Difference between revisions of "GlueX TOF Meeting, March 15, 2012"
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* The main support structure has been changed from a bent 1/2-inch plate to machined U-channel, where the basic stock is a standard item. This simplifies the manufacturing considerably, reducing it to machining one edge and possible straightening. | * The main support structure has been changed from a bent 1/2-inch plate to machined U-channel, where the basic stock is a standard item. This simplifies the manufacturing considerably, reducing it to machining one edge and possible straightening. | ||
| − | * Mark reported the concern about avoiding putting pressure on the scintillator to prevent crazing. This would mean support by the light guide only. Tim pointed out that there might be significant stresses on the scintillator even then and wondered if that was a worry. Mark agreed to look into this. | + | * Mark reported the concern about avoiding putting pressure on the scintillator to prevent crazing. This would mean support by the light guide only. |
| − | + | ** Tim pointed out that there might be significant stresses on the scintillator even then and wondered if that was a worry. Mark agreed to look into this. | |
| − | + | ** Chuck was concerned that the flat section of the light guide next to the scintillator was a bit narrow to be used to support the entire module, given other tolerances that might move the support area. The flat section is only about 1 cm wide. | |
| − | flat section | + | |
full scale model to see if support | full scale model to see if support | ||
1/4 scale full frame | 1/4 scale full frame | ||
Revision as of 16:56, 18 March 2012
Thursday, March 15, 2012
10:00 am EST
JLab: ARC, Room 428
Contents
Agenda
- Announcements
- Minutes from the last meeting
- Mechanical design: Tim, Chuck
- Prototype status: Paul, Sasha
- TDC choice: all
- Contract Status: Mark, Paul
- Calibration and Alignment discussion.
Communication
Videoconference
- ESNet: 8542553
- EVO: EVO site
Slides
Talks can be deposited in the directory /group/halld/www/halldweb1/html/talks/2012-1Q on the JLab CUE. This directory is accessible from the web at https://halldweb1.jlab.org/talks/2012-1Q/ .
Chairman's Cell Phone
(757)504-0664.
Minutes
Present:
- FSU: Sasha Ostrovidov
- JLab: Chuck Hutton, Mark Ito (chair), Tim Whitlatch
Prototype Status
Sasha working on attaching the light guides to the prototype in a removable manner.
Mechanical Design
Tim and Chuck have been working on changes from discussions at the last meeting. He remarked that good recommendations were offered by the FSU team.
- The main support structure has been changed from a bent 1/2-inch plate to machined U-channel, where the basic stock is a standard item. This simplifies the manufacturing considerably, reducing it to machining one edge and possible straightening.
- Mark reported the concern about avoiding putting pressure on the scintillator to prevent crazing. This would mean support by the light guide only.
- Tim pointed out that there might be significant stresses on the scintillator even then and wondered if that was a worry. Mark agreed to look into this.
- Chuck was concerned that the flat section of the light guide next to the scintillator was a bit narrow to be used to support the entire module, given other tolerances that might move the support area. The flat section is only about 1 cm wide.
full scale model to see if support 1/4 scale full frame aim for tuesday, for next design meeting 4 pm mon send out draft drawings
Action Items
- Look into issue of avoiding pressure on the scintillator. -> Mark
