diff --git a/adhoc.py b/adhoc.py
index 44ed640..8d07882 100644
--- a/adhoc.py
+++ b/adhoc.py
@@ -13,7 +13,7 @@ from slic.devices.xoptics.dcm import CoupledDoubleCrystalMonoEnergyWithTimeCorre
 
 from undulator import Undulators
 
-ENERGY_OFFSET = 0 # set the mono-undulators energy offset here!
+ENERGY_OFFSET = -2.382769246654334 # set the mono-undulators energy offset here!
 
 
 laser_pitch = SmarActAxis("SARES11-XICM125:ROX1")
@@ -33,6 +33,48 @@ XrayShutter = Shutter("SARFE10-OPSH059")
 
 
 
+class CCTA:
+
+    def __init__(self, ID):
+        self.ID = ID
+        self.pv_mode  = PV(ID + ":REPETITION-SP")
+        self.pv_nreps = PV(ID + ":NR-REPETITIONS-SP")
+        self.pv_go    = PV(ID + ":CTA-START-SEQ")
+        self.pv_pid   = PV(ID + ":seq0Ctrl-StartedAt-O")
+
+    def burst(n=1):
+        self.set_nreps(n)
+        self.set_mode_burst()
+        self.go()
+
+    def set_nreps(self, n):
+        self.pv_nreps.put(n)
+
+    def set_mode_continuous(self):
+        self.pv_mode.put(0)
+
+    def set_mode_burst(self):
+        self.pv_mode.put(1)
+
+    def go(self):
+        self.pv_go.put(1)
+
+    @property
+    def pid(self):
+        pid = self.pv_pid.get()
+        if pid is not None:
+            pid = int(pid)
+        return pid
+
+    def __repr__(self):
+        tn = type(self).__name__
+        return f"{tn} \"{self.ID}\" started at pulse ID {self.pid}"
+
+
+ccta = CCTA("SAR-CCTA-ESA")
+
+
+
 import requests
 
 class UndulatorEnergy(PVAdjustable):