LASL INTENSE 14-MeV NEUTRON SOURCE. Page: 11 of 12
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exists, but rather that hypersonic wind tunnels and
high power hydrogen flow systems exist. The special
techniques available from these fields appear to be
adequate to the job.
Tritium recovery and tritium recovery from ac-
celerators is a LASL specialty,1s one which is essen-
tial to the project. If we assume 50% gas efficien-
cy and that the triton beam trap, the ion source
pumping trap, and the ion source gas supply are all
replaced three times a day, then each trap will con-
tain 8.6 x 103 curies and the supply bottle 1.7 x
10' curies. These traps will be emptied and the
bottles refilled at a special LASL tritium facility.
The current of tritium from the traps and to the
bottles will each total 1.9 x 10 curies per year
(or 1.4 x 10 dollar's worth per year), which illus-
trates the importance of the special techniques and
V. FEASIBILITY STUDY
As a logical step toward construction of such
an intense 14 MeV neutron source, further detailed
feasibility study is suggested. This study should
be directed toward exploration of questions in the
following general areas:
1. Is a 14 MeV source at 1014 to 1C15
neutrons/cm2 sec in operation really practical?
Although we believe it is, a closer lock at the
physical and engineering requirements is needed to
2. What is the best design from among the
several variations possible? After a deeper look
at the matter, we would not necessarily stay with
the LASL suggestion,3 the MIT suggestion,2 or any
existing concept. We would develop the best idea
as judged by the several competing criteria.
3. How should the source be built? What will
the costs and scheduling be like? What existing
(surplus) equipment is available? A thorough engi-
neering study should be undertaken to assess these
This feasibility study would need to cover all
components of the complete system, sketched out in
the last section. In so doing, it would draw upon
the many LASL specialties already cited and many
which were not mentioned. It would require exten-
sive use of the LASL computing facility, the large
hydrodynamics codes written for it, and the people
who know how to use them. The study would also
seek cooperation from the existing high intensity
beam groups at ORNL, LBL, and LLL and would draw on
LASL's 'own ion source experience, especially in pro-
ducing triton beams.
1. S. C. Burnett and I. R. Ellis, "Radiation and
Wall Flux Calculations for a Theta-Pinch Scien-
tific Feasibility Experiment and a Prototype
Reactor," Los Alamos Scientific Laboratory re-
port LA-4814-MS (1971).
2. D. Colombant and L. M. Lidsky, "High Intensity
14-MeV Neutron Source," MIT Research Laboratory
for Electronics QPR No. 91, p. 133 (1968).
D. Colombant, "High Intensity 14-MeV Neutron
Source," Thesis, MIT, 1969.
3. H. Dreicer and D. B. Henderson, "Facility for
Duplicating 14-MeV Neutron Effects in Fusion
Power Reactors," Los Alamos Scientific Labora-
tory report LA-4709-MS (1971).
4. A. C. Graves et al., "Neutron Sources," in
Miscellaneous Physical and Chemical Techniques
of the Los Alamos Project: Experimental Tech-
niques (McGraw-Hill, New York, 1952), Chap. 2.
5. J. Fi. Coon, "Targets for the Production of
Neutrons," in Fast Neutron Physics, Marion and
Fowler, Eds. (Interscience, New York, 1960),
Chap. IV.D, p. 691.
6. J. E. Trolley, "Supersonic Jet Target in
Vacuo," Bull. Am. Phys. Soc., Ser. II, 16,
7. W. Whaling, "The Energy Loss of Charged Parti-
cles in Matter," in Handbuch der Physik,
(Springer, Berlin, Germany, 1958), Bd. XXXIV,
8. Data are from Nelson Jarmie et al., "Charged
Particle Cross Sections," Los Alamos Scientific
Laboratory report LA-2014 (1957).
Analytic fit from W. C. Wolkenhauer, Ed., "The
Pacific Northwest Laboratory Annual Controlled
Thermonuclear Reactor Technology Report - 1971,"
Battelle Pacific Northwest Laboratories report
BNWL-1604 (June 1971).
9. Federal Register, Vol. 33, No. 190, Sept. 28,
10. See any standard text book, for instance:
A. M. Kuethe and J. D. Schetzer, Foundations
of Aerodynamics, 2nd Edition (Wiley, New York,
1950), p. 161.
11. A. Pope, Wind-Tunnel Testing, 2nd Edition
(Wiley, New York, 1954), Chap. 12.
12. K. Goin, Sandia Corporation, Albuquerque, New
Mexico, personal communication.
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Henderson, D.B. LASL INTENSE 14-MeV NEUTRON SOURCE., report, January 1, 1972; New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc1026021/m1/11/: accessed April 25, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.