Star-tpc-l mailing list

[Richard Witt <witt AT usna.edu>]

Present: Alexei, Flemming, Tommy, Yuri, Gene, and myself

== Hardware

— two shutdowns due to water maintenance

— some smoke spotted

— STAR was shutdown as precaution 

— coming back in next couple hours

 

== Electronics

— about 5 RDOs masked out for various reasons

— speed upgrade is moving forward

— TPC readout scheme issue understood

— will take out 1 RDO for tests

— confirm new FPGA code

— full test maybe next week

== Software

— Gene on SC for d+Au 200

— https://drupal.star.bnl.gov/STAR/blog/Geneva/Investigating-symmetry-Run-21-dAu200-SpaceCharge

— appears to be some additional component to SC from Au beam impacting the 5 cm -> 3 cm flange near z=400 cm due to high crossing angle

— some concerns about blue beam background in Run 23

— similar feature in “S” plots, but in upper left rather than lower right

— much smaller contribution overall

— perhaps a result of crossing angle

— Gene also mentioned PWGs are interested in dE/dx from 4.59 FXT data

— need some feedback on amount required for calibration 

— 7.3 GeV dE/dx sample (~300k evts)

— approximately 1% improvement from new work relative to what’s in dB now

— Yuri says better to do all runs together in one calibration pass rather than run by run

— work on O+O is still in progress

== AOB

— nothing new 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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