A split-electrode for clearing scattered electrons in the RHIC e-lens

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We are designing two electron lenses that will be installed at RHIC IR10 to compensate for the head-on beam-beam effect. To clear accumulated scattered electrons from 100 GeV proton-electron head-on collisions in the e-lens, a clearing split electrode may be constructed. The feasibility of this proposed electrode was demonstrated via the CST Particle Studio and Opera program simulations. By splitting one of the drift tubes in the e-lens and applying {approx} 380 V across the two parts, the scattered electrons can be cleared out within several hundred micro-seconds. At the same time we can restrict the unwanted shift of the ... continued below

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X., Gu; Pikin, A.; Thieberger, P.; Fischer, W.; Hock, J.; Hamdi, K. et al. May 20, 2012.

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We are designing two electron lenses that will be installed at RHIC IR10 to compensate for the head-on beam-beam effect. To clear accumulated scattered electrons from 100 GeV proton-electron head-on collisions in the e-lens, a clearing split electrode may be constructed. The feasibility of this proposed electrode was demonstrated via the CST Particle Studio and Opera program simulations. By splitting one of the drift tubes in the e-lens and applying {approx} 380 V across the two parts, the scattered electrons can be cleared out within several hundred micro-seconds. At the same time we can restrict the unwanted shift of the primary electron-beam that already passed the 2-m interaction region in e-lens, to less than 15um.

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  • 2012 International Particle Accelerator Conference (IPAC 2012); New Orleans, LA; 20120520 through 20120525

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  • Report No.: BNL--96806-2012-CP
  • Grant Number: DE-AC02-98CH10886
  • Office of Scientific & Technical Information Report Number: 1049276
  • Archival Resource Key: ark:/67531/metadc840898

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  • May 20, 2012

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  • May 19, 2016, 9:45 a.m.

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  • June 9, 2016, 7:16 p.m.

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X., Gu; Pikin, A.; Thieberger, P.; Fischer, W.; Hock, J.; Hamdi, K. et al. A split-electrode for clearing scattered electrons in the RHIC e-lens, article, May 20, 2012; United States. (digital.library.unt.edu/ark:/67531/metadc840898/: accessed October 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.