Author: Marx, D.
Paper Title Page
TUPAB235 Dynamic Aperture Optimization in the EIC Electron Storage Ring with Two Interaction Points 1984
 
  • D. Marx, Y. Li, C. Montag, S. Tepikian, F.J. Willeke
    BNL, Upton, New York, USA
  • Y. Cai, Y.M. Nosochkov
    SLAC, Menlo Park, California, USA
  • G.H. Hoffstaetter, J.E. Unger
    Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
 
  Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 and by SLAC under Contract No. DE-AC02-76SF00515 with the U.S. Department of Energy.
In the Elec­tron-Ion Col­lider (EIC), which is cur­rently being de­signed for con­struc­tion at Brookhaven Na­tional Lab­o­ra­tory, elec­trons from the elec­tron stor­age ring will col­lide with hadrons, pro­duc­ing lu­mi­nosi­ties up to 1034 cm-2 s-1. The base­line de­sign in­cludes only one in­ter­ac­tion point (IP), and op­tics have been found with a suit­able dy­namic aper­ture in each di­men­sion. How­ever, the EIC pro­ject asks for the op­tion of a sec­ond IP. The strong fo­cus­ing re­quired at the IPs cre­ates a very large nat­ural chro­matic­ity (about -125 in the ver­ti­cal plane for the ring). Com­pen­sat­ing this lin­ear chro­matic­ity while si­mul­ta­ne­ously con­trol­ling the non­lin­ear chro­matic­ity to high order to achieve a suf­fi­cient mo­men­tum ac­cep­tance of 1% (10 σ) at 18 GeV is a con­sid­er­able chal­lenge. A scheme to com­pen­sate higher-or­der chro­matic ef­fects from 2 IPs by set­ting the phase ad­vance be­tween them does not, by it­self, pro­vide the re­quired mo­men­tum ac­cep­tance for the EIC Elec­tron Stor­age Ring. A thor­ough de­sign of the non­lin­ear op­tics is un­der­way to in­crease the mo­men­tum ac­cep­tance using mul­ti­ple sex­tu­pole fam­i­lies, and the lat­est re­sults are pre­sented here.
 
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB235  
About • paper received ※ 19 May 2021       paper accepted ※ 19 July 2021       issue date ※ 20 August 2021  
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WEPAB005 Design Status Update of the Electron-Ion Collider 2585
 
  • C. Montag, E.C. Aschenauer, G. Bassi, J. Beebe-Wang, J.S. Berg, M. Blaskiewicz, A. Blednykh, J.M. Brennan, S.J. Brooks, K.A. Brown, Z.A. Conway, K.A. Drees, A.V. Fedotov, W. Fischer, C. Folz, D.M. Gassner, X. Gu, R.C. Gupta, Y. Hao, A. Hershcovitch, C. Hetzel, D. Holmes, H. Huang, W.A. Jackson, J. Kewisch, Y. Li, C. Liu, H. Lovelace III, Y. Luo, M. Mapes, D. Marx, G.T. McIntyre, F. Méot, M.G. Minty, S.K. Nayak, R.B. Palmer, B. Parker, S. Peggs, B. Podobedov, V. Ptitsyn, V.H. Ranjbar, G. Robert-Demolaize, S. Seletskiy, V.V. Smaluk, K.S. Smith, S. Tepikian, R. Than, P. Thieberger, D. Trbojevic, N. Tsoupas, J.E. Tuozzolo, S. Verdú-Andrés, E. Wang, D. Weiss, F.J. Willeke, H. Witte, Q. Wu, W. Xu, A. Zaltsman, W. Zhang
    BNL, Upton, New York, USA
  • S.V. Benson, J.M. Grames, F. Lin, T.J. Michalski, V.S. Morozov, E.A. Nissen, J.P. Preble, R.A. Rimmer, T. Satogata, A. Seryi, M. Wiseman, W. Wittmer, Y. Zhang
    JLab, Newport News, Virginia, USA
  • Y. Cai, Y.M. Nosochkov, G. Stupakov, M.K. Sullivan
    SLAC, Menlo Park, California, USA
  • K.E. Deitrick, C.M. Gulliford, G.H. Hoffstaetter, J.E. Unger
    Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
  • E. Gianfelice-Wendt
    Fermilab, Batavia, Illinois, USA
  • T. Satogata
    ODU, Norfolk, Virginia, USA
  • D. Xu
    FRIB, East Lansing, Michigan, USA
 
  Funding: Work supported by BSA, LLC under Contract No. DE-SC0012704, by JSA, LLC under Contract No. DE-AC05-06OR23177, and by SLAC under Contract No. DE-AC02-76SF00515 with the U.S. Department of Energy.
The de­sign of the elec­tron-ion col­lider EIC to be con­structed at Brookhaven Na­tional Lab­o­ra­tory has been con­tin­u­ously evolv­ing to­wards a re­al­is­tic and ro­bust de­sign that meets all the re­quire­ments set forth by the nu­clear physics com­mu­nity in the White Paper. Over the past year ac­tiv­i­ties have been fo­cused on ma­tur­ing the de­sign, and on de­vel­op­ing al­ter­na­tives to mit­i­gate risk. These in­clude im­prove­ments of the in­ter­ac­tion re­gion de­sign as well as mod­i­fi­ca­tions of the hadron ring vac­uum sys­tem to ac­com­mo­date the high av­er­age and peak beam cur­rents. Beam dy­nam­ics stud­ies have been per­formed to de­ter­mine and op­ti­mize the dy­namic aper­ture in the two col­lider rings and the beam-beam per­for­mance. We will pre­sent the EIC de­sign with a focus on re­cent de­vel­op­ments.
 
poster icon Poster WEPAB005 [2.095 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB005  
About • paper received ※ 14 May 2021       paper accepted ※ 22 June 2021       issue date ※ 16 August 2021  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)