[Sbs] [New Logentry] Hall A RC Update [10/3/21]

[flay at jlab.org]

Logentry Text:
--
The Hall is in restricted access as we continue to prepare for beam.  Tomorrow
is going to be a busy day with a lot of activity around the target pivot
with vacuum pumpdown and target work, BigBite magnet survey, and more.  Details are below. 

<br>
<br>
<b>Announcements</b>
<ul>
<li> Online LH2 target training at 1 pm on Monday with Silviu Covrig Dusa (https://bluejeans.com/127830759/1614) 
<li> Yellow book documentation (COO, ESAD, RSAD) will be placed in the counting house once we receive the run certificate from Patrizia (expected early Monday). All shifters must read and sign this documentation prior to sitting for shifts. Note that you can read most of this documentation on the GMn website (https://hallaweb.jlab.org/experiment/SBS/GMn/GMn_Website.html#gmnsafety).
</ul>

<b>Plan for Monday</b>
<ul>
<li> BB side downstream lead shielding installation
<li> Installing guards on SBS corrector magnets
<li> Ion chamber installation
<li> Target chamber/downstream beam line vacuum pumpdown
<li> BigBite magnet survey
</ul>

Other notes for today:
<br>
<br>

<b>Target</b>
<ul>
<li> Stanchion installed at ~25 deg off of the beam line, 3.5 ft downstream of
pivot for ion chamber installation tomorrow (attachment 1)
</ul>

<b>GEMs</b>
<ul>
<li> Argon ran out in the gas shed. Alexandre and DF swapped in two full cylinders
(https://logbooks.jlab.org/entry/3917016) Jessie and Jack notified, along with GEM experts.
<li> Turned off the HV. Will wait until Monday morning to turn the HV back on
</ul>

<b>DAQ</b>
<ul>
<li> Long fiber-optic cable run to the LHRS
<li> Ongoing tests with the full configuration; testing the updated firmware for the
Trigger Interface.
</ul>

---

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/3917078
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