Star-tpc-l mailing list

[Richard Witt <witt AT usna.edu>]

Present: Alexei, Jim, Flemming, Yuri, Gene, Emmy, and myself

== Hardware

— last Friday, during access

—  found TPC blower was not holding humidity (reaching close to 50%)

— AC unit was running but very hot (found no water flow)

— ran backwards flow and cleared an apparent blockage

— now working well, humidity down to about 32-34% (temp stable at ~21 C)

— sector 17 shows some anomalous hot cluster 

— visible in level 3 monitor

— not visible in summary plots (not present in every event)

— collider is currently down with problem in cooling circuit

— needs about 3 days to warm-up 

— hope for beam on or after Sunday

== Electronics

— recurring issues with some rebooting of TPC electronics

— Tonko is diagnosing

— about 4 RDOs are currently masked out

— also many separate FEEs 

== Software

— No SC calibration for the ongoing AU+AU yet

— Mass difference calibration work

— see https://drupal.star.bnl.gov/STAR/blog/educkwort/Mass-difference-TPC-Calibration

— code for analysis will go into analysis note for a paper

— table reported in the file above will go either into the analysis note or onto Drupal

— K0s for calibration of mag field

— see: https://drupal.star.bnl.gov/STAR/system/files/UseK_S0_To_Calibrate_MagField.pdf

== AOB

— R. Witt will be out of country for next 2 weeks, will rejoin on July 3rd.

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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