ID_ENERGY = 1250



# energy at which the ID offset should be determined
#========================
HALFWIDTH = 10
STEP = 0.5
    
#========================
try:
    caput('X07MA-PHS-E:OPT', 'PGM')
    energy_id.write(ID_ENERGY)    
    wait_device(energy_done, 1 )
  
    def before(position, scan):
        #wait_device(energy_done, 1 )
        sleep( 0.3 ) # Settling time              
    
    #ret = lscan(energy, [signal_i0, signal_tey, 'ca://X07MA-PC-K428:2:getTotalGain', 'ca://X07MA-ID:MODE?type=d', pol_angle, current, energy, pol_offset, 'ca://X07MA-ID-GAP:READ','ca://X07MA-ID-SHIFT:READ'], ID_ENERGY-HALFWIDTH, ID_ENERGY+HALFWIDTH, STEP, before_read = before)
    ret = lscan(energy, [signal_i0, signal_tey, 'ca://X07MA-PC-K428:2:getTotalGain', energy], ID_ENERGY-HALFWIDTH, ID_ENERGY+HALFWIDTH, STEP, before_read = before)
    xdata = ret.getPositions(0)
    ydata = ret.getReadable(0)
    ymin = min(ydata)
    xminmin = xdata[ydata.index(min(ydata))]
    print "Emin=",xminmin,"ymin = ",ymin
    caput('X07MA-PHS-E:OPT', 'PGM+ID')
    
except:   
    print("Aborting...") 
    caput('X07MA-PHS-E:OPT', 'PGM+ID')
    raise