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Title: Beam energy scan with asymmetric collision at RHIC

Authors:
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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:
1361246
Report Number(s):
BNL-113321-2017-CP
R&D Project: KBCH139; 18035; KB0202011
DOE Contract Number:
SC00112704
Resource Type:
Conference
Resource Relation:
Conference: 8th International Particle Accelerator Conference (IPAC17); Bella Center, Copenhagen, Denmark; 20170514 through 20170519
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Liu C., Alessi, J., Beebe, E., Blaskiewicz, M., Brennan, J. M. Brown, K. A., Bruno, D., Butler, J., Connolly, R., DOttavio, T., Drees, K. A., Fischer, W., Gardner, C. J., Gassner, D. M., Gu, X., Hao, Y., Harvey, M., Hayes, T., Huang, H., Hulsart, R., Ingrassia, P., Jamilkowski, J., Laster, J. S., Litvinenko, V., Luo, Y., Mapes, M., Marr, G. J., Marusic, A., McIntyre, G., Mernick, K., Michnoff, R., Minty, M., Montag, C., Morris, J., Naylor, C., Nemesure, S., Pinayev, I., Ranjbar, V., Raparia, D., Robert-Demolaize, G., Roser, T., Sampson, P. W., Sandberg, J., Schoefer, V., Severino, F., Shrey, T., Smith, K., Tepikan, S., Than, Y., Thieberger, P., Tuozzolo, J., Wang, G., Wu, Q., Zaltsman, A., Zeno, K., Zhang, S., and Zhang, W. Beam energy scan with asymmetric collision at RHIC. United States: N. p., 2017. Web.
Liu C., Alessi, J., Beebe, E., Blaskiewicz, M., Brennan, J. M. Brown, K. A., Bruno, D., Butler, J., Connolly, R., DOttavio, T., Drees, K. A., Fischer, W., Gardner, C. J., Gassner, D. M., Gu, X., Hao, Y., Harvey, M., Hayes, T., Huang, H., Hulsart, R., Ingrassia, P., Jamilkowski, J., Laster, J. S., Litvinenko, V., Luo, Y., Mapes, M., Marr, G. J., Marusic, A., McIntyre, G., Mernick, K., Michnoff, R., Minty, M., Montag, C., Morris, J., Naylor, C., Nemesure, S., Pinayev, I., Ranjbar, V., Raparia, D., Robert-Demolaize, G., Roser, T., Sampson, P. W., Sandberg, J., Schoefer, V., Severino, F., Shrey, T., Smith, K., Tepikan, S., Than, Y., Thieberger, P., Tuozzolo, J., Wang, G., Wu, Q., Zaltsman, A., Zeno, K., Zhang, S., & Zhang, W. Beam energy scan with asymmetric collision at RHIC. United States.
Liu C., Alessi, J., Beebe, E., Blaskiewicz, M., Brennan, J. M. Brown, K. A., Bruno, D., Butler, J., Connolly, R., DOttavio, T., Drees, K. A., Fischer, W., Gardner, C. J., Gassner, D. M., Gu, X., Hao, Y., Harvey, M., Hayes, T., Huang, H., Hulsart, R., Ingrassia, P., Jamilkowski, J., Laster, J. S., Litvinenko, V., Luo, Y., Mapes, M., Marr, G. J., Marusic, A., McIntyre, G., Mernick, K., Michnoff, R., Minty, M., Montag, C., Morris, J., Naylor, C., Nemesure, S., Pinayev, I., Ranjbar, V., Raparia, D., Robert-Demolaize, G., Roser, T., Sampson, P. W., Sandberg, J., Schoefer, V., Severino, F., Shrey, T., Smith, K., Tepikan, S., Than, Y., Thieberger, P., Tuozzolo, J., Wang, G., Wu, Q., Zaltsman, A., Zeno, K., Zhang, S., and Zhang, W. Sun . "Beam energy scan with asymmetric collision at RHIC". United States. doi:. https://www.osti.gov/servlets/purl/1361246.
@article{osti_1361246,
title = {Beam energy scan with asymmetric collision at RHIC},
author = {Liu C. and Alessi, J. and Beebe, E. and Blaskiewicz, M. and Brennan, J. M. Brown, K. A. and Bruno, D. and Butler, J. and Connolly, R. and DOttavio, T. and Drees, K. A. and Fischer, W. and Gardner, C. J. and Gassner, D. M. and Gu, X. and Hao, Y. and Harvey, M. and Hayes, T. and Huang, H. and Hulsart, R. and Ingrassia, P. and Jamilkowski, J. and Laster, J. S. and Litvinenko, V. and Luo, Y. and Mapes, M. and Marr, G. J. and Marusic, A. and McIntyre, G. and Mernick, K. and Michnoff, R. and Minty, M. and Montag, C. and Morris, J. and Naylor, C. and Nemesure, S. and Pinayev, I. and Ranjbar, V. and Raparia, D. and Robert-Demolaize, G. and Roser, T. and Sampson, P. W. and Sandberg, J. and Schoefer, V. and Severino, F. and Shrey, T. and Smith, K. and Tepikan, S. and Than, Y. and Thieberger, P. and Tuozzolo, J. and Wang, G. and Wu, Q. and Zaltsman, A. and Zeno, K. and Zhang, S. and Zhang, W.},
abstractNote = {},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun May 14 00:00:00 EDT 2017},
month = {Sun May 14 00:00:00 EDT 2017}
}

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  • A beam energy scan of deuteron-gold collision, with center-of-mass energy at 19.6, 39, 62.4 and 200.7 GeV/n, was performed at the Relativistic Heavy Ion Collider in 2016 to study the threshold for quark-gluon plasma (QGP) production. The lattice, RF, stochastic cooling and other subsystems were in different configurations for the various energies. The operational challenges changed with every new energy. The operational experience at each energy, the operation performance, highlights and lessons of the beam energy scan are reviewed in this report.
  • After providing collisions of polarized protons at a beam energy of 100 GeV since 2001, the Relativistic Heavy Ion Collider (RHIC) at BNL had its first opportunity to collide polarized protons at its maximum beam energy of 250 GeV in the 2009 polarized proton operations. Equipped with two full Siberian snakes [1] in each ring, RHIC preserves polarization during acceleration from injection to 100 GeV with precise control of the betatron tunes and vertical orbit distortions. However, the strong intrinsic spin resonances beyond 100 GeV are more than two times stronger than those below 100 GeV, requiring much tighter tolerancesmore » on vertical orbit distortions and betatron tunes. With the currently achieved orbit correction and tune control, average polarizations of {approx_equal} 42% at top energy and average polarizations of {approx_equal} 55% at injection energy were achieved. Polarization measurements as a function of beam energy also indicated aU polarization losses occurred around three strong intrinsic resonances at 136 GeV, 199.3 GeV and 220.8 GeV Peak luminosity of 122 x 10{sup 30} cm{sup -2} s{sup -1} was also demonstrated. This paper presents the performance of the first RHIC 250 GeV operation and discusses the depolarization issues encountered during the run.« less
  • No abstract prepared.