Star-tpc-l mailing list

[videbaek <videbaek AT bnl.gov>]

TPC meeting June 27, 2024
Present: Alexei, Jim, Frank, Dan, Yuri, Mattheu,  Gene and Flemming

-hardware:
Position and composition of NMR probe has been documented by Alexei. An 
entry to drupal blog has been added 
https://drupal.star.bnl.gov/STAR/blog/videbaks/NMR-probes.
This would require an update to detector description in GEANT as it is 
in the active are of BBC and EPD.

Tim has order additional interface so the NMR readout can be attached to 
slow control.

Shift crews as usually struggles to operate laser well. Alexei provides 
on hand training to crew, and this helps a lot.

-software
Yuri presented at the Tuesday mgt meeting status, and a  detailed plan 
for alignment and calibration needed for the FXT target data and beyond, 
The plan was well received by mgt and will form basis for work in the 
coming month , including calibrations tasks for BTOF, eTOF,… The 
presentation is available at 
https://drupal.star.bnl.gov/STAR/event/2024/06/25/STAR-management-meeting/TPC-Alignment2024

-electronics
Usual loss of ~1 RDO per day of running. Several have been brought back 
to life by Tonko when there is sufficient downtime available to diagnose 
issues (prom’s power distribution).
Fairly stable overall.

-	QA team identified data where offline cluster finding failed to read 
adc files causing  memory overwrites and leaks. Issue was identified by 
Tonko, and relates only to offline cluster finding. Pull request has 
been generated.

-software
Yuri is working on optimizing t0 for FXT to minimize residual track 
breaking, using position of target (200 – 200.5 cm).

Richard T. and Jae N. is working with Gene on 2022 space charge. 
Fill-by-fill correction is proceeding well.






--
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