<html><body><div style="font-family: tahoma,new york,times,serif; font-size: 14pt; color: #009900"><div>glenn,<br></div><div><br data-mce-bogus="1"></div><div>patrizia (my CO) advised me to provide the assistance.<br data-mce-bogus="1"></div><div>so, in addition to brian, pablo will be there as well.<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div>amrit<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div><br></div><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><b>From: </b>"Glenn Young" <gyoung@jlab.org><br><b>To: </b>"Amrit Yegneswaran" <yeg@jlab.org>, "Rolf Ent" <ent@jlab.org>, "Patrizia Rossi" <rossi@jlab.org>, "Allison Lung" <lung@jlab.org><br><b>Cc: </b>"Glenn Young" <gyoung@jlab.org>, "Brian Eng" <beng@jlab.org>, "Ruben Fair" <rfair@jlab.org>, "John Hogan" <hogan@jlab.org><br><b>Sent: </b>Wednesday, September 13, 2017 8:26:36 AM<br><b>Subject: </b>Solenoid ramping today - need Brian<br></div><div><br></div><div data-marker="__QUOTED_TEXT__">Dear Amrit,<br>We are going to make our second series of attempts to ramp the solenoid today. As you know well, Brian Eng is a key person on the power side of the solenoid. We've had excellent support from him.<br><br>We managed to get to just over 1000A yesterday (40% of top field!) before encountering some trips due apparently to noise on a non-superconducting splice.<br>These necessarily trigger fast dumps. Thus we need to make adjustments to remove these sources of inadvertent trips.<br>We need to retune the quench detection circuits, including voltage thresholds and time delays, before we can re-start this morning. This includes analysis of the fast (10kHz data). We spent much of last evening looking at plots Brian prepared.<br><br>Brian is central to doing all of this, and thus we'd need to keep him here in Hall B today so we can proceed and finish up on the solenoid.<br><br>Thanks, Glenn<br></div></div></body></html>