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Title: RHIC electron lenses upgrades

Abstract

In the Relativistic Heavy Ion Collider (RHIC) 100 GeV polarized proton run in 2015, two electron lenses were used to partially compensate for the head-on beam-beam effect for the first time. Here, we describe the design of the current electron lens, detailing the hardware modifications made after the 2014 commissioning run with heavy ions. A new electron gun with 15-mm diameter cathode is characterized. The electron beam transverse profile was measured using a YAG screen and fitted with a Gaussian distribution. During operation, the overlap of the electron and proton beams was achieved using the electron backscattering detector in conjunction with an automated orbit control program.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1] more »;  [1];  [1];  [1];  [1];  [1];  [1];  [1] « less
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Collider-Accelerator Dept.
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1183853
Report Number(s):
BNL-107420-2015-CP
R&D Project: KBCH139; 18064; KB0202011; TRN: US1500220
DOE Contract Number:  
SC00112704
Resource Type:
Conference
Resource Relation:
Conference: 6th International Particle Accelerator Conference (IPAC’15), Richmond, VA (United States), 3-8 May 2015
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ELECTRON BEAMS; PROTON BEAMS; BROOKHAVEN RHIC; ELECTROMAGNETIC LENSES; GAUSS FUNCTION; GEV RANGE 10-100; ELECTRON GUNS; DESIGN; MODIFICATIONS; ORBITS; POLARIZED BEAMS; BEAM-BEAM INTERACTIONS; BEAM PROFILES

Citation Formats

Gu, X., Altinbas, Z., Bruno, D., Binello, S., Costanzo, M., Drees, A., Fischer, W., Gassner, D. M., Hock, J., Hock, K., Harvey, M., Luo, Y., Marusic, A., Mi, C., Mernick, K., Minty, M., Michnoff, R., Miller, T. A., Pikin, A. I., Robert-Demolaize, G., Samms, T., Shrey, T. C., Schoefer, V., Tan, Y., Than, R., Thieberger, P., and White, S. M. RHIC electron lenses upgrades. United States: N. p., 2015. Web.
Gu, X., Altinbas, Z., Bruno, D., Binello, S., Costanzo, M., Drees, A., Fischer, W., Gassner, D. M., Hock, J., Hock, K., Harvey, M., Luo, Y., Marusic, A., Mi, C., Mernick, K., Minty, M., Michnoff, R., Miller, T. A., Pikin, A. I., Robert-Demolaize, G., Samms, T., Shrey, T. C., Schoefer, V., Tan, Y., Than, R., Thieberger, P., & White, S. M. RHIC electron lenses upgrades. United States.
Gu, X., Altinbas, Z., Bruno, D., Binello, S., Costanzo, M., Drees, A., Fischer, W., Gassner, D. M., Hock, J., Hock, K., Harvey, M., Luo, Y., Marusic, A., Mi, C., Mernick, K., Minty, M., Michnoff, R., Miller, T. A., Pikin, A. I., Robert-Demolaize, G., Samms, T., Shrey, T. C., Schoefer, V., Tan, Y., Than, R., Thieberger, P., and White, S. M. Sun . "RHIC electron lenses upgrades". United States. https://www.osti.gov/servlets/purl/1183853.
@article{osti_1183853,
title = {RHIC electron lenses upgrades},
author = {Gu, X. and Altinbas, Z. and Bruno, D. and Binello, S. and Costanzo, M. and Drees, A. and Fischer, W. and Gassner, D. M. and Hock, J. and Hock, K. and Harvey, M. and Luo, Y. and Marusic, A. and Mi, C. and Mernick, K. and Minty, M. and Michnoff, R. and Miller, T. A. and Pikin, A. I. and Robert-Demolaize, G. and Samms, T. and Shrey, T. C. and Schoefer, V. and Tan, Y. and Than, R. and Thieberger, P. and White, S. M.},
abstractNote = {In the Relativistic Heavy Ion Collider (RHIC) 100 GeV polarized proton run in 2015, two electron lenses were used to partially compensate for the head-on beam-beam effect for the first time. Here, we describe the design of the current electron lens, detailing the hardware modifications made after the 2014 commissioning run with heavy ions. A new electron gun with 15-mm diameter cathode is characterized. The electron beam transverse profile was measured using a YAG screen and fitted with a Gaussian distribution. During operation, the overlap of the electron and proton beams was achieved using the electron backscattering detector in conjunction with an automated orbit control program.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {5}
}

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