GlueX TOF Meeting, August 30, 2012
GlueX TOF Meeting
Thursday, August 30, 2012
10:00 am EDT
JLab: CEBAF Center, F326
Contents
Agenda
- Announcements
- Review of last TOF bi-weekly meeting
- Mechanical design
- Prototype status
- TDC Purchase
- Contract 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, Randall Smith, Ian Winger
- JLab: Fernando Barbosa, Mark Ito (chair), Tim Whitlatch, Beni Zihlmann
Re-cap of Last Meeting
Paul summarized items discussed at the last meeting, on August 16.
- There was a short discussion of items purchased
- FSU gave an update on mini-TOF construction
- There was discussion of changing materials due to length and weight.
- Sasha presented ideas on calibration.
Electronics
TDC Purchase
Fernando reported.
- The TDCs have been ordered.
- Signal distribution issues need to be planned, in particular, additional modules need to be built by us. Hall B has prototypes of these boards but Sergey Boyarinov thinks a new design is needed.
Flash ADCs and the Prototype
Paul expressed interest in gaining experience with flash ADCs.
- FSU has a VME 64X crate with pins removed for to accomodate the serial connector on the Flash 250. With this set-up one must use the internal clock on the module or provide external clock signals. Since only one ADC is needed for this exercise, the internal clock should be fine.
- Fernando will look and see what is available.
- Production units will go to UMass in a month, he hopes that we can receive tested modules from UMass in late October. These will add to the supply.
Mini-TOF Update
Randall
package of bent plates arrived, some may not work not stainless making light guides long versions made for first time pmt sleeves completed shield holders completed all light guides manufactured more material requested mark will order
paul and ian will meet on glueing fixture for 5 paddles at once box of plates delivered to old central receiving
Contract Status
Calibration and Alignment
A new version of the calibration document will be distributed shortly.