Space-charge limits for linear accelerators

by A. W Maschke

Publisher: Dept. of Energy, [Office of Energy Research], Brookhaven National Laboratory, Accelerator Dept., Publisher: for sale by the National Technical Information Service in Upton, N.Y, Springfield, Va

Written in English
Published: Downloads: 858
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Subjects:

  • Linear accelerators,
  • Space charge

Edition Notes

StatementA. W. Maschke
SeriesBNL ; 51022
ContributionsBrookhaven National Laboratory. Accelerator Dept, United States. Dept. of Energy. Office of Energy Research
The Physical Object
Paginationiii, 9 p. ;
ID Numbers
Open LibraryOL14877359M

A linear accelerator particle is a type of particle which accelerator greatly increases the velocity of charged subatomic particles or ions by subjecting the charged particles to a series of oscillating electric potentials along a linear beam line; this method of particle . In a linear particle accelerator (linac), particles are accelerated in a straight line with a target of interest at one end. They are often used to provide an initial low-energy kick to particles before they are injected into circular accelerators. The longest linac in the world is the Stanford Linear Accelerator, SLAC, which is 3 km ( mi) long. Linear accelerator, type of particle accelerator (q.v.) that imparts a series of relatively small increases in energy to subatomic particles as they pass through a sequence of alternating electric fields set up in a linear structure. The small accelerations add together to give the particles a. @article{osti_, title = {Proton linear accelerators: A theoretical and historical introduction}, author = {Lapostolle, P M}, abstractNote = {From the beginning, the development of linear accelerators has followed a number of different directions. This report surveys the basic ideas and general principles of such machines, pointing out the problems that have led to the various.

Background: This study seeks to increase clinical operational efficiency and accelerator beam consistency by retrospectively investigating the application of statistical process control (SPC) to linear accelerator beam steering parameters to determine the utility of such a methodology in detecting changes prior to equipment failure (interlocks actuated). Ingo Hofmann is the author of Apokalypse im Umbruch der Zeit ( avg rating, 0 ratings, 0 reviews), Space Charge Physics for Particle Accelerators ( A particle accelerator is a device that uses electric fields to propel electrically charged particles to high ay examples of particle accelerators are those found in television sets and X-ray generators. The largest and most powerful particle accelerators, such as the LHC and Tevatron, are used for experimental particle physics.. There are two basic types of particle accelerator. Proton and Ion Linear Accelerators by Yuri Batygin and Sergei Kurennoy offered at the U.S. Particle Accelerator School sponsored by the University of New Mexico and held from June 17 - 28,

The book is a compilation of the most important experimental results achieved during the past 60 years at CERN - from the mids to the latest discovery of the Higgs particle. Covering the results from the early accelerators at CERN to those most recent at the LHC, the contents provide an excellent review of the achievements of this. Plasma acceleration is a technique for accelerating charged particles, such as electrons, positrons, and ions, using the electric field associated with electron plasma wave or other high-gradient plasma structures (like shock and sheath fields). The plasma acceleration structures are created either using ultra-short laser pulses or energetic particle beams that are matched to the plasma. linear accelerator The traditional L-shaped gantry for radiotherapy linear accelerators will soon become obsolete CHAPTER 2:Highly Conformal Radiotherapy: IMRT, Tomotherapy, Stereotactic. Radiosurgery, Proton Therapy A klystron is a specialized linear-beam vacuum tube, invented in by American electrical engineers Russell and Sigurd Varian, which is used as an amplifier for high radio frequencies, from UHF up into the microwave range. Low-power klystrons are used as oscillators in terrestrial microwave relay communications links, while high-power klystrons are used as output tubes in UHF television.

Space-charge limits for linear accelerators by A. W Maschke Download PDF EPUB FB2

Get this from a library. Space-charge limits for linear accelerators. [A W Maschke; Brookhaven National Laboratory.

Accelerator Department.; United States. Department of. Title: Space-charge limits in linear accelerators. Abstract.

