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WEZA01 | RHIC Performance with Stochastic Cooling for Ions and Head-on Beam-beam Compensation for Protons | 2055 |
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Funding: Work supported by U.S. DOE under contract No DE-AC02-98CH10886 with the U.S. Department of Energy. The Relativistic Heavy Ion Collider (RHIC) has two main operating modes with heavy ions and polarized protons respectively. In addition to a continuous increase in the bunch intensity in all modes, two major new systems were completed recently mitigating the main luminosity limit and leading to significant performance improvements. For heavy ion operation stochastic cooling mitigates the effects of intrabeam scattering, and for polarized proton operation head-on beam-beam compensation mitigated the beam-beam effect. We present the performance increases with these upgrades for heavy ions and polarized protons, as well as an overview of all operating modes past and planned. |
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Slides WEZA01 [12.687 MB] | |
DOI • | reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEZA01 | |
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WEZA02 | The NICA Project at JINR | 2061 |
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The physics program and the present status of the project of NICA collider, which is under construction at JINR (Dubna), are presented. The main goal of the project is to provide ion beams for experimental studies of hot and dense strongly interacting baryonic matter and spin physics. The proposed physics program concentrates on the search for possible manifestations of the phase transitions and critical phenomena in the energy region, where the excited matter is produced with maximal achievable net baryon density, and clarification of the origin of nucleon spin. The collider will provide heavy ion collisions in the energy range of √sNN=4/11 GeV at average luminosity of L=1·1027cm−2·s−1 for 197Au79+ nuclei and polarized proton collisions in energy range of √sNN=12/27 GeV at luminosity of L≥1032cm−2·s-1. The key issue of the accelerator complex is application of sophisticated beam accumulation schemes and both stochastic and electron cooling methods. Strong space-charge effects in the collider arise a challenge to its optics and application of novel methods of beam stability maintenance. | ||
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Slides WEZA02 [17.880 MB] | |
DOI • | reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEZA02 | |
Export • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | |