Star-tpc-l mailing list

[Richard Witt <witt AT usna.edu>]

Present: Alexei, Gene, Jim, Yuri, Mathias, Pavel, Daniel, Frank, and myself

== Hardware

— installed magnetometer on July 6th

— data stream goes to dB

— readings look good

— magnet has been half-field for past couple days due to humidity

— gas system is also okay

— some ongoing network problems as well and a failed switch

— maybe run with 3/4 field to reduce trips?

— possible but will reduce momentum resolution

— also, we have no official field map for 3/4 field (though we only have a map for 1/2 field, FF only)

— also, not likely analysis groups will utilize the set

== Electronics

— problems with PROMS

— increasing current in some FEEs and parent RDOs not working properly

— perhaps due to chips suffering radiation damage(?)

— more problems on iTPC (inner) sectors than on TPX (outer) sectors

— two RDOs lost last night, may not be recoverable

== Software

— Run 22 SC

— calibration is proceeding

— third pass starting end of this week

— studying second pass right now

— will have a beam line calibration as well for third pass

— expect about 3 weeks, should be ready for TPC dE/dx sample in early August

— Progress on FXT final data production

— see slides at https://drupal.star.bnl.gov/STAR/system/files/TPCFXT2024.pdf

— TPC alignment nearly finalized

— Prepared TFG24c release

— Adjust trigger delay based on PV reconstruction comparison with 2 different methods

— use either hits or tracks from West or East TPC only (see slide 3)

— in preparing TFG24c, need to split repo due to number of files reaching cvmfs upper limit

— no access to file needed for splitting

— instructions for using TFG24c are on slide 7 of this presentation

— use of production cluster was refused for producing calibration samples

— using TFG allocated space on RCF to run smaller batches to start FXT test production

— will take about 3 weeks at current rate

— began preparation of TFG  release for merger with official STAR (star-sw) repo

— need to separate alignments between old and new on merger so as not to introduce confusion

— Mathias will begin looking at produced files as they appear

— More resources are needed to finish in 2 weeks, 100 TB and more CPU (about a factor 5 increase)

— need a STAR management statement on these requirements

== AOB

— 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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