PSATD: current correction works only with global FFTs (#1131)

* Clean up implementation of current correction:

- abort when current correction runs with psatd.periodic_single_box_fft=0
- rename input parameter from psatd.do_current_correction to psatd.current_correction
- add nodal tests in 2D and 3D (using direct current deposition)
- change 2D test: use Esirkepov deposition, instead of direct, as in 3D test
- add/update relevant checksum benchmarks

* Small clean-up

1 files changed, 2 insertions, 2 deletions

diff --git a/Python/pywarpx/picmi.py b/Python/pywarpx/picmi.py
index 6f4d7a4ba..df700a124 100644
--- a/Python/pywarpx/picmi.py
+++ b/Python/pywarpx/picmi.py
@@ -453,7 +453,7 @@ class ElectromagneticSolver(picmistandard.PICMI_ElectromagneticSolver):
         if self.method == 'PSATD':
             self.periodic_single_box_fft = kw.pop('warpx_periodic_single_box_fft', None)
             self.fftw_plan_measure = kw.pop('warpx_fftw_plan_measure', None)
-            self.do_current_correction = kw.pop('warpx_do_current_correction', None)
+            self.current_correction = kw.pop('warpx_current_correction', None)
 
     def initialize_inputs(self):
 
@@ -466,7 +466,7 @@ class ElectromagneticSolver(picmistandard.PICMI_ElectromagneticSolver):
         if self.method == 'PSATD':
             pywarpx.psatd.periodic_single_box_fft = self.periodic_single_box_fft
             pywarpx.psatd.fftw_plan_measure = self.fftw_plan_measure
-            pywarpx.psatd.do_current_correction = self.do_current_correction
+            pywarpx.psatd.current_correction = self.current_correction
 
             if self.stencil_order is not None:
                 pywarpx.psatd.nox = self.stencil_order[0]