Download or read book Electron Cyclotron Resonance Ion Sources and ECR Plasmas written by R Geller and published by Routledge. This book was released on 2018-12-13 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: Acknowledged as the "founding father" of and world renowned expert on electron cyclotron resonance sources Richard Geller has produced a unique book devoted to the physics and technicalities of electron cyclotron resonance sources. Electron Cyclotron Resonance Ion Sources and ECR Plasmas provides a primer on electron cyclotron phenomena in ion sour
Download or read book Electron Cyclotron Resonance Ion Sources and ECR Plasmas written by R Geller and published by Routledge. This book was released on 2018-12-13 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: Acknowledged as the "founding father" of and world renowned expert on electron cyclotron resonance sources Richard Geller has produced a unique book devoted to the physics and technicalities of electron cyclotron resonance sources. Electron Cyclotron Resonance Ion Sources and ECR Plasmas provides a primer on electron cyclotron phenomena in ion sour
Download or read book Electron Cyclotron Resonance Ion Sources and ECR Plasmas written by R Geller and published by CRC Press. This book was released on 1996-01-01 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Acknowledged as the "founding father" of and world renowned expert on electron cyclotron resonance sources Richard Geller has produced a unique book devoted to the physics and technicalities of electron cyclotron resonance sources. Electron Cyclotron Resonance Ion Sources and ECR Plasmas provides a primer on electron cyclotron phenomena in ion sources as well as being a reference to the field of ion source developments. Coverage includes elements of plasma physics, specific electron cyclotron resonance physics, and the relevant technology directed at both scientists and engineers.
Download or read book Electron Cyclotron Resonance Ion Sources written by Matthaeus Leitner and published by American Institute of Physics. This book was released on 2005-03-23 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Berkeley, California, 26-30 September 2004
Download or read book Characterization of Electron Cyclotron Resonance Ion Source Instabilities by Charged Particle Diagnostics written by Bryan Isherwood and published by . This book was released on 2020 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ion sources are invaluable tools for producing charge particles for scientific, industrial, and medical applications. In particular, Electron Cyclotron Resonance (ECR) ion sources (ECRIS) are high power sources capable of producing high intensity, high charge state beams of heavy ions. The system uses microwaves to resonantly heat of electrons within an inhomogeneous magnetic trap. However, the internal dynamics of the resulting plasma are complex and poorly understood. In particular, the excitation of kinetic instabilities within the plasma can make operating these ion sources difficult and unpredictable. This thesis focuses on studying these instabilities to determine ways to optimize ECRIS performance by minimizing their impact on the extracted beam current.This study focuses on two measurements that look at the steady-state and time-resolved measurements of charged particle currents escaping the ion source during stable and unstable operations. The first measurement is a novel diagnostic of electrons escaping confinement from the plasma chamber. The second was a measurement of high charge state ions (Ar8+) extracted from the plasma chamber over a broad set of parameter spaces. These measurements provide insight into the ideal operating conditions for an ECR ion source and the dynamics of the ion and electron populations within its plasma.
Download or read book ECR Electron Cyclotron Resonance Ion Sources for Cyclotrons written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last decade ECR (Electron Cyclotron Resonance) ion sources have evolved from a single large, power consuming, complex prototype into a variety of compact, simple, reliable, efficient, high performance sources of high charge state ions for accelerators and atomic physics. The coupling of ECR sources to cyclotrons has resulted in significant performance gains in energy, intensity, reliability, and variety of ion species. Seven ECR sources are in regular operation with cyclotrons and numerous other projects are under development or in the planning stag. At least four laboratories have ECR sources dedicated for atomic physics research and other atomic physics programs share ECR sources with cyclotrons. An ECR source is now installed on the injector for the CERN SPS synchrotron to accelerate O/sup 8 +/ to relativistic energies. A project is underway at Argonne to couple an ECR source to a superconducting heavy-ion linac. Although tremendous progress has been made, the field of ECR sources is still a relatively young technology and there is still the potential for further advances both in source development and understanding of the plasma physics. The development of ECR sources is reviewed. The important physics mechanisms which come into play in the operation of ECR Sources are discussed, along with various models for charge state distributions (CSD). The design and performance of several ECR sources are compared. The 88-Inch Cyclotron and the LBL ECR is used as an example of cyclotron+ECR operation. The future of ECR sources is considered.
