Star-tpc-l mailing list

[Richard Witt <witt AT usna.edu>]

Present: Alexei, Gene, Jim, Zachary, Flemming, Mathias, Grazyna, Yuri, and myself

== Hardware

— things running well in general

— laser runs are good with the usual caveats

— methane flow was slightly increased in response to decrease in drift velocity over the past couple weeks

— crews likely won’t see the difference for at least a few days of operations

== Electronics

— nothing new to report

== Software

— Run 22 SC

— pass 3 has been started and is proceeding well

— good to have calorimeter fix for this pass

—  dE/dx is turned on for this pass (no event.root files, but dE/dx is there if someone want to look at it)

— may want to take one more look with new TPC alignment 

— Production with TFG24c

— some delays due to farm capacity and killed jobs (~1-2 week delay)

— have now increased number of jobs by factor of 4 by splitting files into chunks

— so far 5-20% of data sample has been processed

— Update on test production with new alignment (3.2 GeV FXT)

— see slides sent to list by Zachary

— several tracks in test production are assigned zero momentum

— seems to be event-by-event fluctuation not track-by-track

— some example events are Run 20183003, events 1264727 and 1246798

— most events are okay and match the P24ia production, but need to understand the root of the issue

== AOB

— nothing else new reported this week.

Best Regards,

  Richard

Sent from my iPad

-- 
"Education is the most powerful weapon which you can use to change
the world."

--Nelson Mandela

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 Richard Witt, Professor of Physics     Phone (USNA): 410-293-6675
    United States Naval Academy         Email: witt AT usna.edu
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