Included are experiments at BEPC (Beijing), BNL, CEBAF, CERN, CESR, DESY, FNAL, Frascati, ITEP (Moscow), JINR (Dubna), KEK, LAMPF, Novosibirsk, PNPI (St. This report contains summaries of current and recent experiments in Particle Physics. 1996 Edition.ĭOE Office of Scientific and Technical Information (OSTI.GOV) Further details may be found in these papers.Ĭurrent Experiments in Particle Physics. This paper contains the outline and the basis for a set of papers documenting the reconfiguration of the storage ring and the associated instrumentation required for the studies described above. While the initial studies of CESRTA focussed on questions related to the International Linear Collider (ILC) damping ring design, CESRTA is a very flexible storage ring, capable of studying a wide range of accelerator physics and instrumentation questions. This paper outlines the motivation, design and conversion of CESR to a test accelerator, CESRTA, enhanced to study such subjects as low emittance tuning methods, electron cloud (EC) effects, intra-beam scattering, fast ion instabilities as well as general improvements to beam instrumentation. Additionally a number of these are also relevant for the beam physics of proton accelerators. CESR's energy span from 1.8 to 5.6 GeV with both electrons and positrons makes it ideal for the study of a wide spectrum of accelerator physics issues and instrumentation related to present light sources and future lepton damping rings. Part 1: overviewĬornell's electron/positron storage ring ( CESR) was modified over a series of accelerator shutdowns beginning in May 2008, which substantially improves its capability for research and development for particle accelerators. The conversion of CESR to operate as the Test Accelerator, CesrTA. ![]() This paper provides an overview of types of measurements employed for the study of beam dynamics during the operation of CesrTA. To complete this research, a number of procedures were developed or modified, often requiring coordinated measurements among different instruments. Much of the pre-existing instrumentation was modified to accommodate the scope of these studies and these are described in a companion paper. A number of specific instruments were developed for CesrTA. The complete conversion of CESR to CesrTA occurred over a several year period, described elsewhere. These topics included 1) tuning techniques to produce low emittance beams, 2) the study of electron cloud (EC) development in a storage ring and 3) intra-beam scattering effects. Initially some specific topics were targeted for accelerator physic research with the storage ring in this mode, labeled CesrTA. Over the course of several years CESR was adapted for accelerator physics research as a test accelerator, capable of studying topics relevant to future damping rings, colliders and light sources. Flanagan, J.Īfter operating as a High Energy Physics electron-positron collider, the Cornell Electron-positron Storage Ring ( CESR) has been converted to become a dedicated synchrotron light source for the Cornell High Energy Synchrotron Source (CHESS). Measurement techniques for low emittance tuning and beam dynamics at CESRīilling, M. This paper describes the new CBPM system hardware, its function and representative measurements performed by the upgraded system. As a part of this conversion the CESR beam position monitoring (CBPM) system was completely upgraded to provide the needed instrumental capabilities for these studies. The complete conversion of CESR to CESRTA occurred over a several year period and is described elsewhere. ![]() ![]() Some of the specific topics that were targeted for the initial phase of operation of the storage ring in this mode, labeled CESRTA ( CESR as a Test Accelerator), included 1) tuning techniques to produce low emittance beams, 2) the study of electron cloud development in a storage ring and 3) intra-beam scattering effects. The Cornell Electron-positron Storage Ring ( CESR) has been converted from a High Energy Physics electron-positron collider to operate as a dedicated synchrotron light source for the Cornell High Energy Synchrotron Source (CHESS) and to conduct accelerator physics research as a test accelerator, capable of studying topics relevant to future damping rings, colliders and light sources.
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