The beamline elements are in radiation shielding enclosures, called hutches, which are the size of a small room (cabin). A typical beamline consists of two hutches, an optical hutch for the beam conditioning elements and an experimental hutch, which houses the experiment. Between hutches, the beam travels in a transport tube. People are not allowed to enter hutches when the beam shutter is open and radiation can enter the hutch. Hutches have complex safety systems with redundant interlocking functions to make sure that no one is inside the hutch when the radiation is turned on. The safety system will also shut down the radiation beam if the door to the hutch is accidentally opened when the beam is on. In this case, the beam is turned off by dumping the electron beam circulating in the synchrotron. So, opening one door will shut down all of the beamlines in the facility.