[Clas12_high_luminosity] Simulation Update

burkert burkert at jlab.org
Thu Feb 11 08:37:45 EST 2016


Hi Whitney,

Could you produce a graph similar to the one from Maurizio (attached) 
showing where along the beamline (z-coordinate) the chamber hits 
originate from.

Volker


On 2/11/16 1:41 AM, Whitney R. Armstrong wrote:
> Dear Collaborators,
>
> First, I have posted some follow-up slides to our discussion on 
> Monday. The new plots have a hit definition that is consistent with 
> Maurizio's.
> You can find my slides and the follow slides at 
> https://clasweb.jlab.org/wiki/index.php/CLAS12_High_Luminosity_-_February_8,_2016
>
> Secondly, as suggested by Latifa, I have performed a self consistency 
> check using the beam on target method previously used. Furthermore, I 
> am using the same beamline geometry as Maurizio, who has graciously 
> provided a GDML version of the geometry.
>
> Please see the following page for the latest results and discussion of 
> the simulations. 
> https://clasweb.jlab.org/wiki/index.php/CLAS12_Drift_Chamber_Occupancy_Simulations
>
> So far the main conclusions are that my simulation is self consistent, 
> and perhaps more importantly, I am getting significantly larger DC 
> occupancies.  The cause of this discrepancy remains unclear.
>
> Any comments or questions are greatly appreciated.
>
> Cheers,
> Whit
>
>

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