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Title: Beam-beam observations in the Relativistic Heavy Ion Collider

Abstract

The Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory has been operating since 2000. Over the past decade, thanks to the continuously increased bunch intensity and reduced β*s at the interaction points, the maximum peak luminosity in the polarized proton operation has been increased by more than two orders of magnitude. In this article, we first present the beam-beam observations in the previous RHIC polarized proton runs. Then we analyze the mechanisms for the beam loss and emittance growth in the presence of beam-beam interaction. The operational challenges and limitations imposed by beam-beam interaction and their remedies are also presented. In the end, we briefly introduce head-on beam-beam compensation with electron lenses in RHIC.

Authors:
 [1];  [1];  [1]
  1. Brookhaven National Laboratory (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1222607
Report Number(s):
BNL-108394-2015-IR
R&D Project: KBCH139; 18031; KB0202011
DOE Contract Number:  
SC00112704
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; Relativistic Heavy Ion Collider

Citation Formats

Luo, Y., Fischer, W., and White, S. Beam-beam observations in the Relativistic Heavy Ion Collider. United States: N. p., 2015. Web. doi:10.2172/1222607.
Luo, Y., Fischer, W., & White, S. Beam-beam observations in the Relativistic Heavy Ion Collider. United States. https://doi.org/10.2172/1222607
Luo, Y., Fischer, W., and White, S. 2015. "Beam-beam observations in the Relativistic Heavy Ion Collider". United States. https://doi.org/10.2172/1222607. https://www.osti.gov/servlets/purl/1222607.
@article{osti_1222607,
title = {Beam-beam observations in the Relativistic Heavy Ion Collider},
author = {Luo, Y. and Fischer, W. and White, S.},
abstractNote = {The Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory has been operating since 2000. Over the past decade, thanks to the continuously increased bunch intensity and reduced β*s at the interaction points, the maximum peak luminosity in the polarized proton operation has been increased by more than two orders of magnitude. In this article, we first present the beam-beam observations in the previous RHIC polarized proton runs. Then we analyze the mechanisms for the beam loss and emittance growth in the presence of beam-beam interaction. The operational challenges and limitations imposed by beam-beam interaction and their remedies are also presented. In the end, we briefly introduce head-on beam-beam compensation with electron lenses in RHIC.},
doi = {10.2172/1222607},
url = {https://www.osti.gov/biblio/1222607}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jun 24 00:00:00 EDT 2015},
month = {Wed Jun 24 00:00:00 EDT 2015}
}