Universal Accelerator for Medicine and Industry

#0786

A Multifactoring Charged Particles Accelerator for Medicine and Industry Applications

Tech Area / Field

PHY-PFA/Particles, Fields and Accelerator Physics/Physics

Status
3 Approved without Funding

Registration date
04.11.1996

Leading Institute
MIFI, Russia, Moscow

Supporting institutes

VNIIEF, Russia, N. Novgorod reg., Sarov\nBoreskov Institute of Catalysis, Russia, Novosibirsk reg., Akademgorodok\nKurchatov Research Center, Russia, Moscow

Collaborators

Lawrence Berkeley National Laboratory, USA, CA, Berkeley

Project summary

The purpose of the project is development and creation of physical model and separate units of the powerful universal linear accelerator of original design. It would be used for application of the newest radiating technologies in industrial production, but also in medicine practice (as for boron neutron capture therapy (BNCT) of cancer tumors and radiotherapy). At fulfillment of the project it is supposed to create the universal accelerator, which can accelerate as electron and ion beams, but also create sharply directed bremsstrahlung. The project provides design and research of a powerful epithermal neutron source, elements and units, ensuring deep adjustment of an accelerated beam energy and energy spectrum characteristics. The single gap resonators with independent adjustment of a phase and amplitude of a RF field will be used as accelerating structure.

The accelerator can widely be used at decision of essential problems of industry. Powerful electron beam allows creating and producing technological materials with new properties. The sharply directed bremsstrahlung source would be used for high precision methods of control such as defectoscopy and tomography, but also for salvaging of harmful chemical connections and poisoning substances of a military industry. Ion and electron treatment hardens metal surface. Electron beam and bremsstrahlung would be used for industrial radiating processing of jeweler and optical crystals. For monitoring of explosive and radioactive materials bremsstrahlung, created by interaction of proton beam and carbon target is used. Using an electron accelerator, it is supposed to create the sharply directed bremsstrahlung source. It can be used as in industrial tomography and defectoscopy and as source for radiotherapy practice.

The decision of problem delivered in the project will allow realizing radio and neutron therapy. It is based on the introduction to organism of patient boroncontaining preparations, which are predominary accumulated in sore tissues: Subsequent irradiation of cancer tumors by epithermal neutrons is result in destruction of cells, that filled in boroncontaining preparations. The neutrons can be received in accelerator as with help of ions, and electron (with replacement of target). In each case the neutron flow parameters have certain distinctions. It will be possible practically to define advantages of one or other method and to choose optimum. Moreover accelerator construction permits of using advantages of both methods. It is necessary to note that the accelerator permits to join neutron therapy with traditional methods by bremsstrahlung.

Search and realization of the technical decisions, ensuring increased efficiency, optimum thermostability conditions, and minimization of dimensions and accompanying radiation of the accelerator is supposed. For decision of these problems the newest achievement in accelerator engineering will be used. The preliminary researches showed that optimal arrangement characteristics are following:

Injection voltage, kV 100

Electron energy, MeV 46

Average beam current, mA 10

Accelerating field frequency, MHz 300

Number of accelerating modules 1015

Dimensions of accelerating installation, m³ 3x3x5

Linear accelerator efficiency, % 4050

Taking into account various beam applications, the accelerating structure is proposed to consist of unificated independently feeding modules with single gap resonators. Using this structure, one can provide the advantage of both electron and ion acceleration in the same channel as the wide range of output energy variation. The experimental results of high RF power testing with electron and proton beams show the flexibility, reliability and acceptable efficiency of the structure.

Beam recirculation would allow improving target parameters, decreasing primary beam current, dimensions and cost. Supposed arrangement gives possibility to get power multicomponent fluxes with precise characteristics.

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