The Role of the 'Red Key' in the NTF Safety System

The Review Committee which studied the document entitled 'The NTF Interlock Box' requested more detailed information on the exact role of the red key labeled NTF Reset and Enable. This document is being written in response to that request. It should be considered an appendix to the earlier document and is best understood if one has already studied the earlier document including its Figures 1 and 2. As before, this is intended to give a basic understanding of how the system works. Detailed information of the type needed to build or repair a module is available on drawings to be specified later. The key plays two distinct roles. First, it is used to secure the NTF radiation areas. Second, it is used to turn on and control the ramp signals to the 58° and 32° magnet power supplies.