<html><body><div style="font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000"><div data-marker="__QUOTED_TEXT__"><div style="font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000" data-mce-style="font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000;"><div><div style="font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000" data-mce-style="font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000;"><div>Hello Marco,<br></div><br><div>Thank you for sending the interlock cable information. </div><br><div>For the feedthroughs for the new cable bundles mentioned today for the nitrogen body, we have already submitted the PR.</div><br><div>However, we will need more:</div><div><em>1.) four-wire RTD cable and </em><em>three-wire humidity sensor cable </em>- Once ordered, it will take about one week to be delivered at JLab.<br></div><div><em>2.) temperature and humidity sensors.</em> - We should have enough humidity and temperature sensors. However, we will need to verify the amounts we have on hand.<em><br></em></div><div><em>3.) PCBs to mount sensors.</em> - If we cannot easily order or find more PCBs to mount the sensors, we can find alternative boards to epoxy the sensors too.</div></div><div style="font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000" data-mce-style="font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000;"><br data-mce-bogus="1"></div><div style="font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000" data-mce-style="font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000;">You mentioned the cable lengths from relevant locations to the 15-pin feedthrough could be customized. Could you send us these cable lengths so Mindy can begin to fabricate the cables as soon as we receive the components?</div><div style="font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000" data-mce-style="font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000;"><br data-mce-bogus="1"></div><div style="font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000" data-mce-style="font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000;">Best regards,</div><div style="font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000" data-mce-style="font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000;">Tyler<br><br><br><br><hr id="zwchr"><div><b>From: </b>"Marco Contalbrigo" <mcontalb@fe.infn.it><br><b>To: </b>"Tyler Lemon" <tlemon@jlab.org><br><b>Cc: </b>"dsg-rich" <dsg-rich@jlab.org><br><b>Sent: </b>Friday, October 13, 2017 11:07:16 AM<br><b>Subject: </b>Interlock sensors<br></div><br><div>Dear Tyler,<br>as anticipated at the meeting, here is the list of<br>sensors we have in mind.<br><br>Each PCB station mounts 2 temperature (T) and 2<br>humidity (H) sensors. I would suggest we cable<br>all of them but connect only one H+T pair per<br>station to the cRio, while keeping the second<br>as spare. Should a sensor have a problem, we<br>would need an access to exchange it with his<br>spare at the cRio.<br><br>One option could be to have 4 cables in the<br>short (internal RICH) section and only 2 in the<br>outer (Hall) section. This implies however to<br>access the connectors at the RICH position to<br>be able to exchange the sensors.<br><br>-----------------<br>Electronic Panel (EPanel)<br>-----------------<br>Short section: from EPanel to patch panels<br>Lenght as the average of the power supply<br>cables: 6 m.<br><br>Long section: from patch panel to cRio<br>patch panel A: 50 feet<br>patch panel B: 65 feet<br><br>Priority is cooling monitor, electronic healty<br>and FTOF heat load control. The mimimum would<br>be 6:<br><br>1 for inlet<br>1 for outlet<br>2 on the electronics<br>1 outside the cover<br>1 on the FTOF<br><br>It is clear to have at leat 2 more (for a total<br>of 8) would be worth, to have a better control<br>of possible hot spots.<br><br>-------------------<br>N2 volume<br>-------------------<br>Short section: internal to the N2 volume, from<br>relevant locations to the 15-pin feedthrough<br>Lengths can be customized (see below).<br><br>Long section: from feed-through to the cRio.<br>Lenghts as for the patch panels.<br><br>We do not need to pass by the patch panels.<br>Priority is to monitor the inner volume and<br>control the aerogel. The minimum would be 6:<br><br>2 for inlet (3.5 m)<br>2 on the aerogel (4 m) <br>1 for outlet (1 m)<br>1 close to the EPanel (5 m)<br><br>Again, to have 2 more could be wise.<br><br>All together, the number would be 6+6=12 stations<br>(one sensor per type connected) as minimum, with<br>8+8=16 as optimum, given the cRIO capability.<br><br>On top of all, we should not forget to calibrate<br>the sensors before installation.<br><br>As anticipated, Luca Barion from INFN-FE is<br>supposed to stay at JLab in one week from now.<br>He could join the effort of sensor cabling<br>and calibration if this helps.<br><br>Thanks, Marco.</div></div></div></div><br></div></div></body></html>