Download or read book Development of a Polarized Helium 3 Ion Source for RHIC Using the Electron Beam Ion Source written by Charles Samuel Epstein and published by . This book was released on 2013 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents my work on the design and development of a source of polarized Helium-3 ions for the Relativistic Heavy Ion Collider at Brookhaven National Lab, Upton, NY. The 3He atoms will be polarized using the technique of metastability exchange optical pumping (MEOP), and will then be flowed into the newly commissioned Electron Beam Ion Source (EBIS). Fully stripped 3He++ ions will be extracted and their polarizations measured at low energies before acceleration in the RHIC complex.
Download or read book High intensity Polarized H proton Deuteron and 3He ion Source Development at BNL written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: New techniques for the production of polarized electron, H− (proton), D (D+) and 3H{sup ++} ion beams are discussed. Feasibility studies of these techniques are in progress at BNL. An Optically Pumped Polarized H− Ion Source (OPPIS) delivers beam for polarization studies in RHIC. The polarized deuteron beam will be required for the deuteron Electron Dipole Moment (EDM) experiment, and the 3H{sup ++} ion beam is a part of the experimental program for the future eRHIC (Electron Ion) collider.
Download or read book The RHIC Polarized Source Upgrade written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The RHIC polarized H− ion source is being upgraded to higher intensity (5-10 mA) and polarization for use in the RHIC polarization physics program at enhanced luminosity RHIC operation. The higher beam peak intensity will allow reduction of the transverse beam emittance at injection to AGS to reduce polarization losses in AGS. There is also a planned RHIC luminosity upgrade by using the electron beam lens to compensate the beam-beam interaction at collision points. This upgrade is also essential for future BNL plans for a high-luminosity electron - proton (ion) Collider eRHIC.
Download or read book Development and Applications of Negative Ion Sources written by Vadim Dudnikov and published by Springer Nature. This book was released on 2019-10-18 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the development of sources of negative ions and their application in science and industry. It describes the physical foundations and implementation of the key methods of negative ion production and control, such as charge exchange, thermionic emission, secondary emission (sputtering) and surface-plasma sources, as well as the history of their development. Following on from this essential foundational material, the book goes on to explore transport of negative ion beams, and beam-plasma instabilities. With exposition accessible at the graduate level, and a comprehensive bibliography, this book will appeal to all students and researchers whose work concerns ion sources and their applications to accelerators, beam physics, storage rings, cyclotrons, and plasma traps.
Download or read book Polarized 3He Beams and Targets written by Robert W. Dunford and published by American Institute of Physics. This book was released on 1985 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Opportunities for Polarized He 3 in RHIC and EIC written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The workshop on opportunities for polarized He-3 in RHIC and EIC was targeted at finding practical ways of implementing and using polarized He-3 beams. Polarized He-3 beams will provide the unique opportunity for first measurements, i.e, to a full quark flavor separation measuring single spin asymmetries for p, p− and p° in hadron-hadron collisions. In electron ion collisions the combination of data recorded with polarized electron proton/He-3 beams allows to determine the quark flavor separated helicity and transverse momentum distributions. The workshop had sessions on polarized He-3 sources, the physics of colliding polarized He-3 beams, polarimetry, and beam acceleration in the AGS Booster, AGS, RHIC, and ELIC. The material presented at the workshop will allow making plans for the implementation of polarized He-3 beams in RHIC.
Download or read book Proceedings of the 11th International Workshop on Polarized Sources and Targets written by Tomohiro Uesaka and published by World Scientific. This book was released on 2007 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polarized beams and targets have been irreplaceable tools in nuclear and particle physics experiments for a long time and have provided us rich information on the role played by spin-degrees of freedom in the sub-nuclear world. In addition, techniques to obtain large nuclear polarization have recently been applied to new fields such as materials and medical sciences.The scope of these proceedings covers recent progress of state-of-the-art techniques in spin polarization, the cryogenic method, the atomic beam method, the optical pumping method and the nuclear reaction method.
Download or read book Energy and Water Development Appropriations for 2006 Dept of the Army Corps of Engineers written by United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development and published by . This book was released on 2005 with total page 1928 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy and Water Development Appropriations for 2006 written by United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development and published by . This book was released on 2005 with total page 1934 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book RHIC PLANS TOWARDS HIGHER LUMINOSITY written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Relativistic Heavy Ion Collider (RHIC) is designed to provide luminosity over a wide range of beam energies and species, including heavy ions, polarized protons, and tric beam collisions. In the first seven years of operation there has been a rapid increase in the achieved peak and average luminosity, substantially exceeding design values. Work is presently underway to achieve the Enhanced Design parameters. Planned major upgrades include the Electron Beam Ion Source (EBIS), RHIC-11, and construction of an electron-ion collider (eRHIC). We review the expected RHIC upgrade performance. Electron cooling and its impact on the luminosity both for heavy ions and protons are discussed in detail.
