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- From: "Huang, Jin" <jhuang AT bnl.gov>
- To: "Pereira Da Costa, Hugo Denis Antonio" <hugo.pereira-da-costa AT lanl.gov>, sPHENIX-tracking-l <sphenix-tracking-l-bounces AT lists.bnl.gov>, "'sphenix-calibration-l AT lists.bnl.gov'" <sphenix-calibration-l AT lists.bnl.gov>, "'sphenix-tpc-l AT lists.bnl.gov'" <sphenix-tpc-l AT lists.bnl.gov>
- Cc: Hugo Pereira Da Costa <hugo.pereira.da.costa AT gmail.com>
- Subject: Re: [Sphenix-calibration-l] Slides from today
- Date: Tue, 4 Jun 2024 06:07:35 +0000
From my homework today, GEM resistance spark rate vs ZDC rate during the collision rate scan [https://chat.sdcc.bnl.gov/sphenix/pl/fy7tr7kixfgu8pgstzmk87rjoo ]
Outer GEMs do observe higher spark rate, though the rates do not seem to scale with GEM area. There seems to be little collision rate dependence for the GEM resistance spark rate at 4.1kV. Note that this direct ZDC rate dependence study is suggesting different ZDC rate dependency when compared with the earlier attempt during the review when data are sourced from 4.35kV, various HV Ops points and RHIC configurations [https://indico.bnl.gov/event/23321/#2-tpc-operation-with-beam]
Feel free to play with the data https://docs.google.com/spreadsheets/d/1TPc74FrH7Hq5duPTqUWogHy0zUDVrTdZ/edit?usp=sharing&ouid=110921170737767335754&rtpof=true&sd=true and from the Grafana data source http://insight.sphenix.bnl.gov:3000/d/Or0XrYbSk/playground?orgId=1&from=1716686092000&to=1716691913000
Cheers
Jin
______________________________
Jin HUANG
Physicist, Ph.D. Brookhaven National Laboratory Physics Department, Bldg 510 C Upton, NY 11973-5000
Office: 631-344-5898 Cell: 757-604-9946 ______________________________
From: Sphenix-tpc-l <sphenix-tpc-l-bounces AT lists.bnl.gov>
On Behalf Of Pereira Da Costa, Hugo Denis Antonio
All,
The slides from today’s discussion about how to address background and stability issues in the TPC are at: Charles has added the list of runs and conditions for the vertical beam scan on slide 2.
Hugo |
-
[Sphenix-calibration-l] Slides from today,
Pereira Da Costa, Hugo Denis Antonio, 06/03/2024
- Re: [Sphenix-calibration-l] Slides from today, Huang, Jin, 06/04/2024
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