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Title: RHIC BBLR measurements in 2009

Abstract

Long range beam-beam experiments were conducted during the Run 2009 in the Yellow and the Blue beams of the RHIC accelerator with DC wires. The effects of a long-range interaction with a DC wire on colliding and non-colliding bunches with the aid of beam losses, orbits, tunes were studied. Results from distance scans and an attempt to compensate a long-range interaction with a DC wire is presented. Two DC wires in the vertical plane were installed in the RHIC accelerator in 2006 with the aim of investigating long range (LR) beam-beam effects and a potential compensation. Extensive experiments were conducted focusing mainly on the effect of a wire on single ion beams from 2006-2009. A unique opportunity to compare the effect of the wire on colliding beams and compensation of a single LR beam-beam interaction were conducted in Run2009 with protons at 100 GeV. Due to aperture considerations for decreasing {beta}*, the Blue wire was removed during the shutdown after the Run2009 and the Yellow wire is foreseen to be removed in the near future. Therefore, these experiments serve as the final set of measurements for LR beam-beam with RHIC as a test bed. The relevant RHIC beam and latticemore » parameters are listed in Table 1 for the experiments in Run2009.« less

Authors:
; ;
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States). Relativistic Heavy Ion Collider (RHIC)
Sponsoring Org.:
DOE - Office Of Science
OSTI Identifier:
1013481
Report Number(s):
BNL-90760-2010-CP
R&D Project: KBCH139; KB0202011; TRN: US1102480
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Conference
Resource Relation:
Conference: First International Particle Accelerator Conference (IPAC) 2010; Kyoto, Japan; 20100523 through 20100528
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATORS; APERTURES; BEAM-BEAM INTERACTIONS; COLLIDING BEAMS; FOCUSING; INTERACTION RANGE; ION BEAMS; LATTICE PARAMETERS; PROTONS; SHUTDOWN; relativistic heavy ion collider

Citation Formats

Calaga, R, Robert-Demolaize, G, and Fischer, W. RHIC BBLR measurements in 2009. United States: N. p., 2010. Web.
Calaga, R, Robert-Demolaize, G, & Fischer, W. RHIC BBLR measurements in 2009. United States.
Calaga, R, Robert-Demolaize, G, and Fischer, W. 2010. "RHIC BBLR measurements in 2009". United States. https://www.osti.gov/servlets/purl/1013481.
@article{osti_1013481,
title = {RHIC BBLR measurements in 2009},
author = {Calaga, R and Robert-Demolaize, G and Fischer, W},
abstractNote = {Long range beam-beam experiments were conducted during the Run 2009 in the Yellow and the Blue beams of the RHIC accelerator with DC wires. The effects of a long-range interaction with a DC wire on colliding and non-colliding bunches with the aid of beam losses, orbits, tunes were studied. Results from distance scans and an attempt to compensate a long-range interaction with a DC wire is presented. Two DC wires in the vertical plane were installed in the RHIC accelerator in 2006 with the aim of investigating long range (LR) beam-beam effects and a potential compensation. Extensive experiments were conducted focusing mainly on the effect of a wire on single ion beams from 2006-2009. A unique opportunity to compare the effect of the wire on colliding beams and compensation of a single LR beam-beam interaction were conducted in Run2009 with protons at 100 GeV. Due to aperture considerations for decreasing {beta}*, the Blue wire was removed during the shutdown after the Run2009 and the Yellow wire is foreseen to be removed in the near future. Therefore, these experiments serve as the final set of measurements for LR beam-beam with RHIC as a test bed. The relevant RHIC beam and lattice parameters are listed in Table 1 for the experiments in Run2009.},
doi = {},
url = {https://www.osti.gov/biblio/1013481}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun May 23 00:00:00 EDT 2010},
month = {Sun May 23 00:00:00 EDT 2010}
}

Conference:
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