ACHROMATIC LOW-BETA INTERACTION REGION DESIGN FOR AN ELECTRON-ION COLLIDER

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An achromatic Interaction Region (IR) design concept is presented with an emphasis on its application at an electron-ion collider. A specially-designed symmetric Chromaticity Compensation Block (CCB) induces an angle spread in the passing beam such that it cancels the chromatic kick of the final focusing quadrupoles. Two such CCB's placed symmetrically around an interaction point (IP) allow simultaneous compensation of the 1st-order chromaticities and chromatic beam smear at the IP without inducing significant 2nd-order aberrations. Special attention is paid to the difference in the electron and ion IR design requirements. We discuss geometric matching of the electron and ion IR ... continued below

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Vasiliy Morozov, Yaroslav Derbenev September 1, 2011.

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An achromatic Interaction Region (IR) design concept is presented with an emphasis on its application at an electron-ion collider. A specially-designed symmetric Chromaticity Compensation Block (CCB) induces an angle spread in the passing beam such that it cancels the chromatic kick of the final focusing quadrupoles. Two such CCB's placed symmetrically around an interaction point (IP) allow simultaneous compensation of the 1st-order chromaticities and chromatic beam smear at the IP without inducing significant 2nd-order aberrations. Special attention is paid to the difference in the electron and ion IR design requirements. We discuss geometric matching of the electron and ion IR footprints. We investigate limitations on the momentum acceptance in this IR design.

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  • IPAC2011, 4-9 Sep 2011, San Sebastian, Spain

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  • Report No.: JLAB-ACP-12-3
  • Report No.: DOE/OR/23177-1842
  • Grant Number: AC05-06OR23177
  • Office of Scientific & Technical Information Report Number: 1029321
  • Archival Resource Key: ark:/67531/metadc841100

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  • September 1, 2011

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  • May 19, 2016, 3:16 p.m.

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  • Aug. 3, 2016, 6:13 p.m.

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Vasiliy Morozov, Yaroslav Derbenev. ACHROMATIC LOW-BETA INTERACTION REGION DESIGN FOR AN ELECTRON-ION COLLIDER, article, September 1, 2011; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc841100/: accessed July 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.