Star-tpc-l mailing list

[Richard Witt <witt AT usna.edu>]

Present: Alexei, Flemming, Yuri, Gene, and myself == Hardware — Alexei will check log book to see if beam events that crash TPC are “beam loss” or “beam dump” — Yesterday during access put Caen on network switch (same as for laser) — first tested

ZjQcmQRYFpfptBannerStart

This Message Is From an External Sender

This message came from outside your organization.

 

ZjQcmQRYFpfptBannerEnd

Present: Alexei, Flemming, Yuri, Gene, and myself

== Hardware

— Alexei will check log book to see if beam events that crash TPC are “beam loss” or “beam dump”

— Yesterday during access put Caen on network switch (same as for laser)

— first tested switch with power supply

— crate is running last night without problem

— drift velocity is now mostly stabilized

— may be some very tiny tweak remaining

== Electronics

— still the usual losses and repairs of RDOs and FEEs (usual 15% dead on average)

— one RDO lost today is only restorable if pole tip is opened

== Software

— work on 3p85GeV Fixed Target from P24iy

— looking at K0 peak from KFParticle

— order of billion events

— improved width of K0 short peak (by about 20%) compared to TFG21g

— number of hyperventilating increased by about factor 2

— from low lumi pp, K0 width is down to about 6.5 MeV

— see https://drupal.star.bnl.gov/STAR/blog/fisyak/KFParticle-analysis-fresh-produced-data-P24iy

— about 25% of laser run appear to have failed in this entire run (this year)

— continuing work on for hit errors for DAQ5000  

== AOB

— Need to add TPC meetings back into STAR Drupal Calendar  

Best Regards,

  Richard

Sent from my iPad

-- 
"Education is the most powerful weapon which you can use to change
the world."

--Nelson Mandela

~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~
 Richard Witt, Professor of Physics     Phone (USNA): 410-293-6675
    United States Naval Academy         Email: witt AT usna.edu
~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~