Pulse width regulator for a pulsed neutron source

Details Pulse width regulator for a pulsed neutron source Pulse width regulator for a pulsed neutron source

1975-02-13

1976-10-05

Dixon, Harold A.

Radiant energy

Radiant energy generation and sources

With radiation modifying member

250286, 328112, G21G 402

Patent

active

039846946

ABSTRACT:
A pulsed neutron system includes an accelerator tube having a target, an ionization section, and a replenisher for supplying accelerator gas. The power supplied to the replenisher is controlled to maintain the ionization pulse time duration within the upper and lower limits of a time window. A comparator compares the ionization pulse time duration to the upper and lower limits of the time window and produces an output pulse which is utilized by an operational amplifier to operate a stepping motor in one direction if the ionization pulse time duration exceeds the upper limit of the time window and in a reverse direction if the ionization pulse time duration is below the lower limit of the time window. The stepping motor positions a variable autotransformer which increments the voltage applied to the replenisher to change the ionization pulse time duration if it does not fall within the upper and lower limits of the time window.

REFERENCES:
patent: 3151243 (1964-09-01), Mott
patent: 3500369 (1970-03-01), Kellam
patent: 3657539 (1972-04-01), Pierson
patent: 3719827 (1973-03-01), Dennis
patent: 3760281 (1973-09-01), Hogg

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