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  • From: videbaek <videbaek AT bnl.gov>
  • To: Richard Witt <witt AT usna.edu>
  • Cc: Star-tpc L <Star-tpc-l AT lists.bnl.gov>
  • Subject: Re: [[Star-tpc-l] ] TPC Meeting Minutes
  • Date: Thu, 18 Jul 2024 14:39:30 -0400

Hi Zach and Mathias,
can you post the slides somewehre on drupal (your blog?) so I can link them to the minutes.

I have Yuri's link on drupal already.

-F


On 2024-07-18 12:53, Richard Witt wrote:
Present: Alexei, Gene, Jim, Yuri, Zachary, Tommy, Flemming, Mathias,
Prashanth, and myself

== Hardware
— thunderstorm yesterday, almost 3 mbar pressure spike
— gas system behaved very well

== Electronics
— some power problems to RDOs as usual
— tried to fix some yesterday, other are out for the run
— overall, the number out at any given time is more or less stable
— more TPX problems this year than last
— seems most concern is about the power system

== Software
— Run 22 SC
— starting pass 3
— about 247 fills, but calibration only works for about 235
— trying to use calibration from nearby fills for the ones that
don’t work

— Starting production with TFG24c
— some problem with long jobs (> 3 days on a file)
— trying to increase statistics to 100 million events
— K0 width looks better in TFG vs most recent production
— may need one or two more weeks depending on speed of processing

— Early QA from production with new alignment (3.2 GeV FXT)
— DCAX and DCY look good
— double peak structure due to broken tracks is gone
— comparison with embedding also looks very good for low rapidity
(not crossing CM)
— some difference for higher eta with CM crossing tracks, but only
in DCAY
— nHits distributions also look good between test production and
embedding
— maybe some systematics above eta~2
— perhaps some relation to revised formulation of TPC hit errors in
TFG test production?
— PV distribution also shows some differences between test
production and P24ia
— can look at mean eta vs PVZ between test and P24ia

== 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

~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~
Richard Witt, Professor of Physics Phone (USNA): 410-293-6675 [1]
United States Naval Academy Email: witt AT usna.edu
~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~

Links:
------
[1] tel:410-293-6675

--
Flemming Videbaek
senior scientist, emeritus
videbaek @ bnl.gov
Brookhaven National Lab
Physics Department
Bldg 510D
Upton, NY 11973

phone: 631-344-4106
cell : 631-681-1596



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