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Title: High energy Coulomb-scattered electrons for relativistic particle beams and diagnostics

A new system used for monitoring energetic Coulomb-scattered electrons as the main diagnostic for accurately aligning the electron and ion beams in the new Relativistic Heavy Ion Collider (RHIC) electron lenses is described in detail. The theory of electron scattering from relativistic ions is developed and applied to the design and implementation of the system used to achieve and maintain the alignment. Commissioning with gold and 3He beams is then described as well as the successful utilization of the new system during the 2015 RHIC polarized proton run. Systematic errors of the new method are then estimated. Lastly, some possible future applications of Coulomb-scattered electrons for beam diagnostics are briefly discussed.
Authors:
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  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. European Synchrotron Radiation Facility, Grenoble Cedex (France)
Publication Date:
Report Number(s):
BNL-111997-2016-JA
Journal ID: ISSN 2469-9888; R&D Project: KBCH139; 18035; KB0202011
Grant/Contract Number:
SC00112704
Type:
Published Article
Journal Name:
Physical Review Accelerators and Beams (Online)
Additional Journal Information:
Journal Name: Physical Review Accelerators and Beams (Online); Journal Volume: 19; Journal Issue: 4; Journal ID: ISSN 2469-9888
Publisher:
American Physical Society (APS)
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS
OSTI Identifier:
1249692
Alternate Identifier(s):
OSTI ID: 1246807