Difference between revisions of "GlueX Start Counter Meeting, October 27, 2022"
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== Minutes == | == Minutes == | ||
| + | present: Sean, Beni | ||
| − | + | Sean: | |
| + | * look at propagation time corrected timing as a function of z position | ||
| + | ** a clear "slope" is seen that should not be there | ||
| + | ** run 71400 for comparison looks flat as it should | ||
| + | ** the hit multiplicity as a function of paddle number looks different to the past, the intensity distribution has a "hump" that is located at different paddle number than in the past, like run 73262 for example. | ||
| + | *** Question: has the start counter been mounted differently (different offset in phi?) | ||
| − | + | Beni: | |
| − | + | * shows similar effects like Sean. | |
| + | * the timing resolution for a single paddle at a fixed distance from the SiPMT looks good <300ps | ||
| + | * conclusion is that the SC is working ok but the timing corrections are failing. | ||
| + | * The walk correction is slightly over correcting some paddles at low amplitudes. | ||
==Slides== | ==Slides== | ||
Talks can be deposited in the directory <code>/group/halld/www/halldweb/html/talks/2022</code> on the JLab CUE. This directory is accessible from the web at https://halldweb.jlab.org/talks/2022/ . | Talks can be deposited in the directory <code>/group/halld/www/halldweb/html/talks/2022</code> on the JLab CUE. This directory is accessible from the web at https://halldweb.jlab.org/talks/2022/ . | ||
Revision as of 11:10, 27 October 2022
GlueX Start Counter Meeting
Thursday, September 15, 2022
10:00 am EDT
Zoom: link to meeting Passcode: 791663
Benedikt Zihlmann is inviting you to a scheduled ZoomGov meeting.
Topic: Start Counter Time: Sep 15, 2022 10:00 AM Eastern Time (US and Canada)
Every week on Thu, 7 occurrence(s)
Sep 15, 2022 10:00 AM
Sep 22, 2022 10:00 AM
Sep 29, 2022 10:00 AM
Oct 6, 2022 10:00 AM
Oct 13, 2022 10:00 AM
Oct 20, 2022 10:00 AM
Oct 27, 2022 10:00 AM
Please download and import the following iCalendar (.ics) files to your calendar system. Weekly: https://jlab-org.zoomgov.com/meeting/vJItc-isqTotGKrq3-zh8ruguiCcBhMVuhk/ics?icsToken=98tyKuiurj8rHtOUtxvBeI89FcHkberVjWVpgbFMz1L_C3hBdwTjP8FBELpSJs3Y
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Agenda
- Announcements
- Review of minutes from the last meeting
- Current Running (PrimeX)
- Calibration efforts
- Action Item to be set
Minutes
present: Sean, Beni
Sean:
- look at propagation time corrected timing as a function of z position
- a clear "slope" is seen that should not be there
- run 71400 for comparison looks flat as it should
- the hit multiplicity as a function of paddle number looks different to the past, the intensity distribution has a "hump" that is located at different paddle number than in the past, like run 73262 for example.
- Question: has the start counter been mounted differently (different offset in phi?)
Beni:
- shows similar effects like Sean.
- the timing resolution for a single paddle at a fixed distance from the SiPMT looks good <300ps
- conclusion is that the SC is working ok but the timing corrections are failing.
- The walk correction is slightly over correcting some paddles at low amplitudes.
Slides
Talks can be deposited in the directory /group/halld/www/halldweb/html/talks/2022 on the JLab CUE. This directory is accessible from the web at https://halldweb.jlab.org/talks/2022/ .
