Author: Dutheil, Y.
Paper Title Page
MOPWA085 Spin Dynamics Simulations and Horizontal Intrinsic Resonance Studies in the AGS using the Zgoubi Code 870
 
  • Y. Dutheil, L. A. Ahrens, H. Huang, F. Méot, V.H. Ranjbar, T. Roser, V. Schoefer, N. Tsoupas
    BNL, Upton, Long Island, New York, USA
  
  Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy.
A crit­i­cal point for the po­lar­ized pro­ton pro­gram of the RHIC is the po­lar­iza­tion trans­mis­sion through the AGS ac­cel­er­a­tion cycle. Re­cent de­vel­op­ments in the Zgoubi model of the AGS allow multi-par­ti­cle track­ing with re­al­is­tic beam and ma­chine con­di­tions on a large scale com­put­ing sys­tem. This gives the op­por­tu­nity to sim­u­late the in­flu­ence of many beam and ma­chine con­di­tions on the po­lar­iza­tion trans­mis­sion and leads to a bet­ter un­der­stand­ing of the de­po­lar­iza­tion processes, for in­stance the hor­i­zon­tal in­trin­sic res­o­nances, that can­not be ac­cu­rately ex­plored by the con­ven­tional sim­u­la­tion ap­proaches or by the ex­per­i­ments with beam. This paper in­tro­duces the de­vel­op­ments re­al­ized on the Zgoubi code to run these sim­u­la­tions and shows some of the lat­est re­sults. 		 
 
TUYB103 Status and Plans for the Polarized Hadron Collider at RHIC 1106
 
  • M. Bai, L. A. Ahrens, E.C. Aschenauer, G. Atoian, J. Beebe-Wang, M. Blaskiewicz, J.M. Brennan, K.A. Brown, D. Bruno, R. Connolly, T. D'Ottavio, K.A. Drees, Y. Dutheil, O. Eyser, W. Fischer, C.J. Gardner, J.W. Glenn, X. Gu, M. Harvey, T. Hayes, H. Huang, R.L. Hulsart, A.I. Kirleis, J.S. Laster, C. Liu, Y. Luo, Y. Makdisi, G.J. Marr, A. Marusic, F. Méot, K. Mernick, R.J. Michnoff, M.G. Minty, C. Montag, J. Morris, S. Nemesure, P.H. Pile, A. Poblaguev, V. Ptitsyn, V.H. Ranjbar, G. Robert-Demolaize, T. Roser, W.B. Schmidke, V. Schoefer, F. Severino, T.C. Shrey, D. Smirnov, K.S. Smith, D. Steski, S. Tepikian, D. Trbojevic, N. Tsoupas, J.E. Tuozzolo, G. Wang, M. Wilinski, K. Yip, A. Zaltsman, A. Zelenski, K. Zeno, S.Y. Zhang
    BNL, Upton, Long Island, New York, USA
  
  Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy.
As the world’s only high en­ergy po­lar­ized pro­ton col­lider, the Rel­a­tivis­tic Heavy Ion Col­lider (RHIC) at Brookhaven Na­tional Lab­o­ra­tory (BNL) has been pro­vid­ing col­li­sions of po­lar­ized pro­ton beams at beam en­ergy from 100~GeV to 255~GeV for the past decade to ex­plore the pro­ton spin struc­ture as well as other spin de­pen­dent mea­sure­ments. With the help of two Siber­ian Snakes per ac­cel­er­a­tor plus out­stand­ing beam con­trol, beam po­lar­iza­tion is pre­served up to 100~GeV. About 10% po­lar­iza­tion loss has been ob­served dur­ing the ac­cel­er­a­tion be­tween 100~GeV and 255~GeV due to sev­eral strong de­po­lar­iz­ing res­o­nances. Mod­er­ate po­lar­iza­tion loss was also ob­served dur­ing a typ­i­cal 8 hour physics store. This pre­sen­ta­tion will overview the achieved per­for­mance of RHIC, both po­lar­iza­tion as well as lu­mi­nos­ity. The plan for pro­vid­ing high en­ergy po­lar­ized He-3 col­li­sions at RHIC will also be cov­ered.
This work is on behalf of RHIC team. 		 
slides icon Slides TUYB103 [12.854 MB]  
 
