&FORCE_EVAL
  METHOD Quickstep
  &DFT
    &PRINT
      &MOMENTS
         PERIODIC T
      &END
      &DERIVATIVES
      &END
    &END
    &QS
      METHOD xTB
      &xTB
         DO_EWALD T
      &END XTB
    &END QS
    &KPOINTS
       SCHEME  GAMMA
    &END
    &SCF
      EPS_SCF 1.e-7
      MAX_SCF 30
      &MIXING
          METHOD DIRECT_P_MIXING
          ALPHA   0.40
      &END
    &END SCF
    &PERIODIC_EFIELD
       POLARISATION 0 0 1
       INTENSITY 0.005
    &END
  &END DFT
  &SUBSYS
    &CELL
      ABC 4.0 4.0 4.0
    &END CELL
    &COORD
    O   0.000000    0.000000   -0.065587 H2O
    H   0.000000   -0.757136    0.520545 H2O
    H   0.000000    0.757136    0.520545 H2O
    &END COORD
  &END SUBSYS
&END FORCE_EVAL
&GLOBAL
  PROJECT H2O-field
  PRINT_LEVEL LOW
  RUN_TYPE DEBUG
&END GLOBAL
&DEBUG
   DEBUG_FORCES T
   DEBUG_STRESS_TENSOR F
   STOP_ON_MISMATCH T
   DX 0.0002
&END DEBUG

