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Title: Proposed electron halo detector system as one of the beam overlap diagnostic tools for the new RHIC electron lens

Abstract

An electron lens for head-on beam-beam compensation planned for RHIC requires precise overlap of the electron and proton beams which both can have down to 0.3 mm rms transverse radial widths along the 2m long interaction region. Here we describe a new diagnostic tool that is being considered to aid in the tuning and verification of this overlap. Some of ultra relativistic protons (100 or 250 GeV) colliding with low energy electrons (2 to 10 keV) will transfer sufficient transverse momentum to cause the electrons to spiral around the magnetic guiding field in a way that will make them detectable outside of the main solenoid. Time-of-flight of the halo electron signals will provide position-sensitive information along the overlap region. Scattering cross sections are calculated and counting rate estimates are presented as function of electron energy and detector position.

Authors:
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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:
1011454
Report Number(s):
BNL-94132-2011-CP
R&D Project: KBCH139; 18041; KB0202011; TRN: US1102175
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Conference
Resource Relation:
Conference: 2011 Particle Accelerator Conference (PAC'11); New York, NY; 20110328 through 20110401
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATORS; COUNTING RATES; CROSS SECTIONS; ELECTRONS; PROTON BEAMS; PROTONS; SCATTERING; TRANSVERSE MOMENTUM; TUNING; VERIFICATION; relativistic heavy ion collider

Citation Formats

Thieberger, P, Alessi, J, Beebe, E, Chasman, C, Fischer, W, Gassner, D, Gu, X, Gupta, R, Hock, J, Lambiase, R, Montag, C, Luo, Y, Minty, M, Okamura, M, Pikin, A, Tan, Y, Tuozzolo, J, and Zhang, W. Proposed electron halo detector system as one of the beam overlap diagnostic tools for the new RHIC electron lens. United States: N. p., 2011. Web.
Thieberger, P, Alessi, J, Beebe, E, Chasman, C, Fischer, W, Gassner, D, Gu, X, Gupta, R, Hock, J, Lambiase, R, Montag, C, Luo, Y, Minty, M, Okamura, M, Pikin, A, Tan, Y, Tuozzolo, J, & Zhang, W. Proposed electron halo detector system as one of the beam overlap diagnostic tools for the new RHIC electron lens. United States.
Thieberger, P, Alessi, J, Beebe, E, Chasman, C, Fischer, W, Gassner, D, Gu, X, Gupta, R, Hock, J, Lambiase, R, Montag, C, Luo, Y, Minty, M, Okamura, M, Pikin, A, Tan, Y, Tuozzolo, J, and Zhang, W. 2011. "Proposed electron halo detector system as one of the beam overlap diagnostic tools for the new RHIC electron lens". United States. https://www.osti.gov/servlets/purl/1011454.
@article{osti_1011454,
title = {Proposed electron halo detector system as one of the beam overlap diagnostic tools for the new RHIC electron lens},
author = {Thieberger, P and Alessi, J and Beebe, E and Chasman, C and Fischer, W and Gassner, D and Gu, X and Gupta, R and Hock, J and Lambiase, R and Montag, C and Luo, Y and Minty, M and Okamura, M and Pikin, A and Tan, Y and Tuozzolo, J and Zhang, W},
abstractNote = {An electron lens for head-on beam-beam compensation planned for RHIC requires precise overlap of the electron and proton beams which both can have down to 0.3 mm rms transverse radial widths along the 2m long interaction region. Here we describe a new diagnostic tool that is being considered to aid in the tuning and verification of this overlap. Some of ultra relativistic protons (100 or 250 GeV) colliding with low energy electrons (2 to 10 keV) will transfer sufficient transverse momentum to cause the electrons to spiral around the magnetic guiding field in a way that will make them detectable outside of the main solenoid. Time-of-flight of the halo electron signals will provide position-sensitive information along the overlap region. Scattering cross sections are calculated and counting rate estimates are presented as function of electron energy and detector position.},
doi = {},
url = {https://www.osti.gov/biblio/1011454}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Mar 28 00:00:00 EDT 2011},
month = {Mon Mar 28 00:00:00 EDT 2011}
}

Conference:
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