ELECTRON COOLING SIMULATIONS FOR LOW-ENERGY RHIC OPERATION.

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Recently, a strong interest emerged in running the Relativistic Heavy Ion Collider (RHIC) at low beam total energies of 2.5-25 GeV/nucleon, substantially lower than the nominal beam total energy of 100 GeV/nucleon. Collisions in this low energy range are motivated by one of the key questions of quantum chromodynamics (QCD) about the existence and location of critical point on the QCD phase diagram. Applying electron cooling directly at these low energies in RHIC would result in significant luminosity increase and long beam stores for physics. Without direct cooling in RHIC at these low energies, beam lifetime and store times are ... continued below

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FEDOTOV,A.V.; BEN-ZVI, I.; CHANG, X.; KAYRAN, D. & SATOGATA, T. September 10, 2007.

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Recently, a strong interest emerged in running the Relativistic Heavy Ion Collider (RHIC) at low beam total energies of 2.5-25 GeV/nucleon, substantially lower than the nominal beam total energy of 100 GeV/nucleon. Collisions in this low energy range are motivated by one of the key questions of quantum chromodynamics (QCD) about the existence and location of critical point on the QCD phase diagram. Applying electron cooling directly at these low energies in RHIC would result in significant luminosity increase and long beam stores for physics. Without direct cooling in RHIC at these low energies, beam lifetime and store times are very short, limited by strong transverse and longitudinal intrabeam scattering (IBS). In addition, for the lowest energies of the proposed energy scan, the longitudinal emittance of ions injected from the AGS into RHIC may be too big to fit into the RHIC RF bucket. An improvement in the longitudinal emittance of the ion beam can be provided by an electron cooling system at the AGS injection energy. Simulations of electron cooling both for direct cooling at low energies in RHIC and for injection energy cooling in the AGS were performed and are summarized in this report.

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  • COOL 07 - WORKSHOP ON BEAM COOLING AND RELATED TOPICS; BAD KREUZNACH, GERMANY; 20070910 through 20070914

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  • Report No.: BNL--78081-2007-CP
  • Grant Number: DE-AC02-98CH10886
  • Office of Scientific & Technical Information Report Number: 918594
  • Archival Resource Key: ark:/67531/metadc885807

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • September 10, 2007

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  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 1, 2016, 5:18 p.m.

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FEDOTOV,A.V.; BEN-ZVI, I.; CHANG, X.; KAYRAN, D. & SATOGATA, T. ELECTRON COOLING SIMULATIONS FOR LOW-ENERGY RHIC OPERATION., article, September 10, 2007; United States. (digital.library.unt.edu/ark:/67531/metadc885807/: accessed December 15, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.