diff --git a/dap/accumulator.py b/dap/accumulator.py
index 40d5adc..f003283 100644
--- a/dap/accumulator.py
+++ b/dap/accumulator.py
@@ -31,10 +31,8 @@ def accumulate(_accumulator_host, accumulator_port): #TODO: accumulator_host is
     poller.register(accumulator_socket, zmq.POLLIN)
 
     run_name_before = "very_first_start"
-    fNameOutput = f"{OUTPUT_DIR_NAME}/{run_name_before}.dap"
-    if not os.path.isdir(os.path.dirname(fNameOutput)):
-        os.makedirs(os.path.dirname(fNameOutput))
-    outputDap = open(fNameOutput, "a")
+    fname_output = f"{OUTPUT_DIR_NAME}/{run_name_before}.dap"
+    output_dap = open_new_file(fname_output)
 
     n_frames_received = 0
 
@@ -42,29 +40,37 @@ def accumulate(_accumulator_host, accumulator_port): #TODO: accumulator_host is
         events = dict(poller.poll(10)) # in accumulator check for worker output every 0.01 seconds
 
         if accumulator_socket not in events:
-            outputDap.flush() # may be too intensive
+            output_dap.flush() # may be too intensive
             continue
 
         results = accumulator_socket.recv_json(FLAGS)
         n_frames_received += 1
 
-        pulse_id = results.get("pulse_id", 0)
-        run_name = str(pulse_id//10000*10000)
         detector = results.get("detector_name", "")
+        pulse_id = results.get("pulse_id", 0)
+        run_name = str(pulse_id // 10000 * 10000)
 
         if run_name != run_name_before:
             run_name_before = run_name
-            outputDap.close()
-            fNameOutput = f"{OUTPUT_DIR_NAME}/{detector}/{run_name_before}.dap"
-            if not os.path.isdir(os.path.dirname(fNameOutput)):
-                os.makedirs(os.path.dirname(fNameOutput))
-            outputDap = open(fNameOutput, "a")
+            fname_output = f"{OUTPUT_DIR_NAME}/{detector}/{run_name_before}.dap"
+            output_dap.close()
+            output_dap = open_new_file(fname_output)
 
-        pr_rois = results.get("roi_intensities", [])
-        print(pulse_id, results.get("is_good_frame", -1), results.get("is_hit_frame", False), results.get("number_of_spots", -1), results.get("laser_on", False), *pr_rois, file=outputDap)
+        res_is_good_frame   = results.get("is_good_frame", -1)
+        res_is_hit_frame    = results.get("is_hit_frame", False)
+        res_number_of_spots = results.get("number_of_spots", -1)
+        res_laser_on        = results.get("laser_on", False)
+        res_roi_intensities = results.get("roi_intensities", [])
+
+        print(pulse_id, res_is_good_frame, res_is_hit_frame, res_number_of_spots, res_laser_on, *res_roi_intensities, file=output_dap)
 
 
 
+def open_new_file(fname):
+    dname = os.path.dirname(fname)
+    os.makedirs(dname, exist_ok=True)
+    return open(fname, "a")
+