sent: Friday, October 13, 2017 11:07:16 AM
> Subject: Interlock sensors
> 
> Dear Tyler,
> as anticipated at the meeting, here is the list of
> sensors we have in mind.
> 
> Each PCB station mounts 2 temperature (T) and 2
> humidity (H) sensors. I would suggest we cable
> all of them but connect only one H+T pair per
> station to the cRio, while keeping the second
> as spare. Should a sensor have a problem, we
> would need an access to exchange it with his
> spare at the cRio.
> 
> One option could be to have 4 cables in the
> short (internal RICH) section and only 2 in the
> outer (Hall) section. This implies however to
> access the connectors at the RICH position to
> be able to exchange the sensors.
> 
> -----------------
> Electronic Panel (EPanel)
> -----------------
> Short section: from EPanel to patch panels
> Lenght as the average of the power supply
> cables: 6 m.
> 
> Long section: from patch panel to cRio
> patch panel A: 50 feet
> patch panel B: 65 feet
> 
> Priority is cooling monitor, electronic healty
> and FTOF heat load control. The mimimum would
> be 6:
> 
> 1 for inlet
> 1 for outlet
> 2 on the electronics
> 1 outside the cover
> 1 on the FTOF
> 
> It is clear to have at leat 2 more (for a total
> of 8) would be worth, to have a better control
> of possible hot spots.
> 
> -------------------
> N2 volume
> -------------------
> Short section: internal to the N2 volume, from
> relevant locations to the 15-pin feedthrough
> Lengths can be customized (see below).
> 
> Long section: from feed-through to the cRio.
> Lenghts as for the patch panels.
> 
> We do not need to pass by the patch panels.
> Priority is to monitor the inner volume and
> control the aerogel. The minimum would be 6:
> 
> 2 for inlet (3.5 m)
> 2 on the aerogel (4 m)
> 1 for outlet (1 m)
> 1 close to the EPanel (5 m)
> 
> Again, to have 2 more could be wise.
> 
> All together, the number would be 6+6=12 stations
> (one sensor per type connected) as minimum, with
> 8+8=16 as optimum, given the cRIO capability.
> 
> On top of all, we should not forget to calibrate
> the sensors before installation.
> 
> As anticipated, Luca Barion from INFN-FE is
> supposed to stay at JLab in one week from now.
> He could join the effort of sensor cabling
> and calibration if this helps.
> 
> Thanks, Marco.
> 
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