Star-tpc-l mailing list

[James H Thomas <jhthomas AT berkeley.edu>]

Quick update from Alexei on the TPC Hardware & systems:

New 12 pack of gas cylinders have been received and connected.

Midnight crew needs a bit more training on how to tune (and keep tuning) the lasers during each laser run

East Laser optics need maintenance soon.  One or more mirrors need to be replaced and then aligned.  This will require an access that allows the laser boxes to be opened and no other nearby activity while this work goes on.

Other TPC systems seem to be working well.

Cheers,
Jim

--

Jim Thomas

Email: jhthomas AT berkeley.edu

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On Thu, Jul 24, 2025 at 12:20 PM Richard Witt <star-tpc-l AT lists.bnl.gov> wrote:

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

== Hardware

— TPC seems to be running well 

— further updates may follow on the TPC list

== Electronics

— the usual RDO and FEE outages occurring, nothing unexpected

— Tonko still working (partly on vacation)

— fixing dead electronics when possible

== Software

— TPC SC

— Run 24 pp200 low-lumi SC calibration is done for all that is possible

— 1st 24 hrs of running there are no RICH scalars so no easy way to recover it

— will put everything that’s done in the dB and work on getting a calibration production for the rest

— Gene is using the new alignment for this (P24iy)

— TFG25e release

— working on understanding track-by-track comparisons with 32 and 64 bit versions

— also fighting some MySQL versions (Dimitri helping)

— 4.8 GeV FXT with ROOT 6

— some problem reading ROOT 6 files with ROOT 5 (and vice vesa)

— SL24y_TFG25e compared with SL7_AL9 

— no differences, software runs as expected on both

— standard and TFG have some efficiency differences for globals, but this is an older problem

— TFG is less efficient than standard for primaries (but not by as much) in same set

— some shift in Z between the two productions, may affect vertex and therefor primaries

— Would like to compare Alma Linux ROOT 5 and ROOT 6

— Yuri has information about support cone and connectors, can check now

— also received information about GMT

== AOB

— Nothing new for this week

Best Regards,

  Richard

Sent from my iPad

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"Education is the most powerful weapon which you can use to change
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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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