that one ancounters in an accelerator sure
vey.
This photograph was made out at the
largest electron linear accelerator in the
United States, the one at Stamford, with a
noninal value of 1 BEV, but which was actue
ally operated at 670 KEV and here one sees
a shield around the 200 Ionization Chamber
instruments to prevent RF interference fron
the ‘*esolotron# accelerator vith the
@lectronics of our measuring device,
Next slide,
Now, in casee where one can use
portable survey meters, there are such situe
ations as DC accelerators,
Mr, O'Brien will
touch on some aspects of that problem that are
commercially available, a few reasonably good
type of devices,
Inspection is being made here of
the shield at the Cockroft-eWalton generator
of Bertold, of the Bartold Foundation, This
generator is being used to acceleratedeutrons
bombarding a tritium target obtaining 14 MEV
neutrons and a number of our laboratories is
making a survey using a.. Sointillation Detector,
It's a scintillation type detector.
May I have the next slide, please?
.
por
ase
* {NV “tad
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