RU2011124218A

RU2011124218A - CYCLE ACCELERATOR OF CHARGED PARTICLES

Info

Publication number: RU2011124218A
Application number: RU2011124218/07A
Authority: RU
Inventors: Геннадий Варламович Долбилов
Original assignee: Объединенный Институт Ядерных Исследований
Priority date: 2011-06-15
Filing date: 2011-06-15
Publication date: 2012-12-20
Also published as: RU2477936C2

Abstract

1. Циклический ускоритель заряженных частиц, включающий отклоняющие дипольные магниты для формирования замкнутых орбит частиц, ускоряющую и фокусирующую систему в виде квадрупольных линз расположенных на прямолинейных участках орбит частиц, системы ввода и вывода пучка частиц, отличающийся тем, что каждый дипольный магнит состоит из набора секций с азимутальной протяженностью (ΔΘ), сами секции выполнены из двух малых диполей с однородным и постоянным во времени магнитным полем, при этом, координаты внутренней границы диполей удовлетворяют условию:x=±[(P/qB-r)·ctg(ΔΘ/4)+х,]где: x - расстояние внутренней границы малых диполей до биссектрисы угла ΔΘ,x- постоянная величина, определяемая конкретной конструкцией малых диполей,r - радиальная координата границы малых диполей,Р- заданный максимальный импульс частиц,q - заряд выбранных частиц;малые диполи снабжены устройствами коррекции их положения для компенсации краевых эффектов полей, дополнительно введена фокусирующая система отклоняющих дипольных магнитов состоящая из чередующихся секций дипольных магнитов служащих для фокусировки пучка в радиальном направлении и для дефокусировки пучка в вертикальном направлении и квадрупольных линз служащих для фокусировки пучка в вертикальном направлении и для дефокусировки пучка в радиальном направлении, а ускоряющая система состоит из импульсных индукционных секций связанных с датчиками времени пролета частиц и служащих для запуска этих секций.2. Утройство по п.1, отличающееся тем, что малые диполи выполнены в виде постоянных магнитов.1. A cyclic accelerator of charged particles, including deflecting dipole magnets to form closed particle orbits, an accelerating and focusing system in the form of quadrupole lenses located on straight sections of the particle orbits, a particle beam input and output system, characterized in that each dipole magnet consists of a set of sections with an azimuthal extent (ΔΘ), the sections themselves are made of two small dipoles with a uniform and constant in time magnetic field, while the coordinates of the inner boundary of the dipoles are satisfactory they give the condition: x = ± [(P / qB-r) · ctg (ΔΘ / 4) + x,] where: x is the distance of the internal boundary of small dipoles to the bisector of the angle ΔΘ, x is a constant value determined by the specific design of small dipoles, r is the radial coordinate of the boundary of small dipoles, P is the specified maximum momentum of the particles, q is the charge of the selected particles; small dipoles are equipped with position correction devices to compensate for the edge effects of the fields, an additional focusing system of deflecting dipole magnets is introduced, consisting of alternating sections of dipole magnets serving for focusing the beam in the radial direction and for defocusing the beam in the vertical direction and quadrupole lenses used to focus the beam in the vertical direction and for defocusing the beam in the radial direction, and the accelerating system consists of pulsed induction sections connected with time-of-flight particles and serving to start these sections .2. The device according to claim 1, characterized in that the small dipoles are made in the form of permanent magnets.

Claims

1. A cyclic accelerator of charged particles, including deflecting dipole magnets to form closed particle orbits, an accelerating and focusing system in the form of quadrupole lenses located on straight sections of the particle orbits, a particle beam input and output system, characterized in that each dipole magnet consists of a set of sections with an azimuthal extent (ΔΘ), the sections themselves are made of two small dipoles with a uniform and constant in time magnetic field, while the coordinates of the inner boundary of the dipoles are satisfactory yayut condition:

x = ± [(P _max / qB-r) · ctg (ΔΘ / 4) + x ₀ ,]

where: x is the distance of the internal boundary of small dipoles to the bisector of the angle ΔΘ,

x ₀ is a constant value determined by the specific design of small dipoles,

r is the radial coordinate of the boundary of small dipoles,

P _max - the specified maximum momentum of the particles,

q is the charge of the selected particles;

small dipoles are equipped with devices for correcting their position to compensate for the edge effects of the fields, an additional focusing system of deflecting dipole magnets is introduced, consisting of alternating sections of dipole magnets used to focus the beam in the radial direction and to defocus the beam in the vertical direction and quadrupole lenses used to focus the beam in the vertical direction and for defocusing the beam in the radial direction, and the accelerating system consists of pulsed induction sections connected with sensors for the time of flight of particles and serving to start these sections.

2. The device according to claim 1, characterized in that the small dipoles are made in the form of permanent magnets.