Difference between revisions of "GlueX TOF Meeting, September 27, 2012"
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* Materials are arriving for the gluing jig. | * Materials are arriving for the gluing jig. | ||
* Specifications for the scintillator were sent to Eljen and Saint Gobain. Paul has only heard back from Eljen. | * Specifications for the scintillator were sent to Eljen and Saint Gobain. Paul has only heard back from Eljen. | ||
− | * The AJ200 scintillator is being produced at Eljen on revamped machines. We can get scintillator from them sooner than anticipated, within six weeks of order. | + | * The AJ200 scintillator (new designation) is being produced at Eljen on revamped machines. We can get scintillator from them sooner than anticipated, within six weeks of order. |
* Additional quotes were requested for UVT acrylic rods. Paul found a company that can provide the same material as the vendor we have been using, but with a better delivery schedule. 240 feet can be delivered in six weeks. Two rods have been purchased from the new company. They will be evaluated. Elton suggested using a laser and visually observing the amount of scattering to do a quick comparative/qualitative evaluation with respect to the material already in hand. | * Additional quotes were requested for UVT acrylic rods. Paul found a company that can provide the same material as the vendor we have been using, but with a better delivery schedule. 240 feet can be delivered in six weeks. Two rods have been purchased from the new company. They will be evaluated. Elton suggested using a laser and visually observing the amount of scattering to do a quick comparative/qualitative evaluation with respect to the material already in hand. | ||
* Paul is trying again to get ESR daylighting film from 3M in long rolls rather than small sheets. | * Paul is trying again to get ESR daylighting film from 3M in long rolls rather than small sheets. |
Revision as of 16:50, 28 September 2012
GlueX TOF Meeting
Thursday, September 27, 2012
10:00 am EDT
JLab: CEBAF Center, F326
Contents
Agenda
- Announcements
- Review of last TOF bi-weekly meeting
- Mechanical design
- Contract status -> EVMS status
- Calibration and Alignment
- Technical Design Report contribution
Communication
Videoconference
- ESNet: 8542553
- EVO: EVO site
- meeting link
- Phone bridge ID: 13 7104
Slides
Talks can be deposited in the directory /group/halld/www/halldweb1/html/talks/2012-3Q
on the JLab CUE. This directory is accessible from the web at https://halldweb1.jlab.org/talks/2012-3Q/ .
Minutes
Present:
- FSU: Paul Eugenio, Sasha Ostrovidov
- JLab: Chuck Hutton, Mark Ito (chair), Elton Smith, Tim Whitlatch, Beni Zihlmann
Mini-TOF Construction
Paul reports that construction materials are coming in. There was a delay on a large steel channel, which we are getting from a company near the Lab. We had to buy a 20 foot piece though only 10 is needed.
TOF Procurements
- Materials are arriving for the gluing jig.
- Specifications for the scintillator were sent to Eljen and Saint Gobain. Paul has only heard back from Eljen.
- The AJ200 scintillator (new designation) is being produced at Eljen on revamped machines. We can get scintillator from them sooner than anticipated, within six weeks of order.
- Additional quotes were requested for UVT acrylic rods. Paul found a company that can provide the same material as the vendor we have been using, but with a better delivery schedule. 240 feet can be delivered in six weeks. Two rods have been purchased from the new company. They will be evaluated. Elton suggested using a laser and visually observing the amount of scattering to do a quick comparative/qualitative evaluation with respect to the material already in hand.
- Paul is trying again to get ESR daylighting film from 3M in long rolls rather than small sheets.
TOF Construction
- The gluing jig has been redesigned to allow gluing of nine modules at a time, with adequate spacing between modules.
- Ian Winger is working on a jig to help with smoothing the wrapping operation. A U-channel will hold the wrapping and scintillator.
- Paul has been doing tests with RTV for mounting attaching the PMT's to the light quides. He got two types, RTV 615 and RTV 655, from Momentum Products (a spin-off of GE silicon). RTV 615 has been used at other experiments. Initial tests look good, a twenty pound weight was suspended from the far end of the PMT and the joint held. The PMT was removed with a razor blade and the surfaced cleaned up nicely with Kimwipes and silicone solvent.