ANNUAL REPORT [ON NUCLEAR PHYSICS]. Page: 6 of 51
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NUCLEAR PHYSICS RESEARCH
I. Progress Report
A. Experimental
1. Instrumentation
a. 22-Inch Cyclotron
This cyclotron terminated operation January 31, 1966, and has sub-
sequently been transferred to the University of Chile, Santiago, under the
University of California-University of Chile Exchange Program financed by
the Ford Foundation. It arrived in Santiago July 8, 1966. A report is
currently being written which summarizes the 22-inch cyclotron entitled
"A Final Report on the Davis 22-Inch Cyclotron" which will be UCD-CNL 56.
b. 76-Inch Cyclotron
The Davis 76-inch cyclotron was brought into successful operation on
April 8, 1966 on internal beam at full radius. This is described in
UCD-CNL 47 and was reported at the Gatlinburg Conference on Isochronous
Cyclotrons in May 1966. Since development of the internal beam, we have
been re-working the shorting plane shoes which has proven necessary. The
installation of the shielding has been completed including 5 feet of roof
shielding. Many safety devices have been installed including interlocks,
protective guards and radiation safety devices. The inside of the -building
has been painted and landscaping completed. At the present time, an external
beam is being developed. A one half ha beam of 21 MeV H2+ has been brought
recently through the electrostatic deflector and co-axial channels. The iron
magnetic channel is now being installed which provides 'the last element in
the extraction system and the beam can then be delivered to the beam optics
system. Harmonic coils have proven very effective in centering the internal
beam and in compensating for the disturbance to that beam produced by the
magnetic field external to the co-axial channel. A 12" hole has been provided
in the roof shielding for axial injection thru the upper magnet yoke.
Studies have begun on the central region of the 76-inch cyclotron so
that we may properly design a beam transport system to axially inject ions
for acceleration. An electrolytic tank will be used to investigate the1
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Jungerman, J.A. & True, W.W. ANNUAL REPORT [ON NUCLEAR PHYSICS]., report, January 1, 1966; United States. (https://digital.library.unt.edu/ark:/67531/metadc1034592/m1/6/: accessed April 23, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.