Difference between revisions of "GlueX Start Counter Meeting, December 15, 2011"
(notes as minutes) |
(→Minutes) |
||
| Line 28: | Line 28: | ||
=Minutes= | =Minutes= | ||
| − | + | Present: | |
| − | + | * '''FIU''': Werner Boeglin, Puneet Khetarpal, Eric Pooser | |
| − | + | * '''JLab''': Chuck Hutton, Mark Ito (chair), Beni Zihlmann | |
| − | + | ||
| − | + | ||
| − | + | ||
| + | ==Scintillator shaping and polishing== | ||
scintillators polishde, repolished | scintillators polishde, repolished | ||
two slightly better, others destroyued | two slightly better, others destroyued | ||
| Line 48: | Line 46: | ||
they have been responsive | they have been responsive | ||
| + | ==Re-measurement of Plastic Craft samples== | ||
after polishing eric measured them | after polishing eric measured them | ||
get 500 ps at far end | get 500 ps at far end | ||
| Line 58: | Line 57: | ||
worst 500-600 ps | worst 500-600 ps | ||
no wrapping | no wrapping | ||
| − | |||
| − | |||
plastic craft presses the scintillator | plastic craft presses the scintillator | ||
| + | |||
| + | ==SiPM read-out== | ||
look at Werner's drawing | look at Werner's drawing | ||
| Line 67: | Line 66: | ||
Beni: with no light guide, non-linearity when hits are near the end | Beni: with no light guide, non-linearity when hits are near the end | ||
Eugene suggest modularity | Eugene suggest modularity | ||
| + | |||
| + | need to do homework | ||
Revision as of 15:45, 15 December 2011
GlueX Start Counter Meeting
Thursday, December 15, 2011
10 am EST
JLab: CEBAF Center, Room L207
Contents
Agenda
- Announcements
- Review minutes from previous meeting
- Prototype Report
- SiPM configuration
- Contract Status
- Simulation Status
Communication Information
Video Conferencing
- ESNet: 8542554 (non-standard)
- EVO:
- Meeting URL: http://evo.caltech.edu/evoNext/koala.jnlp?meeting=e9eIeivevnaeaBIsaaI9
- Phone Bridge ID: 11 7685
Slides
Talks can be deposited in the directory /group/halld/www/halldweb1/html/talks/2011-4Q on the JLab CUE. This directory is accessible from the web at https://halldweb1.jlab.org/talks/2011-4Q/ . You have to be a member of the "halld" Unix group to put files in this directory.
Minutes
Present:
- FIU: Werner Boeglin, Puneet Khetarpal, Eric Pooser
- JLab: Chuck Hutton, Mark Ito (chair), Beni Zihlmann
Scintillator shaping and polishing
scintillators polishde, repolished two slightly better, others destroyued not happy look for other companies two companies in california mcneil, or mcneal enterprises E&F plastics drawings sent to both, both say they can do it E&F want to mill out of single piece of scint $200 per sent a good and a bad to both they have been responsive
Re-measurement of Plastic Craft samples
after polishing eric measured them get 500 ps at far end 300-500 ps over the length with SiPM
ej204 ej212, same time resolution, polished, improvment in attenuation length, samll improvment in time resolutions, ej212 thin pieces, ej204 is faster by 20%, longer attenuations length 230 ps best worst 500-600 ps no wrapping
plastic craft presses the scintillator
SiPM read-out
look at Werner's drawing
Beni: with no light guide, non-linearity when hits are near the end Eugene suggest modularity
need to do homework
