Author: Sangroula, M.P.
Paper Title Page
WEPA85 Localized Beam Induced Heating Analysis of the EIC Vacuum Chamber Components 833
 
  • M.P. Sangroula, D.M. Gassner, C.J. Liaw, C. Liu, P. Thieberger
    BNL, Upton, New York, USA
  • J.R. Bellon, A. Blednykh, C. Hetzel, S. Verdú-Andrés
    Brookhaven National Laboratory (BNL), Electron-Ion Collider, Upton, New York, 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), to be built at Brookhaven Na­tional Lab­o­ra­tory (BNL), is de­signed to pro­vide a high elec­tron-pro­ton lu­mi­nos­ity of 1034 cm-2 s-1. One of the chal­leng­ing tasks for the Elec­tron Stor­age Ring (ESR) is to op­er­ate at an av­er­age beam cur­rent of 2.5 A within 1160 bunches with a ~ 7 mm bunch length. The Hadron Stor­age Ring (HSR) will ac­cu­mu­late an av­er­age cur­rent of 0.69 A within 290 bunches with a 60 mm bunch length. Both rings re­quire the im­ped­ance bud­get sim­u­la­tions. The in­tense e-beam in the ESR can lead to the over­heat­ing of vac­uum cham­ber com­po­nents due to lo­cal­ized metal­lic losses. This paper fo­cuses on the beam-in­duced heat­ing analy­sis of the ESR vac­uum com­po­nents in­clud­ing bel­lows, gate-valve, and BPM. To per­form ther­mal analy­sis, the re­sis­tive loss on in­di­vid­ual com­po­nents is cal­cu­lated with CST and then fed to ANSYS to de­ter­mine the tem­per­a­ture dis­tri­b­u­tion on the vac­uum com­po­nents. Pre­lim­i­nary re­sults sug­gest that ac­tive water cool­ing will be re­quired for most of the ESR vac­uum com­po­nents. Sim­i­lar ap­proach is ap­plied to the HSR vac­uum com­po­nents. The ther­mal analy­sis of the HSR stripline in­jec­tion kicker is pre­sented.
 
DOI • reference for this paper ※ doi:10.18429/JACoW-NAPAC2022-WEPA85  
About • Received ※ 03 August 2022 — Revised ※ 08 August 2022 — Accepted ※ 10 August 2022 — Issue date ※ 10 September 2022
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