GlueX Start Counter Meeting, December 4, 2023

GlueX Start Counter Meeting
Monday, December 4, 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: KLF

Agenda

KLF Topcis:

• Beam line
  • design status
  • beam properties, beamline simulation, beam background
  • KLong and netros TOF
• Start Counter / DAQ Physics Trigger
  • Start Counter Detector requirements
  • Requirements on trigger and DAQ

• From Joerg...

I did some inventory. I find 20 scintillator paddles. I also found the rig that has been used here at FIU to test individual paddles.

When just talking to Werner I further learned:

Most likely we built 50, 30 were used in the detector and 20 are spares. All 50 paddles were tested; test data were transmitted to JLab. The rig that has been used for assembly and adjustment should be at JLab.

Werner thinks that the SiPMs might have to be replaced. This would need a look at the SiPM mounts. During the previous assembly, the SiPMs were mounted and then the scintillators also adjusted. If the scintillators don't need to get replaced, Werner advises against disassembling that part of the detector; instead he recommends to tweak the mounts for the SiPM boards, such that they can get adjusted.

We can send all remaining paddles to JLab: media: IMG_7859.jpg, media: IMG_7858.jpg, media: IMG_7860.jpg.

Minutes

present:

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/ .