An Energy Recovery Electron Linac-on-Proton Ring Collider

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Electron-proton colliders with center of mass energies between 14 GeV and 30 GeV and luminosities at the 10{sup 33} level have been proposed recently as a means for studying hadronic structure [1]. Electron beam polarization appears to be crucial for the majority of experiments. Two accelerator design scenarios have been examined in detail: colliding rings [2] and recirculating linac-on-ring [3]. Although the linac-on-ring scenario is not as well understood as the ring-ring scenario, comparable luminosities appear feasible, while the linac-on-ring option presents a significant advantage with spin manipulations. Rf power and beam dump requirements make the linac-on-ring option viable only ... continued below

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356 Kilobytes pages

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Merminga, L.; Krafft, G. & Lebedev, V. March 1, 2001.

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Electron-proton colliders with center of mass energies between 14 GeV and 30 GeV and luminosities at the 10{sup 33} level have been proposed recently as a means for studying hadronic structure [1]. Electron beam polarization appears to be crucial for the majority of experiments. Two accelerator design scenarios have been examined in detail: colliding rings [2] and recirculating linac-on-ring [3]. Although the linac-on-ring scenario is not as well understood as the ring-ring scenario, comparable luminosities appear feasible, while the linac-on-ring option presents a significant advantage with spin manipulations. Rf power and beam dump requirements make the linac-on-ring option viable only if the electron linac recovers the beam energy, a technology demonstrated at Jefferson Lab's IR FEL, with cw current up to 5 mA and beam energy up to 50 MeV [4]. We begin with a brief overview of the Jefferson Lab energy recovery FEL and summarize the benefits of energy recovery. The feasibility of an energy recovery linac-ring collider is investigated and two conceptual point designs are shown. Luminosity projections for the linac-ring scenario based on fundamental limitations are presented. Accelerator physics issues are discussed and we conclude with a list of required R and D for the realization of such a design.

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356 Kilobytes pages

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  • Proceedings of HEACC 2001, Tsukuba (JP), 03/26/2001--03/30/2001

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  • Report No.: JLAB-ACP-01-01
  • Report No.: DOE/ER/40150-1839
  • Grant Number: AC05-84ER40150
  • Office of Scientific & Technical Information Report Number: 779409
  • Archival Resource Key: ark:/67531/metadc725328

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  • March 1, 2001

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  • Sept. 29, 2015, 5:31 a.m.

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  • Feb. 5, 2016, 8:04 p.m.

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Merminga, L.; Krafft, G. & Lebedev, V. An Energy Recovery Electron Linac-on-Proton Ring Collider, article, March 1, 2001; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc725328/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.