Emergency Beam Stops

Each experimental hutch is equipped with 2 or 3 emergency beam stops. These are to be used in the unlikely event that you should be locked in an experimental hutch. Pressing the red button while the shutter is open will dump the storage ring, and stop the X-ray beam. The door can then be opened by pressing the top button on the auxiliary door control panel, and holding for three seconds. If the door does not open with a press of the top botton, press the bottom button to disengage it from the pneumatic system. You can then open the door manually.

If an emergency beam stop is inadvertently pressed while working in the hutch, it will not dump the ring, because the door will be open, and the shutter closed. However, it will disable your search boxes (see next slide), and must be pulled out in order to perform a search of the hutch.