-413.
Magnetic Spectrometer (AEC Project 2961)
J. Motz
This instrument measures absolute intensity of spectral distribution by determining the number of Compton electrons ejected in
the forward direction from a thin beryllium foil.
It is now set
up to measure the spectra from a 1400 kv X-ray tube.
Electron Tube Studies (AEC Project 2910)
H. 0. Wyckoff, Chief
Radiation Physics
Laboratory
Studies of the interaction of electrons with matter.
Current
problems include depth dose in different atomic number materials
and distribution of ionization in gases.
15.
Positive Ion Tube (AEC Project 2910) and
(Neutron Attenuation, AEC Project 2968)
R, S, Caswell
This instrument is presently being converted from a 0.5 ma 200 kv
proton source to a high intensity neutron source. It will be
used first to determine the attenuation of monoenergetic high
energy neutrons in water.
16,
Radiation Attenuation Studies
(AEC Project 2909)
H. O. Wyckoff
Present problems include the attenuation of betatron radiation
and the oblique attenuation of Cobalt-60, Cesium-137 and gold-198
gamma rays.
Betatron Building
18,
50 Mev betatron, 180 Mev synchrotron,
Studies of high energy
X-ray interactions with matter. Personnel protection recommendations in new NCRP handbook for high energy electron accelerators,
a.
X-ray spectrometer measurements of the energies of high
b.
Calorimeter measurements of X-ray beam intensities.
ce.
Concrete attenuation studies.
d.
Energy dose rate measurements in water using anthracene
energy X-ray photons.
(H. W. Koch, Chief, Betatron Section)
(J. McElhinney)
scintillation crystals.
(H. W. Koch)
(H. W. Koch)