[Halld-pid] Time-of-Flight Meeting Minutes, January 13, 2014

[Mark M. Ito]

Folks,

Find the minutes below and at

https://halldweb1.jlab.org/wiki/index.php/GlueX_TOF_Meeting,_January_13,_2015#Minutes 
.

   -- Mark
__________________________


GlueX TOF Meeting, January 13, 2015
Minutes


 Present:

  * *FSU*: Hussein Al Ghoul, Brad Cannon, Paul Eugenio, Sasha
    Ostrovidov, Aristeidis Tsaris

  * *JLab*: Mark Ito (chair), Beni Zihlmann





Announcements


 We will likely run again starting in early April for five weeks. There 
is a chance that beam may come to the Hall as early as early March. The 
plan is to have the detector ready for running by the beginning of March. 


Calibration


 Sasha is working on time-walk corrections to reduce the number of 
parameters for the channel-by-channel calibrations. 


FADC Voltage Range


 From Sasha's talk at the Run Coordination meeting last year, we see 
that there are a substantial number of overflows in the FADC data. We 
discussed whether it was better to reduce the PMT voltage to get more 
pulses into range. The downside there is that we may give up timing 
resolution. On the other hand lower voltage will extend the lifetime of 
the PMTs. In the end we decided to ask Fernando to increase the range 
from 1 V to 2 V. Fernando has already solicited work lists from the 
group; we will be coming a bit late to the process. 


Equipment Loan


 The extension of the loan of equipment from JLab to FSU (Loan 
TJNAF#44283) has received all approvals. The loan runs for a year. 


Tasks to Prepare for the Next Run


 We identified several basic tasks/procedures that either did not get 
done or were not developed to completion, including a discriminator 
threshold scan and a procedure for gain equalization. We agreed to come 
prepared with a list to discuss at the next meeting. 


Collaboration Meeting


 FSU will nominate a speaker for the upcoming meeting. 


Next Meeting


 We agreed to meet again in a week. It looks like weekly meetings might 
be appropriate between now and the next run.

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