Star-tpc-l mailing list

[Richard Witt <witt AT usna.edu>]

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

== Hardware

— East laser power supply had a leak

— pump was leaking

— have a spare and beginning repair today

— TPC water system has leak from spiral hose as well

— was repaired yesterday

— notified electronics folks that they may resume work

— some discussion about how to align with movement of TPC

== Electronics

— Nothing new reported this week

== Software

— Babu working on d+Au SC and GL for Run 21

— Run 21 O+O large calibration production is finishing today

— can provide to Yuri to look at dE/dx

— For O+O Yuri still has a puzzle from survey

— difference between FF and RFF

— factor 2 deviation was reduced but some residual still present

— looking at 2011 27 GeV FF data to see if rotation of TPC is there 

— TPC23 cluster finder 

— using same DAQ file for online and offline

— Yuri sees some difference in TPX outer sector(s)

— comparison of online and (TPC23) offline shows about 10% difference in clusters

— checking to see if difference is due to gain file

— Yuri says Irakli reported to have finished alignment with his new approach

— report is there is a big improvement in alignment, but need to hear from Irakli directly

— Yuri needs position of TPC with respect to magnet from survey

— Guanan has finished tune-up of TpcRs

— still some question about tails

— data slightly wider than simulation in time direction

— want to understand that

— next will be to check data for fixed target runs

== AOB

— Some discussion of plan for fixed target (with 3 new targets)

— we would like to see the drawings of the location(s) of new targets on east side

— Tonko back in Croatia

— software expected to allow us to start with ~4 kHz

— will get to 5 kHz a little later

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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