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star-tpc-l - Re: [[Star-tpc-l] ] sector 24 RDO 4 issues.

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  • From: videbaek <videbaek AT bnl.gov>
  • To: videbaek <videbaek AT bnl.gov>, Tonko Ljubicic <tonko.ljubicic AT gmail.com>
  • Cc: "Ray, Robert L" <ray AT physics.utexas.edu>, Star-tpc L <Star-tpc-l AT lists.bnl.gov>
  • Subject: Re: [[Star-tpc-l] ] sector 24 RDO 4 issues.
  • Date: Wed, 16 Oct 2024 17:04:50 -0400

Hi tonko for reference the normal sector 24 offline looks like
the attached plot


On 2024-10-16 16:53, videbaek wrote:
Hi Lanny

I can confirm your observation. The last run in the fill of day 089
289061 and that is bad,
but for the next fill as you sya 290008.
It turns out to be very hard to see the issue in the online plots
attach are the cluster plot for sector 24 in run289061, so we really
don't have any tools to see this online, but only after fast offline.

Tonko is there anything in the logs?

So in both cases the problem was fixed after a beam dump, but not between runs.
The short runs done were setRHICclock and emccheck , can this do something?

Flemming




On 2024-10-16 16:08, Ray, Robert L wrote:
Hi Flemming:

Unfortunately, the low number of hits in sector 24, RDO 4 is
back again starting with run 25289050 for the rest of day 289.
In the few runs I have looked at in today's data (290), the
problem seems to have gone away.

Thanks,
Lanny

-------------------------

From: videbaek <videbaek AT bnl.gov>
Sent: Tuesday, October 15, 2024 1:18 PM
To: Star-tpc L <Star-tpc-l AT lists.bnl.gov>; Ray, Robert L
<ray AT physics.utexas.edu>
Subject: Re: sector 24 RDO 4 issues.

Hi
Tonko pointed out that current runs don't have this problem. So I went

back at looked at the TPC offline QA
and see clearly that the issues on sector 24 itpc 4 RDO was present
over
many daya
first bad run 283030 last bad run 285046 since 286003 all good.

The most peculiar is that nothing special is reported in the elog from

last bad to first good
=no pedestal, no power cycling, no reboot on DAQ.

-single beam run 285047
-blue beam dumped 22:43 10/11
-Run 25286001 - setRHICClock 00:15 10/12
- Run 25286002 - emc-check and 56*56 injected
- run 25286003 Au-Au good run

Was anything done to tpc's during this time? Can one check in log
messages for tpc?

best Flemming

On 2024-10-11 17:03, videbaek wrote:
In the fast offline QA Lanny pointed out that it seems sector 4 has
fewer hits and this has been the case since Monday.
After today’s QA-meeting I got a root file with all the the
information with various information and looked at
1) charge per pad/row
2)cluster charge per pad/row
I focused on row 39 which has two region from rdo 3 and rdo 4. From
physics point of view they should have same #hits and charge per pad
,
in average.
The file is from run 25283030 in FastOffline,

The attached file has some additional comments , discussions, and
plots

Thanks to Gene for providing the complete QA root file.

best Flemming

--
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

--
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

Attachment: Screenshot 2024-10-16 at 17.03.17.png
Description: PNG image




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