TUPFI084 RHIC Polarized Proton Operation for 2013 1544
 
  • V.H. Ranjbar, L. A. Ahrens, E.C. Aschenauer, M. Bai, J. Beebe-Wang, M. Blaskiewicz, J.M. Brennan, K.A. Brown, D. Bruno, R. Connolly, T. D'Ottavio, K.A. Drees, Y. Dutheil, W. Fischer, C.J. Gardner, J.W. Glenn, X. Gu, M. Harvey, T. Hayes, H. Huang, R.L. Hulsart, A.I. Kirleis, J.S. Laster, C. Liu, Y. Luo, Y. Makdisi, G.J. Marr, A. Marusic, F. Méot, K. Mernick, R.J. Michnoff, M.G. Minty, C. Montag, J. Morris, S. Nemesure, P.H. Pile, A. Poblaguev, V. Ptitsyn, G. Robert-Demolaize, T. Roser, W.B. Schmidke, V. Schoefer, F. Severino, T.C. Shrey, D. Smirnov, K.S. Smith, D. Steski, S. Tepikian, D. Trbojevic, N. Tsoupas, J.E. Tuozzolo, G. Wang, M. Wilinski, K. Yip, A. Zaltsman, A. Zelenski, K. Zeno, S.Y. Zhang
    BNL, Upton, Long Island, New York, USA
  • O. Eyser
    UCR, Riverside, California, USA
  
  Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy.
The 2013 op­er­a­tion of the Rel­a­tivis­tic Heavy Ion Col­lider (RHIC) marks the sec­ond year of run­ning under the RHIC II era. Ad­di­tion­ally this year saw the im­ple­men­ta­tion of sev­eral im­por­tant up­grades de­signed to push the in­ten­sity fron­tier. Two new E-lenses have been in­stalled, along with a new lat­tice de­signed for the E-lens op­er­a­tion. A new po­lar­ized pro­ton source which gen­er­ates about fac­tor of 2 more in­ten­sity was com­mis­sioned as well as a host of RF up­grades from a new lon­gi­tu­di­nal damper, Lan­dau cav­ity in RHIC to a new low level RF and new har­monic struc­ture for the AGS. We pre­sent an overview of the chal­lenges and re­sults from this years run. 		 
 
WEPEA082 AGS Model in Zgoubi. RHIC Run 13 Polarization Modeling. Status. 2699
 
  • F. Méot, L. A. Ahrens, K.A. Brown, Y. Dutheil, J.W. Glenn, C.E. Harper, H. Huang, V.H. Ranjbar, T. Roser, V. Schoefer, N. Tsoupas
    BNL, Upton, Long Island, New York, USA
  
  Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy.
This paper gives a sta­tus of the AGS model in the ray-trac­ing code Zgoubi and its op­er­a­tion via the ‘‘AgsZ­goubi­Model'' and the ‘‘AgsMod­elViewer'' ap­pli­ca­tions avail­able from the con­trols sys­tem ap­pli­ca­tion launcher, ‘‘StartUp''. Ex­am­ples of typ­i­cal uses and stud­ies per­formed using these are in­cluded, as op­tics con­trols, spin match­ing to RHIC, etc. A com­pan­ion paper (MOP­WA085) gives ad­di­tional de­tails, re­gard­ing es­pe­cially spin dy­nam­ics and po­lar­iza­tion stud­ies aimed at de­ter­min­ing op­ti­mal AGS set­tings for po­lar­iza­tion dur­ing RHIC Run 13. This work is an ad­di­tional step to­wards fur­ther com­bi­na­tion with the al­ready ex­ist­ing RHIC spin track­ing model in Zgoubi, and AGS's Booster model in Zgoubi, a promis­ing suite for de­tailed beam and spin dy­nam­ics stud­ies and op­ti­miza­tions.