This report presents equations that allow an approximate evaluation of the limiting beam current for a large class of radio-frequency linear accelerators, which use quadrupole strong focusing.

Included are the Alvarez, the Wideroe, and the radio-frequency quadrupole linacs. Space-charge limits in linear accelerators Wangler, T. Abstract. This report presents equations that allow an approximate evaluation of the limiting beam current for a large class of radio-frequency linear accelerators, which use quadrupole strong focusing.

Included are the Alvarez, the Wideroe, and the radio-frequency quadrupole by: Understanding and controlling the physics of space charge effects in linear and circular proton and ion accelerators are essential to their operation, and to future high-intensity facilities.

This book presents the status quo of this field from a theoretical perspective, compares analytical approaches with multi-particle computer simulations. Beam Dynamics Including Linear Space‐Charge Field. Beam‐Current Limits from Space Charge. Overview of Emittance Growth from Space Charge.

Emittance Growth for rms Matched Beams. Model of Space‐Charge‐Induced Emittance Growth in a Linac. Emittance Growth for rms Mismatched Beams. Space‐Charge Instabilities in RF Linacs from Periodic.

FORMULAE AND PROCEDURES USEFUL FOR THE DESIGN OF LINEAR ACCELERATORS Space charge: Linear effects books, Linear Accelerator Conference Proceedings and Proceedings of the CERN Accelerator School are referred to, because they are relatively easy to find in libraries.

Internal reports, more difficult toFile Size: KB. RF Linear Accelerators is a textbook that is based on a US Particle Accelerator School graduate-level course that fills the need for a single introductory source on linear accelerators.

The text provides the scientific principles and up-to-date. Linear accelerators thus play, and will keep playing, a significant role in cancer management in general and are responsible for the therapeutic success obtained in many tumour treatment.

To illustrate the situation, Table 1 gives the number of linear accelerators at present used in France for radiotherapy applications (their type and energy).Cited by: 3. • No basic limit to maximum kinetic energy. • Method can be applied to linear accelerators (linac) or to circular accelerators (cyclotron or synchrotron).

Radioactive Isotopes Example: Cs • single dominant energy, MeV • Activity: Ci and Ci, dual source • Dose rate range: - 10 Gy/minFile Size: 1MB. Click here to order this book in one of two formats: softcover ISBN: $ eBook ISBN: $ To order by phone, call A Primer on Theory and Operation of Linear Accelerators in Radiation Therapy C.

Karzmark and Robert J. Morton James Lamb, Editor THIRD EDITION MEDICAL PHYSICS PUBLISHINGFile Size: 1MB. Introduction 1 1 Introduction This book is an introduction to the theory of charged particle acceleration. It has two primary roles: 1.A unified, programmed summary of the principles underlying all charged particle accelerators.

2.A reference collection of equations and material essential to accelerator development and beam applications. RF Linear Accelerators is a textbook that is based on a US Particle Accelerator School graduate-level course that fills the need for a single introductory source on linear accelerators.

The text provides the scientific principles and up-to-date technological aspects for both electron and ion linacs. damental intensity limitation in high-intensity linear and circular accelerators.

As the mission of the US high energy physics program is pushing the Intensity Frontier, it is very timely to explore novel schemes of space-charge compen-sation that could signicantly improve the performance of leading high-intensity proton accelerator facilities. MCH 5 GeV 16 km 9 mm TESLA 5 GeV 17 km 6 mm Effects of space-charge forces in the ILC damping rings.

The linear approximation to the Bassetti-Erskine formula can significantly over-estimate the size of the space-charge forces at large Size: KB. This book is a comprehensive introduction to the physics and technology of charged- particle accelerators.

Topics include electrostatic accelerators, betatrons, linear induction accelerators, RF linacs, cyclotrons and synchrotrons. ( views). In the limit, i.e. the space charge or laminar limit, the equilibrium distribution is a K–V distribution, which, as we have seen, is uniform in both spatial and velocity coordinates.

