<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"><div><div style="font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000"><div>Hello Probir,<br></div><br><div>Brian's code using the fixed voltage does appear to be working. </div><br><div>As Brian previously mentioned, we are still waiting for any temperature spike to confirm that the system can automatically recover with the code currently deployed. We have yet to see any of the temperature spikes we are monitoring for, so it is hard to say whether the error just hasn't happened (since we know there can be long stretches between the errors) or the fixed voltage code added is preventing/has solved the error.<br></div><br><div>I will make the modifications to the Solenoid LV cRIO program to implement the fixed voltage for Cerenoxes. As you requested, the maximum fixed voltage will be 5 mV.<br></div><br><div>Best regards,<br></div><div>Tyler<br></div><br><hr id="zwchr"><div><b>From: </b>"Probir Ghoshal" <ghoshal@jlab.org><br><b>To: </b>"Brian Eng" <beng@jlab.org>, "Pablo Campero Rojas" <campero@jlab.org><br><b>Cc: </b>"Tyler Lemon" <tlemon@jlab.org>, "Nicholas Sandoval" <sandoval@jlab.org>, "Ruben Fair" <rfair@jlab.org>, "Ramakrishna Bachimanchi" <bachiman@jlab.org>, "Renuka Rajput-Ghoshal" <renuka@jlab.org><br><b>Sent: </b>Friday, May 26, 2017 10:13:37 AM<br><b>Subject: </b>Re: 32K issues - update ?<br></div><br><div>Hi Brian, Pablo,<br><br>Could you please confirm that the CODE finally deployed on torus (so called Brian's code) is working successfully with 15 mV max.!<br>Second, if that is the case, could you please deploy the same on solenoid as well but to 5 mV max for solenoid.<br><br>Thanks and regards<br><br>Probir<br><br><br><br>----- Original Message -----<br>From: "Probir Ghoshal" <ghoshal@jlab.org><br>To: "Ramakrishna Bachimanchi" <bachiman@jlab.org>, "Brian Eng" <beng@jlab.org><br>Cc: "Tyler Lemon" <tlemon@jlab.org>, "Nicholas Sandoval" <sandoval@jlab.org>, "Pablo Campero Rojas" <campero@jlab.org>, "Ruben Fair" <rfair@jlab.org><br>Sent: Monday, May 15, 2017 4:30:27 PM<br>Subject: Re: 32K issues - update ?<br><br>Rama,<br><br>Please suggest the fixed voltage required for Solenoid, as you have suggested in the past needed to be ~5 mV instead of 15 mV as we have used for torus.<br><br>Thanks Brian and Rama for getting this sorted (seemed) finally...!<br><br>Regards<br><br>Probir<br>----- Original Message -----<br>From: "Ruben Fair" <rfair@jlab.org><br>To: "Brian Eng" <beng@jlab.org><br>Cc: "Tyler Lemon" <tlemon@jlab.org>, "Probir Ghoshal" <ghoshal@jlab.org>, "Ramakrishna Bachimanchi" <bachiman@jlab.org>, "Nicholas Sandoval" <sandoval@jlab.org>, "Pablo Campero Rojas" <campero@jlab.org><br>Sent: Monday, May 15, 2017 4:26:47 PM<br>Subject: Re: 32K issues - update ?<br><br>Ok - so we keep it going for another few weeks? <br><br><br><br>From: "Brian Eng" <beng@jlab.org> <br>To: "Ruben Fair" <rfair@jlab.org> <br>Cc: "Tyler Lemon" <tlemon@jlab.org>, "Probir Ghoshal" <ghoshal@jlab.org>, "bachiman" <bachiman@jlab.org>, "Nicholas Sandoval" <sandoval@jlab.org>, "Pablo Campero Rojas" <campero@jlab.org> <br>Sent: Monday, May 15, 2017 4:25:38 PM <br>Subject: Re: 32K issues - update ? <br><br>At the very least it performs similarly to the previous setup, i.e. it isn't any worse than using a target power. <br><br>I'd still like to have seen it get an error and recover by itself though. <br><br>> On May 15, 2017, at 4:12 PM, Ruben Fair <rfair@jlab.org> wrote: <br>> <br>> Tyler, <br>> <br>> Does this suggest strongly that we should move to a fixed voltage source for all the Cernox sensors? <br>> <br>> Ruben <br>> <br>> From: "Tyler Lemon" <tlemon@jlab.org> <br>> To: "Ruben Fair" <rfair@jlab.org> <br>> Cc: "Brian Eng" <beng@jlab.org>, "Probir Ghoshal" <ghoshal@jlab.org>, "bachiman" <bachiman@jlab.org>, "Nicholas Sandoval" <sandoval@jlab.org>, "Pablo Campero Rojas" <campero@jlab.org>, "dsg-hallb magnets" <dsg-hallb_magnets@jlab.org> <br>> Sent: Monday, May 15, 2017 4:02:11 PM <br>> Subject: Re: 32K issues - update ? <br>> <br>> Hello Ruben, <br>> <br>> The fixed voltage source deployed on April 21, 2017 is still deployed and running. <br>> <br>> There was one instance on 4/29/2017 when a Cerenox jumped to 325 K, but after one second it automatically corrected itself to a normal reading. <br>> <br>> There have been no other instances of a Cerenox jumping to 325 K since. <br>> <br>> Regards, <br>> Tyler <br>> <br>> From: "Ruben Fair" <rfair@jlab.org> <br>> To: "Brian Eng" <beng@jlab.org>, "Tyler Lemon" <tlemon@jlab.org> <br>> Cc: "Probir Ghoshal" <ghoshal@jlab.org>, "Ramakrishna Bachimanchi" <bachiman@jlab.org>, "Nicholas Sandoval" <sandoval@jlab.org>, "Pablo Campero Rojas" <campero@jlab.org> <br>> Sent: Monday, May 15, 2017 3:56:04 PM <br>> Subject: 32K issues - update ? <br>> <br>> Brian, Tyler, <br>> <br>> What is the update on misbehaving sensors? <br>> <br>> Are you still employing the constant voltage approach? <br>> <br>> Regards <br>> <br>> Ruben <br>></div></div></div></div><br></div></div></body></html>