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It was a different error than last time; it was the cRIO chassis instead of the modules.</div>
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It also failed while there wasn't any beam, so it could have been a power surge (it looks like from the log book there may be a power issue with magnet heaters).</div>
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<b>But</b> despite that, I think it'd be worth looking into shielding since throughout the system's lifetime, it's gone down a few times during beam operations while other upstream systems have been fine.<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Brian Eng <beng@jlab.org><br>
<b>Sent:</b> Thursday, March 24, 2022 10:43 AM<br>
<b>To:</b> Tyler Lemon <tlemon@jlab.org>; Valery Kubarovsky <vpk@jlab.org>; dsg-hallb_rich@jlab.org <dsg-hallb_rich@jlab.org><br>
<b>Subject:</b> Re: RICH-I interlock n2 vol cRIO failed</font>
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Since this is the second time a cRIO has failed in this area should we look into shielding?</div>
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I'm assuming it's the same error as the last time, but that needs to be confirmed.</div>
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<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> dsg-hallb_rich <dsg-hallb_rich-bounces@jlab.org> on behalf of Tyler Lemon <tlemon@jlab.org><br>
<b>Sent:</b> Thursday, March 24, 2022 9:29 AM<br>
<b>To:</b> Valery Kubarovsky <vpk@jlab.org>; dsg-hallb_rich@jlab.org <dsg-hallb_rich@jlab.org><br>
<b>Subject:</b> Re: [dsg-hallb_rich] RICH-I interlock n2 vol cRIO failed</font>
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<div dir="ltr" style="color:rgb(0,0,0); background-color:rgb(255,255,255)">Hi Valery,</div>
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<div dir="ltr" style="color:rgb(0,0,0); background-color:rgb(255,255,255)">I checked the cRIO remotely and couldn’t connect to it. I then went to Hall B and checked it and it <span style="font-size:inherit">looks like something happened with the cRIO and it
has a boot error. </span></div>
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<div dir="ltr" style="color:rgb(0,0,0); background-color:rgb(255,255,255)">It’ll need to be swapped for a spare so I’ll start that process <span id="x_x_ms-outlook-ios-cursor"></span></div>
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<div dir="ltr" style="color:rgb(0,0,0); background-color:rgb(255,255,255)">-Tyler</div>
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<div id="x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Tyler Lemon <tlemon@jlab.org><br>
<b>Sent:</b> Thursday, March 24, 2022 9:10:32 AM<br>
<b>To:</b> Valery Kubarovsky <vpk@jlab.org><br>
<b>Subject:</b> Re: RICH-I interlock</font>
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No, I'll take a look at it and let you know.</div>
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-Tyler<br>
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<div id="x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Valery Kubarovsky <vpk@jlab.org><br>
<b>Sent:</b> Thursday, March 24, 2022 8:43 AM<br>
<b>To:</b> Tyler Lemon <tlemon@jlab.org><br>
<b>Subject:</b> RICH-I interlock</font>
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Tyler,</div>
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I noticed that the nitrogen volume interlock heartbeat is frozen.</div>
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Is it normal?</div>
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Thanks,</div>
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Valery</div>
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