Startup

script/local.py

@@ -2,3 +2,17 @@
 #  Deployment specific global definitions - executed after startup.py
 ###################################################################################################
 
+dtor = math.pi /180.0
+
+def A2E(t,h=1.0,k=1.0,l=1.0, deg =True, ln = False):
+    lncorr= 2.e-4 if ln else 0.0    
+    d0	=2 * 5.43102 *  (1.0-lncorr) / math.sqrt(h**2+k**2+l**2)
+    tt	=	(t * dtor) if (deg or (t>1.0)) else t
+    return 12.39842 / (d0*math.sin(tt))
+
+def get_energy():
+    t2 = caget("X06DA-OP-MO1:ROX2.RBV",'d')
+    e = A2E(abs(t2))
+    print 'Energy [keV]:'+ str(e) + '   Wavelength [A]:' + str(12.39842/e)
+    return e
+