The STAR experiment

 agenda
-- hardware
-- software


Minutes

TPC weekly meeting

 

Hardware;  Alexei excused. Is working on laser and gas system

 

The GG driver modules have been installed (Christian, as Tim is out) One module does not provide HV. There are two spare modules.

David is communicating with Tonko how best to provide the SC for the Gating Grid.

 

Software

Irakli had at LBNL meeting; provided an update to me after meeting

 

“I talked to Yuri last week about progress and the calculation of the distortions.

 

I also pointed out to him a little problem in the reading of the inner sector position parameters from the database. We reached out to Dimitry and he changed the readout for that table. It hopefully was not affecting anything, but now I have a good way to compare apples to apples as far as the inner sector position parameters are concerned.

 

While doing so I noticed that that is where a huge shift in z direction originates, so now I want to see if that is the right result or an artifact from what I've been saying – one can end up in a local minima for the alignment procedure. I will keep you guys updated I the days to come. I am running these jobs as fast as possible (Dmitry's fix has been applied only Monday).”

 

Yuri presented some intermedial results on his investigations of showing effect of his modified equations as discussed in the previous meeting 12/9/2020 that also have the documents

https://www.star.bnl.gov/~fisyak/star/Tpc/Distortions/

 

Unless there are updates we need to discuss in person this was the last TPC meeting for 2020. Please send updates to the mailing list until then 1/5/2021

zoom info

Minutes:

Discussion about status of the GMT. The is not simulator so far for the GMT. It seems that fastsim based on hit position smearing should be sufficient.

There was a discussion if we could use K->3pi decay within TPC. KFParticle Finder woudl be useful for that, but it needs information about cov. matrix at the last point which is not currently saved in the data.
Such possibility exists in the TFG release. This would mean to reproduce small data sample under TFG.