Startup

script/FixedE.py

@@ -0,0 +1,37 @@
+
+
+RANGES = [(B1, B2, BSTEP),(B2,B1,-BSTEP)] 
+Bpoints = []
+for r in RANGES:
+    Bpoints = Bpoints + frange(r[0], r[1], r[2], True)
+
+
+scan = ManualScan(['Energy', 'Mag.'], ['I0', 'TEY', 'TFY'] , [min(ENERGIES), min(Bpoints)], [max(ENERGIES), max(Bpoints)], [len(ENERGIES)-1, len(Bpoints)-1])
+scan.start()
+
+for E in ENERGIES:
+    print "Setting energy = ", E
+    caput(OTF_ESET, E)
+    wait_channel(OTF_DONE, 1, type = 'i')
+    readback1  = energy.read()
+    if abs(readback1 - E) > 0.1 : # TODO: Check accuracy
+        raise Exception('Energy could not be set to the value ' + str(E))
+    sleep( ENERGY_CHANGE_SLEEP ) # Settling time
+
+    for B in Bpoints:
+        print "Setting field = ", B
+        caput("X11MA-XMCD:I-SETraw",B)
+        time.sleep( FIELD_CHANGE_SLEEP )     # Settling time
+
+        readback2 = caget("X11MA-XMCD:Ireadout")    
+
+        while abs(readback2-B) > FIELD_PRECISION:
+            readback2 = caget("X11MA-XMCD:Ireadout")
+            time.sleep(0.5)
+            
+        detector1 = keithley_1a.read() #Keithley1
+        detector2 = keithley_2a.read() #Keithley2
+        detector3 = keithley_3a.read() #Keithley3
+
+        scan.append ([E, B], [readback1, readback2], [detector1, detector2, detector3])
+        scan.end()