Star-tpc-l mailing list

[Richard Witt <witt AT usna.edu>]

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

== Hardware

— SC3 very slow

— several things have been tried but nothing successful yet

— may ask Wayne to reboot once more

== Electronics

— Discussion with Christian this morning

— east end work is done except for a few cable wraps

— problem since STTC installation

— fiber connection to one TPC sector 8 RDO 3 not working

— whole RDO is out

— will be investigated

— worst case would have to reopen poletip and fix connection

— but that should be a last resort and the decision would be based on size of dead area

== Software

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

— Yuri showed slides on TPC23 cluster finder

— see https://www.star.bnl.gov/~fiscal/star/TPC/TPC23/

— differences in number of found clusters in outer sectors between online and TPC23

— different finders putting different bounds on found clusters resulting in more from TPC23

— efficiencies are lower for TPC23 at low-pt, high eta

— result is some track losses at high eta for TPC23 compared to online but losses are small and likely acceptable

— Guanan working on TpcRs

— still looking at differences in data width compared to simulation

— Yuri will send URL to TPC list

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

— Also waiting on comparison of momentum resolution from old and new alignment from Irakli

— also see https://drupal.star.bnl.gov/STAR/meetings/STAR-Collaboration-Meeting-Spring-2023/Pleanary-Session-I/iTPC-performance

== AOB

— Flemming will give an update to Operations meeting on status of TPC on March 22nd

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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