Multiple channel programmable coincidence counter

Details Multiple channel programmable coincidence counter Multiple channel programmable coincidence counter

1989-02-27

1990-04-24

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Neutron responsive means

25039002, 377 10, G01T 300, H01J 4712, G06M 1102

Patent

active

049202715

ABSTRACT:
A programmable digital coincidence counter having multiple channels and featuring minimal dead time. Neutron detectors supply electrical pulses to a synchronizing circuit which in turn inputs derandomized pulses to an adding circuit. A random access memory circuit connected as a programmable length shift register receives and shifts the sum of the pulses, and outputs to a serializer. A counter is input by the adding circuit and downcounted by the seralizer, one pulse at a time. The decoded contents of the counter after each decrement is output to scalers.

REFERENCES:
patent: 4002912 (1977-01-01), Stringer
patent: 4580056 (1986-04-01), Kaiser et al.
patent: 4642466 (1987-02-01), Swansen
G. S. Brunson et al., "Neutron Multiplicity Measurements During LINAC Intogation of Safeguards Accountable Material", Los Alamos National Laboratory report LA-11340-MS (Jul. 1988).
C. H. Vincent, "A Method of Reducing Dead-Time Errors in Neutron Multiplicity Measurements with Shift Registers", Ministry of Defence, AWRE, Aldermaston, Berkshire, England (Jan. 1986).
M. S. Krick et al., "Neutron Multiplicity and Multiplication Measurements", Nucl. Instrum. and Methods in Phys. Research 219, 384-393 (1984).
James E. Swansen et al., "Shift-Register Coincidence Electronics System for Thermal Neutron Counters", Nucl. Instrum. and Methods 176, 555-565 (1980).

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