Sphenix-calibration-l mailing list

[Hugo Pereira Da Costa <hugo.pereira-da-costa AT cea.fr>]

Hello Christoph,

Including distortions are supported in our latest default macros 
(macros/detectors/sPHENIX/Fun4All_G4_sPHENIX.C)

1/ To turn the static and time-average distortions on, you need to add

G4TPC::ENABLE_STATIC_DISTORTIONS = true;

the default static distortion file only contains beam-induced, time 
average distortions. If you want to also include those from the field, 
you need to also set:

G4TPC::static_distortion_filename = 
"distortion_maps/average.rev3.1side.3d.file0.h_negz.real_B1.4_E-400.0.ross_phi1_sphenix_phislice_lookup_r26xp40xz40.distortion_map.hist.root";

(or, better, make a local copy of the same file and pass it to the 
macro. I will probably commit this file to the official 
$CALIBRATION_MAIN some time today in order not to have to rely on 
private copies)

2/ to turn on event by event fluctuations

G4TPC::ENABLE_TIME_ORDERED_DISTORTIONS  = true;


In principle you can turn on both static and event-by-event 
fluctuations, but you need to make sure that there is no double-counting 
between the two sets of input files

Right now the default provided file for the event-by-event fluctuations, 
/gpfs/mnt/gpfs02/sphenix/user/klest/TimeOrderedDistortions.root
has 90 maps only. I do not know if there are more somewhere (Ross and 
Henry would know better).
Also, I do not know which kind of distortions are in there. Full event 
by event distortions ? beam-induced distortions only ? Fluctuations 
around time-averaged distortions ?

I have never ran anything with the event-by-event fluctuations turned on.

Hope this helps,

Hugo


On 12/14/20 6:19 AM, Christof Roland wrote:
> Hi Hugo and Ross,
>
> do you have a simple example for running a few 1000 events with full 
> distortions
> and no corrections? This is for the event compression studies.
>
> Thanks
>
>     Christof