This limit can also be considered as the 'zero emittance' limit. The Meqalac concept [13] grew out of an analysis A1 made of the space charge limits for linear accelerators [14].

This analysis showed that the 6D phase space density of a linac is propor- tional to (f~/fl3)(A/Z), where f is the linac fre- quency and /% is the ion : Ronald L.

Martin. Nuclear Instruments and Methods in Physics Research A () North-Holland NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH Section A Space charge equilibrium and beam current limitations in ion linear accelerators S.A.

Minaev Moscow Engineering Physics Institute, Kashirskoe sh. 31, MoscowRussian Federation (Received 12 May ; revised form Author: S.A.

Minaev. Abstract. Linear ion accelerators have been proposed for both high peak and high average current applications. 1 The design of high-intensity linacs is strongly influenced by the requirement of providing sufficient focusing (confinement) for the beam to balance the effects of the space-charge (self-field) forces, which become important for high beam by: 1.

questions of space charge limitations and charge ex- change. Beam lifetime and power output efficiency may ultimately lead to a linear accelerator as the choice for an ignition device. For proof of principle, how- ever, at power levels way beyond present inertial fu.

A linear particle accelerator (often shortened to linac) is a type of particle accelerator that accelerates charged subatomic particles or ions to a high speed by subjecting them to a series of oscillating electric potentials along a linear beamline.

Space-charge limit for a drift-tube linac from the stability point of view of longitudinal periodicity. [Shigemi Inagaki; Los Alamos Scientific Laboratory.; United States. Senichev, Space charge problem in low energy SC linear accelerator, EPACpp. – Energy monochromatization system for injection H and D beams in synchrotron Jan In the first part of this chapter we deal with electron linear accelerators (linac) and we touch upon other types of devices in section An idea of how these accelerators work is given by figure A particle beam is injected inside a chain of coupled cavities, powered by an amplified and suitably split RF signal.

This book is devoted to the quickly developing area of high intensity particle beam physics. Beam emittance growth, halo formation and chaotic particle motion are the main areas of research in the new intense particle accelerators.

Knowledge of those phenomena is crucial for the design of particle accelerators with space-charge dominated beams. Longitudinal Dynamics of Ions in a Linear Induction Accelerator Phase Dynamics of Relativistic Particles Radio-Frequency Linear Accelerators Electron Linear Accelerators Linear Ion Accelerator Configurations Coupled Cavity Linear Accelerators Space-Charge Tune Shift and Current Limits in Circular Accelerators Betatron Tune Shift due to Self Fields Current Limits in Weak- and Strong-Focusing Systems Effects of Image Forces on Coherent and Incoherent Betatron Tune Charge Neutralization Effects The beam dynamics and current limits in a linear accelerator are determined largely by the periodicity and phase‐space acceptance of the external focusing system and the particle oscillation frequencies (or phase shifts per focusing period), both without the space‐charge forces and with the space‐charge forces of the particle by: An electrostatic nuclear accelerator is one of the two main types of particle accelerators, where charged particles can be accelerated by subjection to a static high voltage static high voltage method is contrasted with the dynamic fields used in oscillating field particle to their simpler design, historically these accelerators were developed earlier.

The self-consistent treatment of a space-charge-dominated beam is generalized for the case of a relativistic bunch. Analytical derivations are performed in the limit of a high brightness beam.4. L.C. Teng, "Transverse Space-Charge Effects", Argonne National Laboratory Report ANLAD-S9 (Argonne, Illinois; February 1, ).

The papers presented on August 26 by Drs. Lloyd Smith and p. Lapostolle at the International Accelerator Conference at Dubna are of interest for obtaining self-consistent solutions to the transverse space-charge.Linear Accelerator Shielding: Thirty Years Beyond NCRP 49 The total dose at the door is given by the sum of the four contributions: S c = f*S s + L I + L d + S p where f is the fraction of the primary beam transmitted through the patient.

For the typical case, the total dose is given by McGinley () as: S t = *S c High Energy Neutrons.