Author: Berg, J.S.
Paper Title Page
MOYD5 Tolerances of Crab Dispersion at the Interaction Point in the Hadron Storage Ring of the Electron-Ion Collider 12
 
  • Y. Luo, J.S. Berg, M. Blaskiewicz, C. Montag, V. Ptitsyn, F.J. Willeke, D. Xu
    BNL, Upton, New York, USA
  • Y. Hao
    FRIB, East Lansing, Michigan, USA
  • V.S. Morozov
    ORNL RAD, Oak Ridge, Tennessee, USA
  • J. Qiang
    LBNL, Berkeley, California, USA
  • T. Satogata
    JLab, Newport News, Virginia, USA
 
  Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy.
The Electron Ion Collider (EIC) presently under construction at Brookhaven National Laboratory will collide polarized high energy electron beams with hadron beams with luminosity up to 1034 cm-2 s-1 in the center mass energy range of 20 to 140 GeV. Due to the detector solenoid in the interaction region, the design horizontal crabbing angle will be coupled to the vertical plane if uncompensated. In this article, we estimate the tolerance of crab dispersion at the interaction point in the EIC Hadron Storage Ring (HSR). Both strong-strong and weak-strong simulations are used. We found that there is a tight tolerance of vertical crabbing angle at the interaction point in the HSR.
 
slides icon Slides MOYD5 [1.183 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-NAPAC2022-MOYD5  
About • Received ※ 01 August 2022 — Accepted ※ 04 August 2022 — Issue date ※ 15 August 2022  
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MOYD6
Chromatic Correction of the EIC Electron Ring Lattice  
 
  • Y. Cai, Y.M. Nosochkov
    SLAC, Menlo Park, California, USA
  • J.S. Berg, J. Kewisch, Y. Li, D. Marx, C. Montag, S. Tepikian, F.J. Willeke
    BNL, Upton, New York, USA
  • G.H. Hoffstaetter, J.E. Unger
    Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
 
  We have developed a new chromatic compensation scheme for the electron storage ring with two low-beta interaction regions in the electron-ion collider. The hybrid scheme consists of modular chromatic matching of periodic systems and beamlines. The first-order chromatically matched solutions are linearly parameterized with the local linear chromaticities that control the higher order chromatic beatings. The parameterization enables an efficient optimization of dynamic aperture. As a result, we successfully achieve the 1% design criterion for the momentum aperture in the ring.  
slides icon Slides MOYD6 [1.667 MB]  
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WEPA15 High-Field Design Concept for Second Interaction Region of the Electron-Ion Collider 648
 
  • B.R. Gamage, R. Ent, R. Rajput-Ghoshal, T. Satogata, A. Seryi, W. Wittmer, Y. Zhang
    JLab, Newport News, Virginia, USA
  • D. Arbelaez, P. Ferracin, G.L. Sabbi
    LBNL, Berkeley, California, USA
  • E.C. Aschenauer, J.S. Berg, H. Witte
    BNL, Upton, New York, USA
  • V.S. Morozov
    ORNL RAD, Oak Ridge, Tennessee, USA
  • F. Savary
    CERN, Meyrin, Switzerland
  • P.N. Vedrine
    CEA-DRF-IRFU, France
  • A.V. Zlobin
    Fermilab, Batavia, Illinois, USA
 
  Funding: Contract No. DE-AC05-06OR23177, Contract No. DE-SC0012704 and Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy.
Efficient realization of the scientific potential of the Electron Ion Collider (EIC) calls for addition of a future second Interaction Region (2nd IR) and a detector in the RHIC IR8 region after the EIC project completion. The second IR and detector are needed to independently cross-check the results of the first detector, and to provide measurements with complementary acceptance. The available space in the existing RHIC IR8 and maximum fields achievable with NbTi superconducting magnet technology impose constraints on the 2nd IR performance. Since commissioning of the 2nd IR is envisioned in a few years after the first IR, such a long time frame allows for more R&D on the Nb3Sn magnet technology. Thus, it could provide a potential alternative technology choice for the 2nd IR magnets. Presently, we are exploring its potential benefits for the 2nd IR performance, such as improvement of the luminosity and acceptance, and are also assessing the technical risks associated with use of Nb3Sn magnets. In this paper, we present the current progress of this work.
 
DOI • reference for this paper ※ doi:10.18429/JACoW-NAPAC2022-WEPA15  
About • Received ※ 04 August 2022 — Revised ※ 11 August 2022 — Accepted ※ 17 August 2022 — Issue date ※ 31 August 2022
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WEPA75 {6-D} Element-by-Element Particle Tracking with Crab Cavity Phase Noise and Weak-Strong Beam-Beam Interaction for the Hadron Storage Ring of the Electron-Ion Collider 809
 
  • Y. Luo, J.S. Berg, M. Blaskiewicz, C. Montag, V. Ptitsyn, F.J. Willeke, D. Xu
    BNL, Upton, New York, USA
  • Y. Hao
    FRIB, East Lansing, Michigan, USA
  • H. Huang
    ODU, Norfolk, Virginia, USA
  • V.S. Morozov
    ORNL RAD, Oak Ridge, Tennessee, USA
  • J. Qiang
    LBNL, Berkeley, California, USA
  • T. Satogata
    JLab, Newport News, Virginia, USA
 
  Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy.
The Electron Ion Collider (EIC) presently under construction at Brookhaven National Laboratory will collide polarized high energy electron beams with hadron beams with luminosity up to 1034 cm-2 s-1 in the center mass energy range of 20 to 140 GeV. Crab cavities are used to compensate the geometric luminosity due to a large crossing angle in the EIC. However, it was found that the phase noise in crab cavities will generate a significant emittance growth for hadron beams and its tolerance from analytical calculation is very small for the Hadron Storage Ring (HSR) of the EIC. In this paper, we report on 6-D symplectic particle tracking to estimate the proton emittance growth rate, especially in the vertical plane, for the HSR with weak-strong beam-beam and other machine or lattice errors.
 
DOI • reference for this paper ※ doi:10.18429/JACoW-NAPAC2022-WEPA75  
About • Received ※ 01 August 2022 — Revised ※ 06 August 2022 — Accepted ※ 09 August 2022 — Issue date ※ 19 August 2022
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