Difference between revisions of "GlueX Start Counter Meeting, May 17, 2012"
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# Review [[GlueX Start Counter Meeting, May 3, 2012#Minutes|minutes from previous meeting]] | # Review [[GlueX Start Counter Meeting, May 3, 2012#Minutes|minutes from previous meeting]] | ||
# Prototype Report | # Prototype Report | ||
| − | # [https:// | + | # [https://halldweb.jlab.org/talks/2012-2Q/sc_5_17_12.pptx Readout Design] |
| − | #* [https:// | + | #* [https://halldweb.jlab.org/talks/2012-2Q/ST%20Readout.pdf Fernando's note] |
# Simulation | # Simulation | ||
| − | #* presentation from previous collaboration meeting [ | + | #* presentation from previous collaboration meeting [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=1921] |
=Communication Information= | =Communication Information= | ||
| Line 25: | Line 25: | ||
==Slides== | ==Slides== | ||
| − | Talks can be deposited in the directory <code>/group/halld/www/ | + | Talks can be deposited in the directory <code>/group/halld/www/halldweb/html/talks/2012-2Q</code> on the JLab CUE. This directory is accessible from the web at https://halldweb.jlab.org/talks/2012-2Q/ . |
=Minutes= | =Minutes= | ||
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* '''JLab''': Fernando Barbosa, Chuck Hutton, Mark Ito (chair), Yi Qiang, Tim Whitlatch, Beni Zihlmann | * '''JLab''': Fernando Barbosa, Chuck Hutton, Mark Ito (chair), Yi Qiang, Tim Whitlatch, Beni Zihlmann | ||
| − | + | ==Simluation== | |
| − | background rates | + | Puneet is going to start background rates studies with the new updated (30 paddle) geometry. |
| − | + | ==Mechanical Design== | |
| − | + | Chuck showed the latest progress on the design. See [https://halldweb.jlab.org/talks/2012-2Q/sc_5_17_12.pptx his slides] for various views of the start counter focusing on the read-out area. Realistic drawings of the SiPM read-out boards are now included. Some highlights of the discussion: | |
| − | + | * A thermal mat could be used if needed to help cool the boards. Currently it is not in the plan. | |
| + | * There is spacer shown between the read-out boards for light tightening the counter volume. | ||
| + | * Bolt holes holding the SiPM boards (ST1) to the support tube will serve as positioners. | ||
| + | * A positioning template will be used when scintillators are attached to the foam to guarantee good alighnment with the SiPM's. | ||
| + | * There will be air gap between the scintillator and the SiPMs. | ||
| + | * There is currently a problem with interference of cable connector with support tube. A compromise with the target design will have to be struck. | ||
| − | + | ==SiPM Read-Out Boards== | |
| − | + | ||
| − | + | ||
| − | + | Fernando reported that the plan is to send out the design tomorrow. It should be in fabrication by next week. | |
| − | + | ||
| − | + | ==Prototype News== | |
| − | + | Two scintillator samples came in from McNeal. One was badly crazed, but the other does not look so bad. Timing tests are next (for the good one). | |
| − | + | ==TDR== | |
| − | + | Werner continues to working on the TDR | |
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
Latest revision as of 17:00, 24 February 2017
GlueX Start Counter Meeting
Thursday, May 17, 2012
10 am EDT
JLab: ARC 428
Contents
Agenda
- Announcements
- Review minutes from previous meeting
- Prototype Report
- Readout Design
- Simulation
- presentation from previous collaboration meeting [1]
Communication Information
Video Conferencing
- ESNet: 8542553
- EVO:
- Meeting URL: http://evo.caltech.edu/evoNext/koala.jnlp?meeting=eneueMvsv2aBaDInalIn
- Phone Bridge ID: 13 2615
Slides
Talks can be deposited in the directory /group/halld/www/halldweb/html/talks/2012-2Q on the JLab CUE. This directory is accessible from the web at https://halldweb.jlab.org/talks/2012-2Q/ .
Minutes
Present:
- FIU: Werner Boeglin, Puneet Khetarpal
- JLab: Fernando Barbosa, Chuck Hutton, Mark Ito (chair), Yi Qiang, Tim Whitlatch, Beni Zihlmann
Simluation
Puneet is going to start background rates studies with the new updated (30 paddle) geometry.
Mechanical Design
Chuck showed the latest progress on the design. See his slides for various views of the start counter focusing on the read-out area. Realistic drawings of the SiPM read-out boards are now included. Some highlights of the discussion:
- A thermal mat could be used if needed to help cool the boards. Currently it is not in the plan.
- There is spacer shown between the read-out boards for light tightening the counter volume.
- Bolt holes holding the SiPM boards (ST1) to the support tube will serve as positioners.
- A positioning template will be used when scintillators are attached to the foam to guarantee good alighnment with the SiPM's.
- There will be air gap between the scintillator and the SiPMs.
- There is currently a problem with interference of cable connector with support tube. A compromise with the target design will have to be struck.
SiPM Read-Out Boards
Fernando reported that the plan is to send out the design tomorrow. It should be in fabrication by next week.
Prototype News
Two scintillator samples came in from McNeal. One was badly crazed, but the other does not look so bad. Timing tests are next (for the good one).
TDR
Werner continues to working on the TDR
