<html><body><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000"><div>Dear all,<br></div><div><br data-mce-bogus="1"></div><div>I agree with Volker, this was great to see. Cooling to below 5K went smoothly this week. Now on to<br data-mce-bogus="1"></div><div>the safe 100 A testing!!! I hope to see a nice mail appear tomorrow on the success.<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div>Congratulations, we are nearly there!<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div>Best regards, Rolf<br data-mce-bogus="1"></div><div><br></div><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><b>From: </b>"burkert" <burkert@jlab.org><br><b>To: </b>kashy@jlab.org<br><b>Cc: </b>"Ruben Fair" <rfair@jlab.org>, ghoshal@jlab.org, "Glenn Young" <gyoung@jlab.org>, josephm@jlab.org, "Patrizia Rossi" <rossi@jlab.org>, "Rolf Ent" <ent@jlab.org>, hogan@jlab.org, "Hugh Montgomery" <mont@jlab.org>, "lung" <lung@jlab.org>, stuart@jlab.org, lassiter@jlab.org, fansler@jlab.org, "Javier Gomez" <gomez@jlab.org>, hallb-engineering@jlab.org, "clas members" <clas_members@jlab.org><br><b>Sent: </b>Thursday, September 7, 2017 4:03:55 PM<br><b>Subject: </b>Re: [Hallb-engineering] [New Logentry] Solenoid Cooldown - Cooling Basically Done<br></div><br><div data-marker="__QUOTED_TEXT__">Dear all,<br><br>Congratulations to this great success. All coils below 5K is a fantastic achievement and in record time!<br>Now on to power up! <br><br>Volker Burkert<br><br>----- Original Message -----<br>From: kashy@jlab.org<br>To: rfair@jlab.org, ghoshal@jlab.org, gyoung@jlab.org, josephm@jlab.org, rossi@jlab.org, ent@jlab.org, hogan@jlab.org, mont@jlab.org, lung@jlab.org, stuart@jlab.org, lassiter@jlab.org, fansler@jlab.org, gomez@jlab.org, hallb-engineering@jlab.org<br>Sent: Thursday, September 7, 2017 3:00:03 PM<br>Subject: [Hallb-engineering] [New Logentry] Solenoid Cooldown - Cooling Basically Done<br><br>Solenoid Cooldown - Cooling Basically Done <br><br><br>Lognumber 3483774 . Submitted by kashy on Thu, 09/07/2017 - 14:55. Logbooks: HBSOLENOID CLOG <br>References: 3483741 - Follow-up Re: Solenoid Cooldown <br><br><br>Congratulations to ALL, A major step has been completed today. <br>The Solenoid is cold and we have Liquid Helium in both the lead reservoir and Magnet reservoir! <br>I will continue to tune the control loops to improve stability. <br>Lead flow controllers were replaced this morning and are working perfectly. <br><br>One major sticking point to powering the magnet is completion of the Hi-Pot test. <br>At present we have a team looking at a low resistance to ground of the water cooled lead "A". <br><br>The superconducting liquid probes have been disconnected and are being investigated. <br>Helium flow from ESR has reduced from ~10g/s to ~6g/s <br><br>_______________________________________________<br>Hallb-engineering mailing list<br>Hallb-engineering@jlab.org<br>https://mailman.jlab.org/mailman/listinfo/hallb-engineering<br></div></div></body></html>