Download or read book RHIC LUMINOSITY UPGRADE PROGRAM written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Relativistic Heavy Ion Collider (RHIC) operates with either ions or polarized protons. After increasing the heavy ion luminosity by two orders of magnitude since its commissioning in 2000, the current luminosity upgrade program aims for an increase by another factor of 4 by means of 3D stochastic cooling and a new 56 MHz SRF system. An Electron Beam Ion Source is being commissioned that will allow the use of uranium beams. Electron cooling is considered for collider operation below the current injection energy. For the polarized proton operation both luminosity and polarization are important. In addition to ongoing improvements in the AGS injector, the construction of a new high-intensity polarized source has started. In RHIC a number of upgrades are under way to increase the intensity and polarization transmission to 250 GeV beam energy. Electron lenses will be installed to partially compensate the head-on beam-beam effect.
Download or read book Reviews Of Accelerator Science And Technology Volume 7 Colliders written by Alexander Wu Chao and published by World Scientific. This book was released on 2015-02-11 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: The idea of colliding two particle beams to fully exploit the energy of accelerated particles was first proposed by Rolf Wideröe, who in 1943 applied for a patent on the collider concept and was awarded the patent in 1953. The first three colliders — AdA in Italy, CBX in the US, and VEP-1 in the then Soviet Union — came to operation about 50 years ago in the mid-1960s. A number of other colliders followed.Over the past decades, colliders defined the energy frontier in particle physics. Different types of colliers — proton-proton, proton-antiproton, electron-positron, electron-proton, electron-ion and ion-ion colliders — have played complementary roles in fully mapping out the constituents and forces in the Standard Model (SM). We are now at a point where all predicted SM constituents of matter and forces have been found, and all the latest ones were found at colliders. Colliders also play a critical role in advancing beam physics, accelerator research and technology development. It is timely that RAST Volume 7 is dedicated to Colliders.
Download or read book An Assessment of U S Based Electron Ion Collider Science written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2018-09-13 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding of protons and neutrons, or "nucleons"â€"the building blocks of atomic nucleiâ€"has advanced dramatically, both theoretically and experimentally, in the past half century. A central goal of modern nuclear physics is to understand the structure of the proton and neutron directly from the dynamics of their quarks and gluons governed by the theory of their interactions, quantum chromodynamics (QCD), and how nuclear interactions between protons and neutrons emerge from these dynamics. With deeper understanding of the quark-gluon structure of matter, scientists are poised to reach a deeper picture of these building blocks, and atomic nuclei themselves, as collective many-body systems with new emergent behavior. The development of a U.S. domestic electron-ion collider (EIC) facility has the potential to answer questions that are central to completing an understanding of atoms and integral to the agenda of nuclear physics today. This study assesses the merits and significance of the science that could be addressed by an EIC, and its importance to nuclear physics in particular and to the physical sciences in general. It evaluates the significance of the science that would be enabled by the construction of an EIC, its benefits to U.S. leadership in nuclear physics, and the benefits to other fields of science of a U.S.-based EIC.
Download or read book The BNL Polarized H Ion Source Development Program written by and published by . This book was released on 1992 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polarized protons have been available for acceleration in the AGS for the high energy physics program since 1984. The polarized H[sup [minus]] source, PONI-1, has routinely supplied a 0.4 Hz, 400 [mu]sec pulse having a nominal intensity of 40 [mu]A. Polarization is [approximately]80% out of the ion source. After PONI- 1 became operational, a program was initiated to develop a more intense source based on a cold ground state atomic beam source, followed by ionization of the polarized H[degrees] beam by D[sup [minus]] charge exchange. Various phases of this work have been fully reported elsewhere, and only a summary is given here.
Download or read book Polarized Ion Source Development at Brookhaven written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The present AGS polarized H− source employs a ground state atomic beam source and Cs° charge exchange ionizer. It produces 30-40 .mu. A of /rvec char/H− at 75-80% polarization, in 500 .mu.s pulses, 0.5 Hz. Up to 60 .mu. A has at times been produced when the cesium beam is performing optimally. Work in progress to produce a higher intensity /rvec char/H− source includes cooling of the H° beam to 6 K and ionzation of the polarized atoms via charge exchange with D−. Experiments to test the possibility of spin selection and focusing of H° using a superconducting solenoid have been completed, and have led us back to the more conventional approach of sextupoles. 6 refs., 3 figs.
Download or read book GAO Report on the Department of Energy National Laboratory Management written by United States. Congress. House. Committee on Science. Subcommittee on Basic Research and published by . This book was released on 2000 with total page 1116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The BNL Polarized H sup minus Ion Source Development Program written by and published by . This book was released on 1992 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polarized protons have been available for acceleration in the AGS for the high energy physics program since 1984. The polarized H[sup [minus]] source, PONI-1, has routinely supplied a 0.4 Hz, 400 [mu]sec pulse having a nominal intensity of 40 [mu]A. Polarization is [approximately]80% out of the ion source. After PONI- 1 became operational, a program was initiated to develop a more intense source based on a cold ground state atomic beam source, followed by ionization of the polarized H[degrees] beam by D[sup [minus]] charge exchange. Various phases of this work have been fully reported elsewhere, and only a summary is given here.
