ELECTRON ACCELERATOR ILU-10 ALTERNATIVE TO REACTOR «ARGUS» IN PHYSICAL-TECHNICAL
INSTITUTE OF ACADEMY OF SCIENCES OF REPUBLIC OF TAJIKISTAN
S.U.Umarov Physical Technical Institute of Academy of Sciences of the Republic of Tajikistan
D.A.Abdushukurov, I.Bobodzanov, N.T.Buriev, A.A.Juraev, Kh.Kh.Muminov
History
• Reactor installation "ARGUS"• With a complex of technological and laboratory premises.
• Purpose(assignment): realization neutron-activation and neutronography • analyses of various materials.
• Situation for today:
• build-up and installation works were completed in 1987; • Nuclear fuel in republic was not delivered;
• In 1991 all works on start of a reactor were forbidden;
• The available equipment is morally obsolete and has become worthless;
• reactor hall and elevated premises and systems (in-flow and exhaust ventilation, central air of
air with replaceable filters, special sanitation, sanitary exits, reserve electrosupply, system of pneumotransport devices etc.) are in a satisfactory condition.
• As the plan of start of reactor "Argus" was not realized, and the institute desperately needs modern installation for the decision of some research and practical problems alternative to a nuclear reactor can become the safe industrial accelerator of electrons to ILU - 10.
Specification of reactor “ARGUS”
• Isotopic enrichment of Uranium-235 - 21%
• Uranium-235 charge – 1,8 kg
• Amount of aqueous solution UO
2SO
4- 23 lit
• Power, max – 50 kW
• Thermal neutron density n/cm
2s
in the core channel -1 ,2*10
12in the reflector channels – 6*10
11Reactor assignments
• 1. The element analysis
• 2. Manufacture of nuclear filters
• 3. Dephectoscopy
• 4. Manufacture radio-nuclides
• 5. Experiments with physics of the condensed
condition
Construction
• The case of a reactor with a water solution uranil- sulfate is surrounded with a graphite reflector. Reactor installation
represents a parallelepiped 150Х150 sm in the basis and 120 sm in height. For an irradiation of samples in an active zone and in a reflector there are vertical channels in diameter from 40 up to 110 mm. Two tangential channels in diameter of 110 mm form beams of neutrons thermal and epi-thermal energy.
Reactor hole and control
panel.
Laboratory of neutron-activation analysis and neutron-graphic installation
Characteristics of the accelerator of electrons ILU - 10
• Energy of electrons - 5 МэВ;
• Capacity of beam of 50 KW;
• Superficial density of irradiated production -
up to 4 g/sm2;
• Productivity at an irradiation - till 3000 kg /
hour (2.5 Mrad);
• Delivery, installation, start of the accelerator –
Budker INP Siberian Branch of Russian
Neutron beam
•PhTI offers to create a source of neutrons on the basis of the accelerator of electrons to SILT - 10 and graphite-berillium
assembly. The accelerated electrons will move on a refractory target for formation brake gamma radiation. Gamma radiation will beat out neutrons from the berillium block. Neutrons will be slowed down in graphite assembly.
•On precomputations, depending on a material of a target, it is necessary to expect, that a stream of neutrons which can be
received, will make more than 1013(for comparison, the density of a
stream of neutrons in an active zone of reactor “Argus" made –
1013).
•Thus, the received stream of neutrons on the accelerator to ILU - 10 with small updating, will allow to block all complex of tasks which
Fields of application
The accelerator to ILU - 10 can be used in a
mode of division of time, both for realization of
scientific researches, and for industrial use”s
which would be duly and rather useful to a
raising of economy and development of
separate branches of a national economy of
Republic of Tadjikistan.
Neutron-activation analysis
For Tajikistan, 93 which % of territory make
mountains, such branches of a national
economy as geology, a mining industry and an
agriculture, make a basis of economy of our
republic, realization of the big volume of
analytical researches demand. So, mountain -
geological works demand the analysis of
quantity of elements at a level trace
concentration, and the estimation of stocks of
deposits needs realization of enormous volume
of researches of geological samples.