Download or read book Perturbative Measurements of Electron Cyclotron Resonance Ion Source Plasmas written by Derek Elwin Neben and published by . This book was released on 2019 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heavy ion accelerators are a valuable resource for the nuclear science community to study atomic physics. One such heavy ion accelerator is the Coupled Cyclotron Facility (CCF) at the National Superconducting Cyclotron Laboratory (NSCL) which relies on Electron Cyclotron Resonance (ECR) ion sources to provide the primary beam to the target. ECR ion sources are essential for the efficient operation of research accelerators such as the CCF, providing high currents of highly charged ions. Highly charged ion beams increase the efficiency of the accelerators, but require longer confinement times and higher temperature plasmas in the ion sources than is necessary to produce singly charged beams. The need to use high temperature and low density plasmas creates challenges including those relating to plasma stability. ECR ion sources provide a good platform to accept metallic vapor ovens and sputtering probes allowing the CCF to accelerate up to 30 types of beams ranging from oxygen to uranium. Furthermore, ECR ion sources use no filaments or cathodes providing a high degree of reliability for the accelerator facility. As the intensity frontier demands ever rarer isotopes from accelerator facilities, the heavy ion beam intensity must increase [70], which creates new demands from the ion sources.The work presented within this dissertation set out to better understand the mechanism that confines highly charged ions in the ECR plasma. Specifically, it was explored if hot electrons (energy larger than 50 keV) contribute to ion confinement by generating an electrostatic well in the plasma potential [68]. Perturbative measurements of ECR ion sources are presented with the aim to explore ion confinement times: pulsed sputtering (Chapter 4) and amplitude modulation (Chapter 5). Chapter 3 explores the geometry of the sputtering probe with respect to the magnetic field which was crucial to produce reliable pulsed sputtering results on the ECR ion source. Axial pulsed sputtering, which could be conveniently implemented on fully superconducting sources, incorporated a bias disc effect that highly perturbed the plasma. Radial sputtering was emulated by placing a semi-shielded probe along the plasma chamber wall in between the electron loss surfaces.Ion confinement time was characterized through the decay time of the beam current, which is proportional to ion confinement time. Ion beam decay times were measured for different charge states of gold in an oxygen plasma in Chapter 4. Decay time always increased with increasing charge state. Decay time also increased with hot electron temperature for lower frequency operation (13 GHz), but reached an optimized value for higher frequency operation (18 GHz) due to plasma instabilities. Electrostatic confinement of ions appeared to be the most plausible mechanism to explain the observed decay time behaviors. A novel perturbative measurement technique was developed for ECR ion sources using Amplitude Modulation (AM) of microwave power. The AM measurement was originally motivated by whether or not 50~kHz modulation in microwave power (from the microwave source) would be observable in the beam current. A systematic study was organized on the University of Jyvaskyla Physics Department (JYFL) normal conducting ECR ion source in Jyvaskyla Finland. Chapter 5 presents the beam current response to AM on the 14 GHz ECR ion source for different weights of noble gases, magnetic fields, and vacuum pressures. The beam current amplitude generally decayed exponentially for frequencies higher than around 400 Hz with the modulation highly suppressed at 10 kHz.
Download or read book SWISSCASE written by Michael Bodendorfer and published by Sudwestdeutscher Verlag Fur Hochschulschriften AG. This book was released on 2009 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ions are atoms that have lost or gained one or more electrons, providing the ions with a negative or a positive charge. Unlike bound ions found in solutions, free ions are very rare on Earth but are abundantly found in interplanetary space and cometary atmospheres. Ground based ion sources, which produce free ions to simulate these science targets, are used to calibrate space flight instruments on Earth prior to flight. In order to provide a brighter and more versatile ion source to calibrate future space instrumentation at the University of Bern, Switzerland, this thesis presents planing, realization and characterization of a new high performance ion source. SWISSCASE, the Solar Wind Ion Source Simulator for the CAlibration of Space Experiments, is optimized for production of highly charged ions such as 2 A of Ar8+ and 80 pA of Ar12+. The ions are produced by an electron cyclotron resonance plasma which is heated by microwaves with a frequency of 10 GHz. The plasma is confined by a very compact full permanent magnet hexapole which makes the ion source highly attractive for the operation on a high voltage terminal due to its intrinsically low power consumption.
