coincidence magnet
coincidence magnet
[kō′in·sə·dəns ‚mag·nət] (nucleonics)
An electromagnet used in one type of scram mechanism for a nuclear reactor; has three electrically independent coils and releases when any two coils are deenergized.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.