Commissioning and running of sPHENIX

[Jamie Nagle <jamie.nagle AT colorado.edu>]

Hello All,

I wanted to send out a few run number ranges that may be of interest to various groups.

(1) We started running at zero crossing angle with a good physics run # 46619 on June 24, 2024.    As detailed in my General Meeting presentation - linked at the bottom, that is the point where I am starting the count on integrated luminosity with reasonable detector / DAQ / trigger quality.

(2) On July 21, 2024 the sPHENIX magnet tripped off.     During the investigation of the cause and before the magnet was ramped back up, sPHENIX collected a data sample with B=0 that includes both the MVTX and INTT (along with other detectors).   The run numbers are  # 48869 - 48877.     Hopefully these can be useful, for example for alignment studies.  

(3) Today, July 22, 2024, sPHENIX requested steering from 0 crossing angle into +1.5 mrad crossing angle as a test in anticipation of the TPC coming online in the next week.    The run numbers are # 489034 - 49054.   The run just before the change for comparison (still at zero crossing) was # 489029.    Below are a few figures relevant to the change over.

Sincerely,

Jamie

Link to GM talk - https://indico.bnl.gov/event/24275/contributions/94297/attachments/55956/95774/sPHENIXRunCoordinator_GMupdate07192024.pdf

Screen captures relevant just before and after steering to +1.5 mrad:

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|| James L. Nagle   
|| Professor of Physics, University of Colorado Boulder

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