diff --git a/src/daq/caen/n1081b.py b/src/daq/caen/n1081b.py
index 36972fe..bd25e91 100644
--- a/src/daq/caen/n1081b.py
+++ b/src/daq/caen/n1081b.py
@@ -76,13 +76,14 @@ def _poll_sections(self):
                 self._logger.info(f"No counters in section {section}")
                 continue
 
-            self._send_store_message(data)
+            self._send_store_message(data, section.name)
 
-    def _send_store_message(self, data: dict):
+    def _send_store_message(self, data: dict, section):
         self.message_out.put(
             DAQJobMessageStore(
                 store_config=self.config.store_config,
                 daq_job=self,
+                prefix=section,
                 keys=[f"lemo_{x['lemo']}" for x in data["counters"]],
                 data=[[x["value"] for x in data["counters"]]],
             )
diff --git a/src/daq/store/csv.py b/src/daq/store/csv.py
index cc3a2d0..1615e28 100644
--- a/src/daq/store/csv.py
+++ b/src/daq/store/csv.py
@@ -10,7 +10,7 @@
 from daq.models import DAQJobConfig
 from daq.store.base import DAQJobStore
 from daq.store.models import DAQJobMessageStore, DAQJobStoreConfig
-from utils.file import add_date_to_file_name
+from utils.file import modify_file_path
 
 DAQ_JOB_STORE_CSV_FLUSH_INTERVAL_SECONDS = 5 * 60
 DAQ_JOB_STORE_CSV_WRITE_BATCH_SIZE = 1000
@@ -48,7 +48,9 @@ def __init__(self, config: Any):
     def handle_message(self, message: DAQJobMessageStore) -> bool:
         super().handle_message(message)
         store_config = cast(DAQJobStoreConfigCSV, message.store_config)
-        file_path = add_date_to_file_name(store_config.file_path, store_config.add_date)
+        file_path = modify_file_path(
+            store_config.file_path, store_config.add_date, message.prefix
+        )
         file, new_file = self._open_csv_file(file_path)
 
         # Write headers if the file is new
diff --git a/src/daq/store/models.py b/src/daq/store/models.py
index 49b3155..fb3ecd4 100644
--- a/src/daq/store/models.py
+++ b/src/daq/store/models.py
@@ -22,6 +22,7 @@ class DAQJobMessageStore(DAQJobMessage):
     daq_job: DAQJob
     keys: list[str]
     data: list[list[Any]]
+    prefix: str | None = None
 
 
 @dataclass
diff --git a/src/daq/store/root.py b/src/daq/store/root.py
index 99ee19b..f8e5ae4 100644
--- a/src/daq/store/root.py
+++ b/src/daq/store/root.py
@@ -7,7 +7,7 @@
 from daq.models import DAQJobConfig
 from daq.store.base import DAQJobStore
 from daq.store.models import DAQJobMessageStore, DAQJobStoreConfig
-from utils.file import add_date_to_file_name
+from utils.file import modify_file_path
 
 
 @dataclass
@@ -34,7 +34,9 @@ def __init__(self, config: Any):
     def handle_message(self, message: DAQJobMessageStore) -> bool:
         super().handle_message(message)
         store_config = cast(DAQJobStoreConfigROOT, message.store_config)
-        file_path = add_date_to_file_name(store_config.file_path, store_config.add_date)
+        file_path = modify_file_path(
+            store_config.file_path, store_config.add_date, message.prefix
+        )
 
         if file_path not in self._open_files:
             file_exists = os.path.exists(file_path)
diff --git a/src/utils/file.py b/src/utils/file.py
index 9c9030c..a08dff6 100644
--- a/src/utils/file.py
+++ b/src/utils/file.py
@@ -2,12 +2,16 @@
 from datetime import datetime
 
 
-def add_date_to_file_name(file_path: str, add_date: bool) -> str:
-    splitted_file_path = os.path.splitext(file_path)
+def modify_file_path(file_path: str, add_date: bool, prefix: str | None) -> str:
+    split = os.path.splitext(file_path)
     date_text = datetime.now().strftime("%Y-%m-%d")
-    if len(splitted_file_path) > 1:
-        file_path = f"{splitted_file_path[0]}_{date_text}{splitted_file_path[1]}"
-    else:
-        file_path = f"{splitted_file_path[0]}_{date_text}"
+    if add_date:
+        if len(split) > 1:
+            file_path = f"{split[0]}_{date_text}{split[1]}"
+        else:
+            file_path = f"{split[0]}_{date_text}"
+    if prefix is not None:
+        head, tail = os.path.split(file_path)
+        file_path = os.path.join(head, f"{prefix}_{tail}")
 
     return file_path