Download or read book Electron Cyclotron Resonance ECR Ion Sources written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Starting with the pioneering work of R. Geller and his group in Grenoble (France), at least 14 ECR sources have been built and tested during the last five years. Most of those sources have been extremely successful, providing intense, stable and reliable beams of highly charged ions for cyclotron injection or atomic physics research. However, some of the operational features of those sources disagreed with commonly accepted theories on ECR source operation. To explain the observed behavior of actual sources, it was found necessary to refine some of the crude ideas we had about ECR sources. Some of those new propositions are explained, and used to make some extrapolations on the possible future developments in ECR sources.
Download or read book Physics of Multiply Charged Ions and Physics of Electron Cyclotron Resonance Ion Sources written by S. L. Bilman and published by . This book was released on 1988 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A New Miniature Electron Cyclotron Resonance Ion Source written by Caesar Romero Jackson and published by . This book was released on 1992 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ion Beam Extraction from Electron Cyclotron Resonance Ion Sources and the Subsequent Low Energy Beam Transport written by Daniel Winklehner and published by . This book was released on 2013 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Physics and Technology of Ion Sources written by Ian G. Brown and published by John Wiley & Sons. This book was released on 2006-03-06 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first edition of this title has become a well-known reference book on ion sources. The field is evolving constantly and rapidly, calling for a new, up-to-date version of the book. In the second edition of this significant title, editor Ian Brown, himself an authority in the field, compiles yet again articles written by renowned experts covering various aspects of ion source physics and technology. The book contains full chapters on the plasma physics of ion sources, ion beam formation, beam transport, computer modeling, and treats many different specific kinds of ion sources in sufficient detail to serve as a valuable reference text.
Download or read book ECR electron Cyclotron Resonance Ion Sources and Applications with Heavy ion Linacs written by and published by . This book was released on 1990 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The electron cyclotron resonance (ECR) ion source has been developed in the last few years into a reliable source of high charge-state heavy ions. The availability of heavy ions with relatively large charge-to-mass ratios (0.1--0.5) has made it possible to contemplate essentially new classes of heavy-ion linear accelerators. In this talk, I shall review the state-of-the-art in ECR source performance and describe some of the implications this performance level has for heavy-ion linear accelerator design. The present linear accelerator projects using ECR ion sources will be noted and the performance requirements of the ECR source for these projects will be reviewed. 30 refs., 3 figs.
Download or read book An Ultra Compact 10 GHz Electron cyclotron resonance Ion Source ECRIS for the Production of Multiply Charged Ions written by and published by . This book was released on 1996 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a growing interest in the use of beams of multiply charged ions produced in special environments like high voltage platforms, Dynamitrons, Van-de-Graaff accelerators or on-line production systems for radioactive beam facilities. A compact 10 GHz ECR ion source (200 mm long, 170 mm diameter) has been developed and tested. The complete magnetic structure made from permanent magnet material is comprised of four ring magnets producing an asymmetric axial magnetic field with a mirror ratio of 2.5 and a 24 piece hexapole magnet with a maximum radial field of 0.94 T inside the plasma chamber of 25 mm inner diameter. The coupling of the microwave to the plasma using a resonant transition line from rectangular to circular waveguide shows efficient ECR plasma heating at microwave power levels around 10 watts. Charge state distributions for various elements with intensities up to 320 e[mu]A and their dependence on operation parameters will be presented as well as VUV spectra in the wavelength region down to 15 nm.
Download or read book Properties of Electron Cyclotron Resonance Plasma Sources written by Aseem Kumar Srivastava and published by . This book was released on 1995 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 20th International Workshop on Electron Cyclotron Resonance Ion Sources written by and published by . This book was released on 2014 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt:
