[Halld-pid] Time-of-Flight Meeting Minutes, August 30, 2012

[Mark M. Ito]

Good Timers,

Find the minutes at

https://halldweb1.jlab.org/wiki/index.php/GlueX_TOF_Meeting,_August_30,_2012#Minutes

and below.

   -- Mark
_____

GlueX TOF Meeting, August 30, 2012
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 and Ian gave the update.
      * The package of bent plates arrived from JLab, but some may not
        work. They were not stainless as expected. More individual plates
        may have to be made.
      * They are making lightguides. The long versions have been made for
        the first time.
      * PMT sleeves have been completed.
      * Shield holders have been completed.
      * Some more raw more materials are needed. Paul had transmitted the
        list to Mark. He will place the order.
      * This afternoon Paul and Ian will meet to discuss the gluing fixture
        for assembling five paddles at once.

Contract Status

    Mark reported that the final version of the contract should be going to
    FSU today for signature.

Calibration and Alignment

    A new version of the calibration document Sasha presented last time
    will be distributed shortly.

Technical Design Report Contribution

    Paul will devote some more effort to this, so as not to fall too far
    behind the standard being set by the CDC and FDC groups.

    Retrieved from
"https://halldweb1.jlab.org/wiki/index.php/GlueX_TOF_Meeting,_August_30,_2012"

-- 
Mark M. Ito
Jefferson Lab (www.jlab.org)
(757)269-5295