def put_chopper(v):
    #0 : "closed"
    #1 : "opened"
    caput("X11MA-ES1-CHOPP:TRG",1 if v else 0)
    
def get_chopper():
    #0 : "closed"
    #1 : "opened"
    return True if caget("X11MA-ES1-CHOPP:TRG") else False