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[videbaek <videbaek AT bnl.gov>]

TPC meeting 05/09/2024

Present: Yuri, Gene, Alexei, Tommy, Jim and Flemming
excused; richard finals.

Hardware: Alexei
Working on Magnetometer readout.
Laser status: East is weak ; only one raft
West ok 2 rafts. Yuri is concerned about East status; It has though been 
like this for several years.

Methan content has been changed to make it more stable.

Pressure spike in yesterday thunderstorm was handled very well by 
system.

Software:
Gene presented a couple of studies
a) background in early parts of fill. Concerning due to unknown charge 
distributions from backgrounds blog 
https://drupal.star.bnl.gov/STAR/blog/genevb/Background-Run-24-pp200
b) study of cluster widths (time) for tracks
blog entry 
https://drupal.star.bnl.gov/STAR/blog/genevb/Run-24-TPC-clusters-wide-time
c) transparency study. Blog 
https://drupal.star.bnl.gov/STAR/blog/genevb/TPC-Gating-Grid-Transparency-study
Conclude that at these lumi (4kHz BBC) no observable effect at 5kHz 
triggering rate.

Run 22 pp space charge calibration. It is ready for production of 3,400 
jobs (runs) covering 250 fills. For each runs several daq files must be 
processed. Ready to go.


--
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