IMPIANTO DI CONTROLLO DIGITALE PER GENERATORI DI NEUTRONI PER L'IMPIEGO NELLA PROSPEZIONE DI FORI DI TRIVELLAZIONE

A pulsed neutron well logging system using a sealed off neutron generator tube is provided with a programmable digital neutron output control system. The control system monitors the target beam current and compares a function of this current with a preprogrammed control function to develop a control...

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Bibliographische Detailangaben
Hauptverfasser:	BRIDGES JAMES ROBERT, SLOUGHTER WILLIAM JORDON, PEELMAN HAROLD ELMER
Format:	Patent
Sprache:	ita
Schlagworte:	DETECTING MASSES OR OBJECTS ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GEOPHYSICS GRAVITATIONAL MEASUREMENTS MEASURING PHYSICS PLASMA TECHNIQUE PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OFNEUTRONS PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMICBEAMS TESTING
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Beschreibung
Zusammenfassung:	A pulsed neutron well logging system using a sealed off neutron generator tube is provided with a programmable digital neutron output control system. The control system monitors the target beam current and compares a function of this current with a preprogrammed control function to develop a control signal for the neutron generator. The control signal is used in a series regulator to control the average replenisher current of the neutron generator tube. The programmable digital control system of the invention also provides digital control signals as a function of time to provide ion source voltages. This arrangement may be utilized to control neutron pulses durations and repetition rates or to produce other modulated wave forms for intensity modulating the output of the neutron generator as a function of time.