GlueX TOF Meeting, October 4, 2016
From GlueXWiki
GlueX Time-of-Flight Meeting
Tuesday, October 4
11:00 am EDT
JLab: CEBAF Center, Room F326/327
Contents
Agenda
- Announcements
- Review of minutes from the previous meeting
- HV Scan Plan (Beni)
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/2016
on the JLab CUE. This directory is accessible from the web at https://halldweb.jlab.org/talks/2016/ .
Minutes
Present:
- FSU: Sasha Ostrovidov
- JLab: Thomas Britton, Eugene Chudakov, Mark Ito (chair), Simon Taylor, Beni Zihlmann
There is a recording of this meeting on the BlueJeans site.
TOF HV scan Fall 2016
Beni presented his plan.
Prerequisites
- a) base line adjusted to 100 ADC counts
- b) all discriminator thresholds at about 10 mV above base line
- c) readout window optimized for ADC with first pulse at least 10 samples after window start, window width 160ns (40 samples)
- d) NSA 25 samples
- e) NSB 3 samples
- f) CAEN tdc readout window 200ns and timing peak in center.
Data Taking List
- set all HV to NOMINAL=1200V (>25 M triggers, ~25 files)
- set all HV -25V of NOMINAL (>25 M triggers)
- set all HV +25V of NOMINAL (>25 M triggers)
- set all HV -50V of NOMINAL (>25 M triggers)
- set all HV +50V of NOMINAL (>25 M triggers)
- set all HV -75V of NOMINAL (>25 M triggers)
- set all HV -100V of NOMINAL (>25 M triggers)
- set all HV -125V of NOMINAL (>25 M triggers)
We thought that we should add a few voltage settigs above NOMINAL in addition to those listed above.
Review of minutes from the previous meeting
We looked at the minutes from September 20.
Mark will arrange a meeting with Vladimir Popov next week to discuss PMT bases with amplification.