Accurate setting of electron energy for demonstration of first hadron beam cooling with rf-accelerated electron bunches
Abstract
The world’s first electron cooling based on the rf acceleration of electron bunches was experimentally demonstrated at the Low Energy RHIC Electron Cooler (LEReC) at Brookhaven National Laboratory. The critical step in obtaining cooling of the Au ions in the collider with this new approach was matching the electron and ion relativistic γ-factors with a relative error of less than 5 × 10–4. Since the electron beam kinetic energy was just 1.6 MeV, it was required to set the absolute energy of electrons with an accuracy better than 0.8 keV. The method of setting electron energy in conventional coolers was unsuitable for LEReC and a new technique had to be developed. In this paper we describe our experience with measuring the electron beam energy at LEReC and precisely matching electron and ion γ-factors, which resulted in demonstration of the cooling.
- Authors:
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1575964
- Alternate Identifier(s):
- OSTI ID: 1579900
- Report Number(s):
- BNL-212419-2019-JAAM
Journal ID: ISSN 2469-9888; PRABCJ; 111004
- Grant/Contract Number:
- SC0012704
- Resource Type:
- Published Article
- Journal Name:
- Physical Review Accelerators and Beams
- Additional Journal Information:
- Journal Name: Physical Review Accelerators and Beams Journal Volume: 22 Journal Issue: 11; Journal ID: ISSN 2469-9888
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 43 PARTICLE ACCELERATORS
Citation Formats
Seletskiy, S., Blaskiewicz, M., Drees, A., Fedotov, A., Fischer, W., Gassner, D. M., Gu, X., Hulsart, R., Kayran, D., Kewisch, J., Liu, C., Mernick, K., Michnoff, R., Miller, T., Minty, M., Robert-Demolaize, G., Schoefer, V., Song, H., Thieberger, P., and Wanderer, P. Accurate setting of electron energy for demonstration of first hadron beam cooling with rf-accelerated electron bunches. United States: N. p., 2019.
Web. doi:10.1103/PhysRevAccelBeams.22.111004.
Seletskiy, S., Blaskiewicz, M., Drees, A., Fedotov, A., Fischer, W., Gassner, D. M., Gu, X., Hulsart, R., Kayran, D., Kewisch, J., Liu, C., Mernick, K., Michnoff, R., Miller, T., Minty, M., Robert-Demolaize, G., Schoefer, V., Song, H., Thieberger, P., & Wanderer, P. Accurate setting of electron energy for demonstration of first hadron beam cooling with rf-accelerated electron bunches. United States. https://doi.org/10.1103/PhysRevAccelBeams.22.111004
Seletskiy, S., Blaskiewicz, M., Drees, A., Fedotov, A., Fischer, W., Gassner, D. M., Gu, X., Hulsart, R., Kayran, D., Kewisch, J., Liu, C., Mernick, K., Michnoff, R., Miller, T., Minty, M., Robert-Demolaize, G., Schoefer, V., Song, H., Thieberger, P., and Wanderer, P. Wed .
"Accurate setting of electron energy for demonstration of first hadron beam cooling with rf-accelerated electron bunches". United States. https://doi.org/10.1103/PhysRevAccelBeams.22.111004.
@article{osti_1575964,
title = {Accurate setting of electron energy for demonstration of first hadron beam cooling with rf-accelerated electron bunches},
author = {Seletskiy, S. and Blaskiewicz, M. and Drees, A. and Fedotov, A. and Fischer, W. and Gassner, D. M. and Gu, X. and Hulsart, R. and Kayran, D. and Kewisch, J. and Liu, C. and Mernick, K. and Michnoff, R. and Miller, T. and Minty, M. and Robert-Demolaize, G. and Schoefer, V. and Song, H. and Thieberger, P. and Wanderer, P.},
abstractNote = {The world’s first electron cooling based on the rf acceleration of electron bunches was experimentally demonstrated at the Low Energy RHIC Electron Cooler (LEReC) at Brookhaven National Laboratory. The critical step in obtaining cooling of the Au ions in the collider with this new approach was matching the electron and ion relativistic γ-factors with a relative error of less than 5 × 10–4. Since the electron beam kinetic energy was just 1.6 MeV, it was required to set the absolute energy of electrons with an accuracy better than 0.8 keV. The method of setting electron energy in conventional coolers was unsuitable for LEReC and a new technique had to be developed. In this paper we describe our experience with measuring the electron beam energy at LEReC and precisely matching electron and ion γ-factors, which resulted in demonstration of the cooling.},
doi = {10.1103/PhysRevAccelBeams.22.111004},
journal = {Physical Review Accelerators and Beams},
number = 11,
volume = 22,
place = {United States},
year = {Wed Nov 27 00:00:00 EST 2019},
month = {Wed Nov 27 00:00:00 EST 2019}
}
https://doi.org/10.1103/PhysRevAccelBeams.22.111004
Web of Science
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