Author: Liu, C.
Paper Title Page
MOPAB05 Global Optics Correction for Low Energy RHIC Run 34
 
  • C. Liu, K.A. Drees, A. Marusic, M.G. Minty, C. Montag
    BNL, Upton, Long Island, New York, USA
  
  Funding: The work was performed under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy.
There has been in­creas­ing in­ter­est in low en­ergy run in RHIC to study the QCD phase di­a­gram and search for the crit­i­cal point. The ma­chine op­tics is one of the crit­i­cal pieces for a suc­cess­ful low en­ergy run since it af­fects the lu­mi­nos­ity and its life­time. De­spite the dif­fi­cul­ties of tak­ing op­tics mea­sure­ment data, progress has been made in re­cent years to an­a­lyze and cor­rect the global op­tics er­rors. The analy­sis tech­nique and spe­cific ex­cep­tion han­dling, and the re­sults of op­tics cor­rec­tion for low en­ergy runs will be pre­sented in the re­port. 		 
 
MOPAB08 Longitudinal Dynamics Simulation at Transition Crossing in RHIC with New Landau Cavity 37
 
  • C. Liu, M. Blaskiewicz, J.M. Brennan, K. Mernick, M.G. Minty, C. Montag, K.S. Smith
    BNL, Upton, Long Island, New York, USA
  
  Funding: The work was performed under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy.
At RHIC, heavy ion beams cross tran­si­tion en­ergy dur­ing ac­cel­er­a­tion to en­er­gies re­quired by the physics pro­grams. In the past, to bat­tle lon­gi­tu­di­nal in­sta­bil­i­ties, a Lan­dau cav­ity was turned on just after ac­cel­er­a­tion through tran­si­tion en­ergy. The Lan­dau cav­ity with mod­i­fied fre­quency will be im­ple­mented be­fore beam crosses tran­si­tion in Run-14. Lon­gi­tu­di­nal dy­nam­ics with this new con­fig­u­ra­tion have been sim­u­lated to op­ti­mize the phase and am­pli­tude of the Lan­dau cav­ity. We will pre­sent sim­u­la­tion re­sults in the re­port.