Difference between revisions of "GlueX TOF Meeting, October 4, 2016"
From GlueXWiki
(Created page with "GlueX Time-of-Flight Meeting<br> Tuesday, October 4<br> 11:00 am EDT<br> JLab: CEBAF Center, Room F326/327 ==Agenda== # Announcements # Review of GlueX TOF Meeting, Septem...") |
(→Slides) |
||
Line 18: | Line 18: | ||
Talks can be deposited in the directory <code>/group/halld/www/halldweb/html/talks/2016</code> on the JLab CUE. This directory is accessible from the web at https://halldweb.jlab.org/talks/2016/ . | Talks can be deposited in the directory <code>/group/halld/www/halldweb/html/talks/2016</code> 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 [https://bluejeans.com/s/4J7we/ 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 [[GlueX TOF Meeting, September 20, 2016#Minutes|minutes from September 20]]. | ||
+ | |||
+ | Mark will arrange a meeting with Vladimir Popov next week to discuss PMT bases with amplification. |
Revision as of 15:29, 4 October 2016
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.