[Hallc_running] [New Logentry] 23/08/22 - RC Update

sjdkay at jlab.org sjdkay at jlab.org
Tue Aug 23 09:50:01 EDT 2022

Logentry Text:
Today's update -

Data taking overnight was good, we got the Q2=1.60 W=3.08 x=0.15, Low Epsilon, SHMS Centre (5.50) LH2+ and Dummy settings done (see https://logbooks.jlab.org/entry/4032801).

We've now started on the LD2 runs. We're running at 32uA here and getting around 1k pions an hour. We should finish this setting at some point early on in Swing shift if things go well.

After this, we wave goodbye to 5.5 degrees for the last time in PionLT and rotate out to 7.50 degrees to do the LH2, LD2 and Dummy again for the SHMS left version of this kinematic. This should take us through the night, as in the run plan yesterday, the plan is to finish up the HeePCoin settings (#4 and #5) after we finish this kinematic. After that, it's on to the negative polarity runs. See the 24hr run plan from yesterday - https://logbooks.jlab.org/entry/4032448.

We have the BCM calibration scheduled for ~11:30 this morning (after the RC meeting) and then we'll be doing the arc energy measurement tomorrow. 

In terms of problems, the only issue we have is a minor issue with the Q2 field readback - https://logbooks.jlab.org/entry/4032764. The magnet is on and the current readback is fine, there's no reason to suspect there's a real issue here, this is likely just a comms issue with that channel (tied to network switch work yesterday perhaps?)

We'll have a meeting at 11:00 on Zoom -

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This is a plain text email for clients that cannot display HTML.  The full logentry can be found online at https://logbooks.jlab.org/entry/4032815
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