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US 4,381,450 AGranted
Pulsed radiation dosimetry apparatus
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorJohn R. Cappelli
Life of this patent
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Abstract
A pulsed radiation dosimetry apparatus utilizing a pin diode to detect pulsed radiation that may be produced by either a particle accelerator or a flash x-ray device. The detected radiation signal is integrated and then directly displayed on a digital meter. The present apparatus provides a direct readout of radiation dose in rads.
Claims7
A pulsed radiation dosimetry apparatus comprising in combination:
- a radiation detector means to receive a pulsed radiation signal, said radiation detecting means providing a voltage signal in response to said pulsed radiation signal,
- an attenuator means receiving said voltage signal from said radiation detector means, said attenuator means providing more than one level of attenuation,
- an integrator means receiving said voltage signal from said attenuator means, said integrator means integrating said voltage signal and providing a ramp signal in response thereto,
- a sample and hold means receiving said ramp signal from said integrator means, said sample and hold means sampling and holding said ramp signal for a predetermined length of time, said sample and hold means providing a dose rate signal,
- a gate driver means receiving a trigger signal, said trigger signal being coincident with the test of said pulsed radiation signal, said gate driver means providing a first and second control signal, said first control signal enabling said sample and hold means to sample and hold said ramp signal, and,
- a display means receiving said dose rate signal from said sample and hold means, said display means receiving said second control signal from said gate driver means, said second control signal enabling said display means to continuously display said dose rate signal.
3 more elements
Dependencies are inferred from the claim text.