dry_run = True
do_elog = True

if get_exec_pars().source == CommandSource.ui:
    bph_ref_user = 19.0
    plt          = None
else:
    bph_ref_user = args[0]
    plt          = args[1]
phaseOffset_old = caget("SINEG01-RSYS:SET-VSUM-PHASE-OFFSET-BASE")
phaseOffset_new = 90 - bph_ref_user + phaseOffset_old
if not dry_run:
    caput("SINEG01-RSYS:SET-VSUM-PHASE-OFFSET-BASE", phaseOffset_new)
    caput("SINEG01-RSYS:CMD-LOAD-CALIB-BEAM", 1)
if do_elog:
    log_msg = "SINEG01-RSYS:SET-VSUM-PHASE-OFFSET-BASE:    %0.2f" % phase_offset_new + " deg        (was %0.2f" % phase_offset_old + " deg)\n"
    attachments = []
    if plt is not None:
        sleep(0.1) #Give some time to plot to be finished - it is not sync  with acquisition
        file_name = os.path.abspath(get_context().setup.getContextPath() + "/GunEnergyScanSet.png")
        plt.saveSnapshot(file_name , "png")
        attachments = [file_name]
    elog("Set gun phase", log_msg, attachments)
show_message("Success setting phase reference")