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2.3.3
a.
2-36
Program 24, Phonex.
Objectives.
To measure the number and energy distribution of the neutra
leaving the surfaces of devices associated with the Maple and
Hickory events.
b.
Technique.
The neutrons were detected by observing proton tracks left
in nuclear track emulsions by protons ejected from a thin poly-
ethliene radiator.
The number of neutrons was determined from the
density of proton tracks in the emulsion coupled with the known
geometry of the experiment.
The energies of the neutrons were
determined from the ranges of the protons in the emulsion. , In
order to protect the emulsions from blast and radiation, the
cameras were placed in heavily shielded collimators.
For the
Maple event, three such collimators were placed on Fox at distances of 500, 700, and 900 yards from the device.
For the Hickory
event two collimators were placed on Tare at distances of 240
and 400 yards.
c.
Results.
The emulsionswere successfully recovered from all stations
and will be processed and scanned at Livermore.
The data will not
be available for a period of several months.
2.3.4
Program A, Weapons Assembly.
The function of Program A was the field assembly of the
large weapon devices,
In the field each assembly team was headed by a Project
Physicist and a Project Engineer thoroughly familiar with the
sneerys design, fabrications, and assembly of their device.
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