Merge remote-tracking branch 'michi42/patch-1' into release/0.72.1

xsuite · Dec 16, 2024 · e5321e2 · e5321e2
2 parents 57d0ad9 + 7b68e7b
commit e5321e2
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/xtrack/beam_elements/elements.py b/xtrack/beam_elements/elements.py
@@ -2447,6 +2447,10 @@ def from_line(cls, line, start, end, twiss_table=None,
             A `SecondOrderTaylorMap` object.
 
         '''
+        if start == end:
+            # start == end will lead to compute_one_turn_matrix_finite_differences() computing a
+            # full one-turn response matrix (but here we would rather expect identity)
+            raise NotImplementedError('end element must be after start element')
 
         if twiss_table is None:
             tw = line.twiss(reverse=False)