[Halld-offline] DBCALIncidentParticle

[beattite]

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 [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
>> [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 [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
> 3737 Wascana Parkway
> Regina, SK S4S 0A2 CANADA
>
> PHONE: (306) 585-5379Fax: (306) 585-5659
> Email: zisis at uregina.ca [11]
>
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