Simulation of electron beam dyanmics in the 22 MeV accelerator for a coherent electron cooling proof of principle experiment - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Simulation of electron beam dyanmics in the 22 MeV accelerator for a coherent electron cooling proof of principle experiment write by Justin Owen. This book was released on 2013. Simulation of electron beam dyanmics in the 22 MeV accelerator for a coherent electron cooling proof of principle experiment available in PDF, EPUB and Kindle.
Coherent Electron Cooling Proof of Principle Instrumentation Design
Coherent Electron Cooling Proof of Principle Instrumentation Design - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Coherent Electron Cooling Proof of Principle Instrumentation Design write by . This book was released on 2012. Coherent Electron Cooling Proof of Principle Instrumentation Design available in PDF, EPUB and Kindle. The goal of the Coherent Electron Cooling Proof-of-Principle (CeC PoP) experiment being designed at RHIC is to demonstrate longitudinal (energy spread) cooling before the expected CD-2 for eRHIC. The scope of the experiment is to longitudinally cool a single bunch of 40 GeV/u gold ions in RHIC. This paper will describe the instrumentation systems proposed to meet the diagnostics challenges. These include measurements of beam intensity, emittance, energy spread, bunch length, position, orbit stability, and transverse and temporal alignment of electron and ion beams.
Influence of Electron Beam Parameters on Coherent Electron Cooling
Influence of Electron Beam Parameters on Coherent Electron Cooling - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Influence of Electron Beam Parameters on Coherent Electron Cooling write by . This book was released on 2012. Influence of Electron Beam Parameters on Coherent Electron Cooling available in PDF, EPUB and Kindle. Coherent electron cooling (CeC) promises to revolutionize the cooling of high energy hadron beams. The intricate dynamics of the CeC depends both on the local density and energy distribution of the beam. The variations of the local density (beam current) are inevitable in any realistic beam. Hence, in this paper we propose a novel method of beam conditioning. The conditioning provides compensation of effect from such variation by a correlated energy modulation. We use our analytical FEL model for an electron bunch with Gaussian line charge density and cosine-type energy variation along bunch. We analyze the phase variation between the electron density modulation at the exit of the FEL-amplifier and the ions inducing it in the modulator as a function of the peak current and the electron beam energy. Based on this analysis, electron bunch parameters for optimal CeC cooling are found numerically.
Effects of E-beam Parameters on Coherent Electron Cooling
Effects of E-beam Parameters on Coherent Electron Cooling - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Effects of E-beam Parameters on Coherent Electron Cooling write by . This book was released on 2011. Effects of E-beam Parameters on Coherent Electron Cooling available in PDF, EPUB and Kindle. Coherent Electron Cooling (CeC) requires detailed control of the phase between the hadron an the FEL-amplified wave packet. This phase depends on local electron beam parameters such as the energy spread and the peak current. In this paper, we examine the effects of local density variations on the cooling rates for CeC. Coherent Electron Cooling (CeC) [1] is a new concept in intense, high energy hadron beamcooling, in which the Debye screened charge perturbation calculated in [2] is used to seed a high-gain free electron laser (FEL). Using delays to give the perturbing hadron an energy-dependent longitudinal displacement relative to its frequencymodulated charge perturbation, the hadron receives an energy-dependent kick which reduces its energy variation from the design energy. The equations of motion in [1] assume that the electron bunch is the same physical size as the hadron bunch, and has a homogeneous charge density across the entire bunch. In practice, the electron bunches will be much shorter than the hadron bunch, and this local spacial inhomogeneity in the charge distribution will alter the gain length of the FEL, resulting in both a change in the amplification of the initial signal and a phase shift. In this paper we consider these inhomogeneity effects, determining cooling equations for bunched beam CeC consistent with these effects and determining thresholds for the cooling parameters.
FREE ELECTRON LASERS AND HIGH-ENERGY ELECTRON COOLING.
FREE ELECTRON LASERS AND HIGH-ENERGY ELECTRON COOLING. - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook FREE ELECTRON LASERS AND HIGH-ENERGY ELECTRON COOLING. write by . This book was released on 2007. FREE ELECTRON LASERS AND HIGH-ENERGY ELECTRON COOLING. available in PDF, EPUB and Kindle. Cooling intense high-energy hadron beams remains a major challenge in modern accelerator physics. Synchrotron radiation of such beams is too feeble to provide significant cooling: even in the Large Hadron Collider (LHC) with 7 TeV protons, the longitudinal damping time is about thirteen hours. Decrements of traditional electron cooling decrease rapidly as the high power of beam energy, and an effective electron cooling of protons or antiprotons at energies above 100 GeV seems unlikely. Traditional stochastic cooling still cannot catch up with the challenge of cooling high-intensity bunched proton beams--to be effective, its bandwidth must be increased by about two orders-of-magnitude. Two techniques offering the potential to cool high-energy hadron beams are optical stochastic cooling (OSC) and coherent electron cooling (CEC)--the latter is the focus of this paper. In the early 1980s, CEC was suggested as a possibility for using various instabilities in an electron beam to enhance its interaction with hadrons (i.e., cooling them). The capabilities of present-day accelerator technology, Energy Recovery Linacs (ERLs), and high-gain Free-Electron Lasers (FELs), finally caught up with the idea and provided the all necessary ingredients for realizing such a process. In this paper, we discuss the principles, and the main limitations of the CEC process based on a high-gain FEL driven by an ERL. We also present, and summarize in Table 1, some numerical examples of CEC for ions and protons in RHIC and the LHC.
