Star-tpc-l mailing list

[Richard Witt <witt AT usna.edu>]

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

== Hardware

— both poletips have been opened as of Friday

— Tonko has started working on electronics (coordinating with Alexei’s work)

— replaced laser lamps and tuning

— diagnosing west last

— may even replace trigger board

— gas system 

— hope to be allowed to have 2 or 3 6-packs of gas on pad

— will have an additional concrete pad with additional 6-packs near STAR as well

— will continue laser work through this week and next

— will then begin to recover gas system

— Alexei has begun measurements of each support of TPC

— will show Yuri the measurement process used today (4 pm)

== Electronics

— nothing new this week

== Software

— FXT 2021 calibration data are available 

— started 14.5 GeV data production from 2019 data (with latest dE/dx)

— Jeff downloaded cosmic data from HLT farm for Yuri

— have ~3M matched cosmic pairs, ~5M RFF.

— comparison of FF and RFF started

— have ADC files for cluster finder comparison

— some apparent rejection in online when cluster touches edge

— dE/dx in P23id

— Yuri has put pages documenting dE/dx production quality in production versions

— noticed a splitting in proton (and heavier) bands in newer P23id production

— thought to be related to ADC separation which is different between iTPC and TPX

— needs further investigation 

== 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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