[Halld-cal] Independent Pulser signals to the FCAL

[Elton Smith]

Hi John and Matt,

Thanks for the input. We will go ahead with the current plan, which 
means all panels will be pulsed at the same time. I note that even  
under this configuration one would be able to pulse one panel at a time 
for tests by unplugging the cable that goes to particular panels.

Thanks, Elton.

Elton Smith
Jefferson Lab MS 12H5
12000 Jefferson Ave STE 16
Newport News, VA 23606
(757) 269-7625
(757) 269-6331 fax

On 11/20/13 7:45 AM, leckey at jlab.org wrote:
> I agree, I can not see where it would be useful.  Also, with the edges
> painted plack, little if any of the light should escape from one plane to
> another.
>
> John
>
>
>> Elton,
>>
>> I can't think of any particular advantage this provides.  We can read out
>> only part of the detector at a time, if desired, by only turning on HV to
>> a subset of the PMTs.
>>
>> The only thing I can imagine doing with such a configuration is
>> determining, for those cells near the boundary, how much light comes from
>> one pane versus another.  Note that the boundary between panes is arranged
>> to be on a cell boundary, so there should not be much light from multiple
>> panes making it into I single block.
>>
>> I can't come up with a instance where one would want to know this.
>>
>> Matt
>>
>> ---------------------------------------------------------------------
>> Matthew Shepherd, Associate Professor
>> Department of Physics, Indiana University, Swain West 265
>> 727 East Third Street, Bloomington, IN 47405
>>
>> Office Phone:  +1 812 856 5808
>>
>> On Nov 19, 2013, at 3:34 PM, Elton Smith <elton at jlab.org> wrote:
>>
>>> Hi Matt and John,
>>>
>>> We are about to populate the transition board for the FCAL monitoring
>>> system. The plan was to have a single board, which would send each
>>> trigger signal to all four quadrants at the same time. It turns out that
>>> if we use four boards (we have extras) and populate in a limited way, we
>>> could pulse different quadrants separately. This is a little more
>>> complicated, but I would like your views on whether it is worth the
>>> extra flexibility.
>>>
>>> Thanks, Elton.
>>>
>>> --
>>> Elton Smith
>>> Jefferson Lab MS 12H5
>>> 12000 Jefferson Ave STE 16
>>> Newport News, VA 23606
>>> (757) 269-7625
>>> (757) 269-6331 fax
>>>
>>
>