Neutronographic research
•Similar researches of materials which are created, including, and in other laboratories PhTI AS RT, are of great importance for development of many branches of a national economy, in
particular, microelectronics.
•It will allow to receive exact knowledge of structure and crystallographic properties of new and perspective materials, firm bodies, crystals and will promote development of
technology of reception of new materials with preset properties, to the control of cleanliness of initial reagents, use of nuclear
transformations, modification of polymers with the purpose of maintenance of their wear resistance and durability.
Application in agriculture
•Concerning use of analytical researches in an
agriculture, we shall note, that one of the major
conditions of correctness of realization of agrotechnical
actions, the knowledge of element structure process
able soils is.
•The mapping of grounds on microelement
structure also demands the big volume of analytical
researches.
•Competent realization of agrotechnical works will
allow to reduce an ecological load by ground fund and
will serve increase of productivity.
Diagnostic research in medicine
The methods of nuclear-physical researches
used in diagnostics, are highly informative, exact
and have ability to reveal structurally functional
changes of bodies and fabrics practically at a
cellular level. They not traumatic also allow to
receive the unique information on character of
proceeding process, a degree of its prevalence,
presence ills formations. In many cases their
application is justified, and, first of all, in
diagnostics because the received information can
not be received by other methods and always
reflects functions of investigated body or system,
and frequently has no other alternative
Neutron-capture therapy
•Malignant tumours, having the increased metabolism,
concentrate in themselves all microcells, literally exhausting them from all organism. It allows to concentrate in tumours medical
preparations with the maintenance of elements with the increased section of interaction to neutrons (a pine forest, gadolinium etc.). At their sufficient concentration the selective irradiation of
tumours can be made by thermal neutrons. As a result of
absorption of a neutron by a pine forest there is a nuclear reaction to the big allocation of energy in a cell that results in its
destruction. This method considerably increases efficiency of therapy and reduces fatal influence by healthy cells.
•The main feature neutron capture therapies is, that it
influences separate cells. Basically it allows to irradiate and destroy only cancer cells, not damaging thus the next, healthy cells of tissue. Any other versions of beam therapy have no such opportunity.
Variant of installation for neutron-capture therapies. 1-accelerator, 2-berillium assembly, 3 - radiating protection, 4 - the patient, 5 - the
Sterilizations of medical tools, dried fruits,
herbs and money
•Rather actual problem now is creation of a complex for radiating sterilization with the help of a beam of the accelerated electrons which is a high-efficiency, reliable and non-polluting way of sterilization of
products and materials, is convenient in service and has an opportunity of automation of production.
•Sterilization is made directly inside original packing without thermal damage, that also has the positive advantages. Radiating sterilization for today is a unique method allowing to carry out similar works at a level not the European standards.
•Use of such methods of sterilization appreciably will allow to
reduce risk of distribution of infectious diseases that has huge social value for our region.
The centre of sterilization on the basis of the accelerator ILU - 10 with the mechanism of transportation of production
Training of the scientific and pedagogical staf
•The contribution to training of the scientific and pedagogical staff - the essential contribution to development of economy of republic.
•Attraction to research works of students, post-graduate students, young experts and scientific employees.
•It concerns not only to a physical science, but also allied
industries of a national economy, such as geology, an agriculture, medicine, ecology, wildlife management and an environment
Our hopes
•Now employees of the International centre of
nuclear-physical researches of Physical-Technical Institute named after S.U.Umarov AS RT conducts active works on attraction of the international organizations (IAEA, ISTC etc.) and on search of sources of investments for purchase of the accelerator to ILU - 10.
•We hope, that start of the accelerator will open the second breath to nuclear-physical researches in Republic of Tajikistan, will generate new perspective fundamental and applied scientific directions which will promote intensive development of many branches of a national economy.
