[Clas12_software] Adding HTCC to Reconstruction

Mac Mestayer mestayer at jlab.org
Mon Jul 27 14:46:44 EDT 2015


Hello Whitney;

Some quick answers; I'll be on vacation and back on Tuesday, Aug 4.

- the DC decoder contains the map for the DC from crate,slot,channel
to sector.layer,wire.  Gagik has that code.

- simulating the DAQ and trigger in general is a big job.  If you want
to do it, you will have to talk with Maurizio Ungaro and with Sergey
Boiarinov.

 				- Mac

"mestayer at jlab.org", (757)-269-7252

On Mon, 27 Jul 2015, Whitney R. Armstrong wrote:

> Hi Mac,
>
> Thank you for your response. I have added some comments and questions below. 
> On Fri, Jul 24, 2015 at 04:55:09PM -0400, Mac Mestayer wrote:
>> On Fri, 24 Jul 2015, Whitney R. Armstrong wrote:
>>> 2. If we want to take the digitization one step further, we should use the 
>>> translation tables to emulate the DAQ output. Where can I find the latest 
>>> translation tables for the DAQ?
>> ----------------------------------------------------------------------------------
>> We have enough work to do without emulating the DAQ.
>> We are of course now taking 'real' cosmic ray data which is identified by
>> 'crate,slot,channel' and is decoded into 'sector,layer,component'.  I'm
>> not sure how you will fit the HTCC into 'sector,layer,component' but if
>> can abstract your pmt's into a 3-d structure, you can talk to Gagik and
>> he'll tell you how to do it.
>
> I understand this. My idea for a digitization step was to emulate the DAQ 
> behavior. For example, the various Sub-System Processors and the Global 
> Trigger Processor's simple logic can be simulated.
>
> Could you point me to a good 'real' cosmic data file that I could look at?
>
>>> 3. I would imagine these translation tables are going to changed 
>>> frequently as
>>> commissioning begins. Would it be good idea to store them in a git 
>>> repository, so every little change is documented and accounted for, and 
>>> easily shared?
>> -----------------------------------------------------------------------------
>> Our previous experience is that this one of the most stable parts of the
>> whole data -> analysis chain and will not change frequently.
>
> Great. Where can I find all the crate/slot/channel maps?
>
> Cheers,
> Whitney
>
>
>



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