GlueX TOF Meeting, October 25, 2017
GlueX Time-of-Flight Meeting
Wednesday, October 25, 2017
11:00 am EDT
JLab: CEBAF Center, Room CC226
Contents
Agenda
- Announcements
- Review of minutes from the previous meeting
- Calibration Status
- Time Calibration
- Energy Calibration
- PMT testing
- NIM Paper (Paul)
- Action Item Recap
Communication
- The BlueJeans Meeting number is 350 531 998.
- Enter BlueJeans Meeting
Slides
Talks can be deposited in the directory /group/halld/www/halldweb/html/talks/2017 on the JLab CUE. This directory is accessible from the web at https://halldweb.jlab.org/talks/2017/ .
Minutes
Present:
- FSU: Sasha Ostrovidov, Brad Cannon
- JLab: Thomas Britton, Simon Taylor, Beni Zihlmann
There is a recording of this meeting on the BlueJeans site.
Announcements
None
Review of minutes from the previous meeting
We reviewed the minutes from the previous meeting.
Calibration
Code for TOF Hit factory has been updated. The default time window for matching ADC and TDC hits has been increased from 10 to 20ns to match the output signal width of the discriminators. The code was modified to NOT overwrite already found matches with new TDC match but instead make new Hit.
PMT testing
The new HV power supply sent to FSU already stopped working. Us single channel module for now. Gain measured for 10 PMTs. The measured gains differ from the factory values by +/- 10-20% this is more than previously seen. One PMT seems to have very low QE.
