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Расчетно-экспериментальный метод создания мишени тормозного излучения для УЭЛ 5-20

выпускная квалификационная работа бакалавра

Расчетно-экспериментальный метод создания мишени тормозного излучения для УЭЛ 5-20

Abstract

В работе представлено описание метода создания мишени-конвертера тормозного излучения при прохождении через нее пучка электронов на примере мишени из вольфрама толщиной 2 мм. Целью работы является использование расчетного и экспериментального методов для создания мишени-конвертера тормозного излучения с применением программных пакетов и экспериментальной проверкой расчетных результатов. Для выбора материала и толщины мишени, необходимо знать характеристики тормозного излучения и электронного пучка, падающего на мишень. В данной работе рассматриваются программы MCC 3D и GEANT 4, использующие метод Монте-Карло для расчёта взаимодействия излучения с веществом. Были получены выражения для оценки выходов тормозных гамма-квантов и первичных электронов из мишени, построены угловые распределения тормозного и электронного излучения и зависимости средней энергии гамма-квантов и электронов от угла вылета. Проведены измерения и расчет методом Монте-Карло профиля тормозного излучения. Результаты проведенной работы могут быть применены в медицине, метрологии ионизирующих излучений и в работах, когда требуется провести оценку выхода тормозного или электронного излучений. Настоящая работа может быть продолжена для более точных расчетов в более широком диапазоне энергий и материалов.

The given work is devoted to the description of a method for creating a target converter of bremsstrahlung when an electron beam passes through it on the example of a target made of tungsten with a thickness of 2 mm. The purpose of the work is to use computational and experimental methods to create a target converter of bremsstrahlung using software packages and experimental verification of the calculated results. To select the material and thickness of the target, it is necessary to know the characteristics of the bremsstrahlung and the electron beam incident on the target. In this work, the MCC 3D and GEANT4 programs using the Monte Carlo method for calculating the interaction of radiation with matter are considered. Expressions were obtained to estimate the yields of bremsstrahlung gamma quanta and primary electrons from the target, angular distributions of bremsstrahlung and electron radiation and the dependence of the average energy of gamma quanta and electrons on the departure angle were constructed. Measurements and calculation of the bremsstrahlung profile by the Monte Carlo method were carried out. The results of the work carried out can be applied in medicine, metrology of ionizing radiation and in works when it is necessary to evaluate the yield of bremsstrahlung or electronic radiation. The present work can be continued for more accurate calculations in a wider range of energies and materials.

Keywords

электроны, мишень, профиль поля, electrons, bremsstrahlung, тормозное излучение, target, field profile, GEANT 4, Монте-Карло, angular distribution, Monte-Carlo, угловое распределение

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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