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Title: Demonstration of electron cooling using a pulsed beam from an electrostatic electron cooler

Abstract

Cooling of hadron beams is critically important in the next generation of hadron storage rings for delivery of unprecedented performance. One such application is the electron-ion collider presently under development in the US. The desire to develop electron coolers for operation at much higher energies than previously achieved necessitates the use of radio-frequency (rf) fields for acceleration as opposed to the conventional, electrostatic approach. While electron cooling is a mature technology at low energy utilizing a dc beam, rf acceleration requires the cooling beam to be bunched, thus extending the parameter space to an unexplored territory. It is important to experimentally demonstrate the feasibility of cooling with electron bunches and further investigate how the relative time structure of the two beams affects the cooling properties; thus, a set of four pulsed-beam cooling experiments was carried out by a collaboration of Jefferson Lab and Institute of Modern Physics (IMP). The experiments have successfully demonstrated cooling with a beam of electron bunches in both the longitudinal and transverse directions for the first time. We have measured the effect of the electron bunch length and longitudinal ion focusing strength on the temporal evolution of the longitudinal and transverse ion beam profile and demonstratemore » that if the synchronization can be accurately maintained, the dynamics are not adversely affected by the change in time structure.« less

Authors:
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Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP); Chinese Academy of Sciences (CAS); National Natural Science Foundation of China (NSFC)
OSTI Identifier:
1755982
Alternate Identifier(s):
OSTI ID: 1756027
Report Number(s):
JLAB-ACP-20-3224; DOE/OR/23177-5003; arXiv: 2010.15791
Journal ID: ISSN 2469-9888; PRABCJ; 012801
Grant/Contract Number:  
AC05-06OR23177; 113462KYSB20170051; 11575264
Resource Type:
Published Article
Journal Name:
Physical Review Accelerators and Beams
Additional Journal Information:
Journal Name: Physical Review Accelerators and Beams Journal Volume: 24 Journal Issue: 1; Journal ID: ISSN 2469-9888
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; Beam cooling

Citation Formats

Bruker, M. W., Benson, S., Hutton, A., Jordan, K., Powers, T., Rimmer, R., Satogata, T., Sy, A., Wang, H., Wang, S., Zhang, H., Zhang, Y., Ma, F., Li, J., Ma, X. M., Mao, L. J., Sha, X. P., Tang, M. T., Yang, J. C., Yang, X. D., Zhao, H., and Zhao, H. W.. Demonstration of electron cooling using a pulsed beam from an electrostatic electron cooler. United States: N. p., 2021. Web. https://doi.org/10.1103/PhysRevAccelBeams.24.012801.
Bruker, M. W., Benson, S., Hutton, A., Jordan, K., Powers, T., Rimmer, R., Satogata, T., Sy, A., Wang, H., Wang, S., Zhang, H., Zhang, Y., Ma, F., Li, J., Ma, X. M., Mao, L. J., Sha, X. P., Tang, M. T., Yang, J. C., Yang, X. D., Zhao, H., & Zhao, H. W.. Demonstration of electron cooling using a pulsed beam from an electrostatic electron cooler. United States. https://doi.org/10.1103/PhysRevAccelBeams.24.012801
Bruker, M. W., Benson, S., Hutton, A., Jordan, K., Powers, T., Rimmer, R., Satogata, T., Sy, A., Wang, H., Wang, S., Zhang, H., Zhang, Y., Ma, F., Li, J., Ma, X. M., Mao, L. J., Sha, X. P., Tang, M. T., Yang, J. C., Yang, X. D., Zhao, H., and Zhao, H. W.. Wed . "Demonstration of electron cooling using a pulsed beam from an electrostatic electron cooler". United States. https://doi.org/10.1103/PhysRevAccelBeams.24.012801.
@article{osti_1755982,
title = {Demonstration of electron cooling using a pulsed beam from an electrostatic electron cooler},
author = {Bruker, M. W. and Benson, S. and Hutton, A. and Jordan, K. and Powers, T. and Rimmer, R. and Satogata, T. and Sy, A. and Wang, H. and Wang, S. and Zhang, H. and Zhang, Y. and Ma, F. and Li, J. and Ma, X. M. and Mao, L. J. and Sha, X. P. and Tang, M. T. and Yang, J. C. and Yang, X. D. and Zhao, H. and Zhao, H. W.},
abstractNote = {Cooling of hadron beams is critically important in the next generation of hadron storage rings for delivery of unprecedented performance. One such application is the electron-ion collider presently under development in the US. The desire to develop electron coolers for operation at much higher energies than previously achieved necessitates the use of radio-frequency (rf) fields for acceleration as opposed to the conventional, electrostatic approach. While electron cooling is a mature technology at low energy utilizing a dc beam, rf acceleration requires the cooling beam to be bunched, thus extending the parameter space to an unexplored territory. It is important to experimentally demonstrate the feasibility of cooling with electron bunches and further investigate how the relative time structure of the two beams affects the cooling properties; thus, a set of four pulsed-beam cooling experiments was carried out by a collaboration of Jefferson Lab and Institute of Modern Physics (IMP). The experiments have successfully demonstrated cooling with a beam of electron bunches in both the longitudinal and transverse directions for the first time. We have measured the effect of the electron bunch length and longitudinal ion focusing strength on the temporal evolution of the longitudinal and transverse ion beam profile and demonstrate that if the synchronization can be accurately maintained, the dynamics are not adversely affected by the change in time structure.},
doi = {10.1103/PhysRevAccelBeams.24.012801},
journal = {Physical Review Accelerators and Beams},
number = 1,
volume = 24,
place = {United States},
year = {2021},
month = {1}
}

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Works referenced in this record:

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