[Clas_cascades] simulation time problem?

[Zhiwen Zhao]

This is part of checking the simulation
I think timing can only can be checked after cooking, how to check it otherwise?

Zhiwen

On 4/22/2010 9:32 AM, Kijun Park wrote:
> Zhiwen Zhao wrote:
>> Hi, All
>>
>> http://clasweb.jlab.org/rungroups/eg3/wiki/index.php/Eg3_simulation
>> I add more plots and description, particular the plots use vertex time
>> calculated without vertex term.
>>
>> I still think the time in SCPB is calibrated TOF time so it can be
>> used in the formula without additional "starttime" mentioned by Stepan.
>>
>> For data, the photon time in tagger is calibrated at target center, so
>> to compare it to particle vertex time, the vertex term is needed. For
>> sim, if I use photon time at target center, the vertex term is needed
>> too. As shown in those plots,the vertex term will make peak sharper
>> and nicer for data and sim.
>>
>> The main problem I have now is the time diff is not centered around 0
>> for sim, I will need photon time = (-56)/c_light to make that happen(
>> please refer to the plots). This makes me wonder either some of my
>> understanding is wrong or my simulation configuration is wrong.
>>
>> Please comment.
>>
>> Thanks a lot
>>
>> Zhiwen
>>
>>
>>
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> Hi, Zhiwen.
> Just curious, did you check out your simulation in each step (event
> generator-> gsim -> gpp->recsis) ?
> You are sure you have reasonable output after each step. correct ?
> Kijun
>