STAR HardProbes PWG

["Ma, Rongrong" <marr AT bnl.gov>]

Dear Conveners

Could you let us know the status of this restoration request? Thanks. 

Best

Rongrong

On Mar 31, 2024, at 11:30 PM, Zetong Li via Star-hp-l <star-hp-l AT lists.bnl.gov> wrote:

Hello convenors,

I am Zetong Li from SCNU. I am currently assisting Yuri in scanning through the Run18 Isobar data from the st_hf and st_hf_adc to identify file names and eventIDs containing Upsilon candidates. As we all know, both the Run18 Isobar data and the data from 2011 to 2014 show a large Upsilon peak width, and we suspect that this may be related to momentum resolution caused by TPC misalignment. If we can identify all picoDst files containing Upsilon candidates in the Run18 Isobar data, as well as their eventIDs, they can be used for setting up the machinery for checking TPC misalignment for Run23+25 using Upsilon peak width. However, during the retrieval of files corresponding to the runID, we discovered that some run files were unavailable. We also realized from the website (https://www.star.bnl.gov/public/comp/prod/localdata/ProdDDstreams_pico.html) that currently, only 40% of the picoDst files can be read from the distributed disk. As a result, we found that compared to the Upsilon candidates we previously obtained, we can now only find approximately 40% of them in the PicoDst files. Here is the result recently((https://drupal.star.bnl.gov/STAR/system/files/Upsilon_candidate.pdf). Therefore, we would like to inquire if you can assist us in scheduling the restoration of st_hf and st_hf_adc datasets. If possible, could you please provide us with an estimate of the restoration time? Thank you. Best regards, Zetong _______________________________________________
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