diff --git a/app/dispersiontools.py b/app/dispersiontools.py
index ff2b6be..1ad4230 100644
--- a/app/dispersiontools.py
+++ b/app/dispersiontools.py
@@ -90,13 +90,13 @@ class Dispersion:
           # adjustable
           self.adjSV = 'SATCB01-RSYS:SET-BEAM-PHASE'
           self.adjRB = 'SATCB01-RSYS:GET-BEAM-PHASE'
-          self.adj = PVAdjustable(self.adjSV,pvname_readback = self.adjRB, accuracy = 0.1)
+          self.adj = PVAdjustable(self.adjSV,pvname_readback = self.adjRB, accuracy = 0.1,ID = self.adjSV, name = "SATCB01-Linac")
           self.amp = 30    # the amplitude of the scan, which can be scaled
           # acquisition
           sensor1 = getBSChannels('SATBD02-DBPM.*:Y2$')
           sensor2 = getBSChannels('SATCB.*-RLLE-DSP:.*-VS$')
           self.sensor = sensor1+sensor2
-          self.acq = [BSCAcquisition(".",pgroup, default_channels=self.sensor)]
+          self.acq = [BSAcquisition(".",pgroup, default_channels=self.sensor)]
           # auxiliar data to be read one
           self.aux = self.getRFCalibrationChannels(sensor2,'SATCL01-MBND100:ENERGY-OP')
 
@@ -115,7 +115,7 @@ class Dispersion:
           # adjustable
           self.adjSV = 'S30:SET-E-GAIN-OP'
           self.adjRB = 'S30:GET-E-GAIN-OP'
-          self.adj = PVAdjustable(self.adjSV,pvname_readback = self.adjRB, accuracy = 0.1)
+          self.adj = PVAdjustable(self.adjSV,pvname_readback = self.adjRB, accuracy = 0.1,ID = self.adjSV, name = "Linac3")
           self.amp = 20    # the amplitude of the scan, which can be scaled
           # acquisition
           sensor1 = getBSChannels('SAR.*DBPM.*:[XY]1$')
@@ -142,7 +142,7 @@ class Dispersion:
           # adjustable
           self.adjSV = 'S20:SET-E-GAIN-OP'
           self.adjRB = 'S20:GET-E-GAIN-OP'
-          self.adj = PVAdjustable(self.adjSV,pvname_readback = self.adjRB, accuracy = 0.1)
+          self.adj = PVAdjustable(self.adjSV,pvname_readback = self.adjRB, accuracy = 0.1,ID = self.adjSV, name = "Linac 2 and 3")
 #          self.adj2SV = 'S30:SET-E-GAIN-OP'
 #          self.adj2RB = 'S30:GET-E-GAIN-OP'
 #          self.adj2 = PVAdjustable(self.adj2SV,pvname_readback = self.adj2RB, accuracy = 0.1)
@@ -159,7 +159,7 @@ class Dispersion:
 
      def setup(self,scl = 1, Nsteps=5, Nsamples=5):
           val = self.adj.get_current_value(readback=False)
-          dval = self.amp*scl
+#          dval = self.amp*scl
           dval = 0     ######## edit this
           self.N = Nsteps
           self.Ns= Nsamples
@@ -180,10 +180,10 @@ class Dispersion:
           self.sc=self.scanner.ascan_list(self.adj,self.values,
                                           filename=self.branch,start_immediately = False,
                                           n_pulses=self.Ns,return_to_initial_values=True)
-#          self.preaction()   ######
+         # self.preaction()   ######
           self.sc.run()
-          self.auxdata = getAux(self.aux)
-#          self.postaction()  #######
+        #  self.auxdata = getAux(self.aux)
+        #  self.postaction()  #######
 
         
      def stop(self):
diff --git a/ext/bscacquisition.py b/ext/bscacquisition.py
index 21495ee..837ac55 100644
--- a/ext/bscacquisition.py
+++ b/ext/bscacquisition.py
@@ -1,42 +1,40 @@
-import zmq
+
 import h5py
+import numpy as np
 
-
-from bstrd import BSCache
 from slic.core.acquisition.acquisition import Acquisition
-from slic.core.acquisition import BSAcquisition, PVAcquisition
+
 
 # class using the BSQueue to avoid to reestablish a stream for each step.
 
 class BSCAcquisition(Acquisition):
             
-    def release(self):
-        if not self.queue == None:
-            del self.queue
-            self.queue = None
-
     def _acquire(self, filename, channels=None, data_base_dir=None, scan_info=None, n_pulses=100, **kwargs):
-        if not hasattr(self,'queue'):
-            self.queue = getStream(channels)
-        elif not self.queue:
-            self.queue = getStream(channels)
-            
-        self.queue.flush()
-        print('Acquiring',n_pulses,'samples')
-        data = []
+
+        queue =channels[0]  # abusing interface since BSAcquisition assume a list of channels
+
+        # allocating space
+        data={}
+        chns = queue.channels
+        for chn in chns:
+            data[chn]={'data':np.zeros((n_pulses))}
+        data['pulse_id']=np.zeros((n_pulses))
+
+        # clear the queue
+        queue.flush()
         for i in range(n_pulses):
-            data.append(self.queue.__next__())
+            msg = queue.__next__()   # pull data from cache
+            for chn in chns:
+                data[chn]['data'][i] = msg[chn]
+            data['pulse_id'][i]=msg['pid']
+
+        # write out the data file
         hid = h5py.File(filename,'w')
-        gid = hid.create_group(channels[0])
-        for key in data[0].keys():
-            gid.create_dataset(key, data = [rec[key].value for rec in data])
+        hid.create_dataset('pulse_id', data = data['pulse_id'])
+        for chn in chns:
+            gid = hid.create_group(chn)
+            for key in data[chn].keys():
+                gid.create_dataset(key, data = data[chn][key])
         hid.close()        
         
 
-def getStream(channels):
-    print('Generating stream with channels:',channels)
-    bs = BSCache(100000,10000)   # 1 second time out, capazity for 100 second.
-    bs.get_vars(channels)
-    return bs
-    
-