[Halld-offline] DBCALIncidentParticle

Fri Mar 4 13:07:17 EST 2016

It was more to do with how the simulation was done (10 layers vs. 4 
summed layers, etc.).  I think the simulation side was fine.

On 04.03.2016 12:00, Richard Jones wrote:
> Teagan,
>
> What feature of the simulations made this information difficult to
> use? Was the particle id giving not giving the correct information?
>
> -Richard Jones
>
> On Fri, Mar 4, 2016 at 12:44 PM, beattite <beattite at uregina.ca [25]>
> wrote:
>
>> Hello.
>>
>> Yes, we intended to use this information to apply sampling fraction
>> smearing based on incident particle type, though it never got off
>> the ground.  We were trying to implement this for photons recently,
>> but the simulation was done in a way that made the implementation
>> more difficult than expected, so for the moment, we've stopped
>> working on it.  We're weren't yet sure if we wanted to pursue this
>> (by re-doing some of the simulations) or not.
>>
>> On 04.03.2016 09:03, Zisis Papandreou wrote:
>>
>>> Hi gents: my impression is the same as Richard’s and David’s.
>>> When
>>> Tegan comes in this morning I’ll have him comment as well.
>>> Cheers,
>>> Zisis...
>>>
>>>> On Mar 4, 2016, at 8:36 AM, David Lawrence <davidl at jlab.org [6]
>>>> [8]>
>>>> wrote:
>>>>
>>>> Hi All,
>>>>
>>>> Richard is correct. The intent was to use this information in
>>>> mcsmear to determine adjustments
>>>> to the BCAL response based on simulations Andrei did some years
>>>> ago.
>>>> I thought that Tegan
>>>> was working on this recently (within the last few months). I
>>>> don’t
>>>> know what the status is though.
>>>>
>>>> Regards,
>>>> -David
>>>>
>>>> On Mar 4, 2016, at 9:03 AM, Richard Jones
>>>> <richard.t.jones at uconn.edu [7]
>>>> [9]> wrote:
>>>>
>>>>> Mark,
>>>>>
>>>>> From the name, I infer that this is an object that captures
>>>>> the
>>>>> information from the <bcalTruthIncidentParticle> tag in the
>>>>> simulation event hddm record. Any time a particle in the MC
>>>>> simulation enters the bcal through the inner surface, its
>>>>> coordinates, type, and momentum are recorded in a
>>>>> <bcalTruthIncidentarticle> tag that gets added to the output
>>>>> event. At the same time, a stamp is placed on that particle
>>>>> so
>>>>> that neither it nor any secondaries descended from it can
>>>>> create
>>>>> further bcalTruthIncidentParticles. This keeps shower
>>>>> particles
>>>>> from getting appended to the list and making it confusing to
>>>>> interpret.
>>>>>
>>>>> I am not sure nowadays who might be making use of that
>>>>> information, but it has a clear meaning and is potentially
>>>>> useful
>>>>> in Monte Carlo studies for computing efficiencies and
>>>>> adjusting
>>>>> matching windows, etc.
>>>>>
>>>>> -Richard Jones
>>>>>
>>>>> On Fri, Mar 4, 2016 at 7:58 AM, Mark Dalton <dalton at jlab.org
>>>>> [3] [5]>
>>>>> wrote:
>>>>>
>>>>>> Hi guys,
>>>>>>
>>>>>> Is anyone aware of what the intent of the
>>>>>> DBCALIncidentParticle
>>>>>> class was and whether it is being used for anything?
>>>>>>
>>>>>> Best,
>>>>>> Mark Macrae Dalton
>>>>>>
>>>>>> --
>>>>>> Staff Scientist, Jefferson Lab
>>>>>> office: +1 757 269 6931 [1]
>>>>>> mobile: +1 757 849 2929 [2]
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>>> Dr. Zisis Papandreou
>>> Professor of Physics, Ph.D., P.Phys.
>>> ---------------------------------------------------------
>>> Department of Physics
>>> University of Regina
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>>> Regina, SK S4S 0A2 CANADA
>>>
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>>> Email: zisis at uregina.ca [11] [11]
>>>
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>>>
>>>
>>
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>>
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