[Hps-ecal] Calorimeter Status

[Kyle McCarty]

Hello hps-ecal group,

Thank you for your input. I have attached an updated version of the talk. I
tried to include all of the suggestions I received, as well as added some
clarification from Ben. Changes include:

- Title page updated to specify that the trigger is the topic.
- NSB was rescaled on the pulse example to be 1/6 the length of NSA so it
would be to scale.
- Values for NSB (5 clock cycles) and NSA (30 clock cycles) were added to
give a better idea of how long these actually are.
- The number of snapshots employed (currently 3) was added to the
clustering section.
- A full break down of the values of each trigger and cluster cut was
added. These are the same values as were used for the generating the
cluster center histograms.
- A discussion of what the various values in the energy slope formula
represent was added.
- A "work that still needs to be done" page was added to the end.
- Sho's addendum was added.

Concerning the number of component hits trigger cut, I reworded it a bit.
What I meant was that the test run we took awhile back with the old
hardware did include that trigger, but it was planned for the production
runs coming up. Basically, it is new to the updated hardware.

Also, the new data I said I would add has finished running, but I haven't
formatted it nicely yet, so this is still the old different geometry data.
I'll have the better data in for the actual talk. A' acceptance rates may
be added in as well, if I am able to run and process them in time.

Let me know if I broke anything with this update or if there is still more
that needs to be reworked/added/removed.

Thanks,

Kyle


On Tue, Apr 1, 2014 at 12:07 PM, Sho Uemura <meeg at slac.stanford.edu> wrote:

> On slide 6 it would be good to say that while there is this 32 ns dead
> time, that is usually insignificant compared to the dead time associated
> with the input signal staying above threshold.
>
> The FADC will not see a second pulse unless there has been time for the
> signal to fall back below threshold; this time depends on the threhsold and
> the first hit's amplitude but will very often be greater than 32 ns.
>
>
> On Tue, 1 Apr 2014, Garcon Michel wrote:
>
>  Kyle,
>>
>>                In addition to Stepan's remarks :
>>
>> -          One understands which one applies at any time, but avoid
>> confusion between volt, energy and ADC value when talking about the pulse
>> shape.
>>
>> -          P.10 energy slope: Emin here is not the same as in the energy
>> sum condition. Is it not min(Etop, Ebottom) ? And could you remind us (me)
>> of the definition of Rmin ?
>>
>> -          Could you add a table of values of parameters used so far in
>> your simulation for 2.2 and 6.6 GeV.
>>
>> -          In conclusion, a slide sketching the next steps of your work.
>> Is it optimization of cuts using simulated data? Trigger rates and trigger
>> efficiency for A' events ? Or else?
>> Some of my remarks may stem from the fact that I am a newcomer in the
>> game.
>>
>> Yours,
>> Michel.
>>
>> _______________
>> Michel Garçon
>> Irfu/SPhN
>> CEA-Saclay, bât. 703
>> 91191 Gif-sur-Yvette cedex
>> France
>> Tél.: +33 1 69 08 86 23
>>
>> Until October 31st, on leave at
>> Jefferson Lab
>> Office in CC-B129
>> Phone : +1 757 269 7636
>>
>>
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