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[Sphenix-tracking-l] pruned magnetic field

From: Christof Roland <christof.roland AT cern.ch>
To: Hugo Pereira Da Costa via sPHENIX-tracking-l <sphenix-tracking-l AT lists.bnl.gov>
Subject: [Sphenix-tracking-l] pruned magnetic field
Date: Mon, 2 May 2022 23:11:03 +0200

Hi,

I took our field map and cut it down to size to just include the tracking
volume ( |z| < 110cm, r < 100cm).
I have one version keeping the original cell size of 2x2x2 cm, this reduces
the file size to the ~3% Jin already quoted.
There is also a version with 4x4x4cm cells, this may be overdoing it a little
bit, but worth trying. This reduces the volume to 0.4%.

The corresponding files can be found in /phenix/u/bogui/data/Field/
sphenix3dbigmapxyz.root
sphenix3dtrackingmapxyz.root
sphenix3dtrackingmapxyz_step4.root

If anybody wants to give it a try, feel free to grab the files.
If not, I'll give it a shot tomorrow.

Cheers

Christof

[Sphenix-tracking-l] pruned magnetic field, Christof Roland, 05/02/2022