Difference between revisions of "GlueX Start Counter Meeting, October 30, 2023"
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** Geometry: [https://logbooks.jlab.org/entry/4197643 SC match to tracks] | ** Geometry: [https://logbooks.jlab.org/entry/4197643 SC match to tracks] | ||
** Preparation for next year's running | ** Preparation for next year's running | ||
| − | *** FADC250_READ_THR 120: (Runs 41384, 120848) needs to be higher, 20 ADC counts above base line is too low. | + | *** FADC250_READ_THR 120: (Runs 41384, 120848) needs to be higher, 20 ADC counts above base line is too low. Full scale of 4096 bits is 500mV with a base line around 100 leads to 500mV/(4096-100) = 0.12mV / ADC count: So a setting of 20 ADC counts above base line corresponds to only 2.5mV |
| + | *** DSC2_THRESHOLD 50 60: this corresponds to 50mV for discriminator threshold setting. | ||
| + | *** while adc readout threshold is clearly set too low the discriminator threshold may be too high. Need to find compromise and better match. | ||
== Minutes == | == Minutes == | ||
Revision as of 14:08, 24 October 2023
GlueX Start Counter Meeting
Monday, October 23, 2023
9:00 am EDT
Meeting information: https://jlab-org.zoomgov.com/j/1604147172?pwd=QjRtMDRRQ0lVNW5oVVA0VmFMSnh1dz09
Benedikt Zihlmann is inviting you to a scheduled ZoomGov meeting.
Topic: Start Counter
Contents
Agenda
- Start Counter status:
- Calibration: SC Calibration Wiki Page
- Start_Counter_Operations
- Geometry: SC match to tracks
- Preparation for next year's running
- FADC250_READ_THR 120: (Runs 41384, 120848) needs to be higher, 20 ADC counts above base line is too low. Full scale of 4096 bits is 500mV with a base line around 100 leads to 500mV/(4096-100) = 0.12mV / ADC count: So a setting of 20 ADC counts above base line corresponds to only 2.5mV
- DSC2_THRESHOLD 50 60: this corresponds to 50mV for discriminator threshold setting.
- while adc readout threshold is clearly set too low the discriminator threshold may be too high. Need to find compromise and better match.
Minutes
present:
Action Items
Slides
Talks can be deposited in the directory /group/halld/www/halldweb/html/talks/2023 on the JLab CUE. This directory is accessible from the web at https://halldweb.jlab.org/talks/2023/ .
