diff --git a/script/jan/hyst_Dy.py b/script/jan/hyst_Dy.py
index 73fb9ed..b309377 100644
--- a/script/jan/hyst_Dy.py
+++ b/script/jan/hyst_Dy.py
@@ -6,7 +6,7 @@ e2 = 1283.0        # energy 2 (pre edge)
 
 B1 = 4.0            # field span
 B2 = -B1
-nr_loops = 5        # number of loops to acquire
+nr_loops = 1        # number of loops to acquire
 
 
 open_valve()