Star-tpc-l mailing list

[Richard Witt <witt AT usna.edu>]

Present: Alexei, Flemming, Gene, Jim, Yuri, Mathias, Daniel, and myself

== Hardware

— magnetometer is now stable and running 

— readings are more accurate than we used to have

— working to establish readout and get into slow control and dB

— Alexei will send image of readings to list for discussion

== Electronics

— multiple RDOs go out and are repaired weekly.

— about 10% of iTPC out now and some TPX

— some may be result of power distribution (iTPC vs TPX)

== Software

— Run 22 SC

— calibration production finished ~222 out of 246 fills calibrated (fill-by-fill) 

— missing barrel tower was problem for some fills in pass2 

— pass2 expected to start today

— pass2 needs a couple weeks, but will be first fill-by-fill SC corrected calibration for Run 22

— pass3 will hopefully be a confirmation that pass2 is good

— will look at h-/h+ from pass1 to pass2 to judge effectiveness of fill-by-fill calibration

— Discussion of track breaking in FXT runs

— Gene looked at differences in alignment and the effect on track breaking

— different field orientations may show different effects

— perhaps some evidence for alignment effects

— Cosmics alignment is finished

— Yuri putting together summary of cosmics alignment

— want to use that alignment for real data production (both collider and FXT)

— Work ongoing on track breaking at UC Davis 

— looking also at consistency of effect from energy to energy

— some unexpected inconsistencies from energy to energy

— see shift in XY vertex reconstruction using broken tracks

== AOB

— Some question about sPHENIX status and commissioning (affects STAR plan), but no answers

— Hope to learn something new next week at RHIC/AGS meeting 

— 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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