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Title: Design and test of 704 MHz and 2.1 GHz normal conducting cavities for low energy RHIC electron cooler

Abstract

Here, the low energy RHIC electron cooler (LEReC) is currently under commissioning at BNL to improve RHIC luminosity for heavy ion beam energies below 10 GeV/nucleon. The linac of LEReC consists of a dc photoemission gun, one 704 MHz superconducting radio frequency booster cavity, and three normal conducting cavities. It is designed to deliver a 1.6–2.6 MeV electron beam, with peak-to-peak momentum spread dp/p of less than ±7 × 10 –4. Two of the three normal conducting cavities will be used in LEReC for energy spread correction: a single-cell 704 MHz cavity for energy dechirping and a three-cell 2.1 GHz third harmonic cavity for rf curvature correction. In this paper, we present the designs and rf test results of these two cavities.

Authors:
 [1];  [2];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [3]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  3. Cornell Univ., Ithaca, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1497933
Alternate Identifier(s):
OSTI ID: 1498283; OSTI ID: 1508347
Report Number(s):
BNL-211320-2019-JAAM; arXiv:1804.02007; FERMILAB-PUB-18-756-TD
Journal ID: ISSN 2469-9888; PRABCJ
Grant/Contract Number:  
SC0012704; AC02-98CH10886; AC02-05CH11231; AC02-07CH11359
Resource Type:
Published Article
Journal Name:
Physical Review Accelerators and Beams
Additional Journal Information:
Journal Volume: 22; Journal Issue: 3; Journal ID: ISSN 2469-9888
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Xiao, Binping, Belomestnykh, S., Brennan, J. M., Brutus, J. C., McIntyre, G., Mernick, K., Pai, C., Smith, K., Xin, T., Zaltsman, A., and Veshcherevich, V. Design and test of 704 MHz and 2.1 GHz normal conducting cavities for low energy RHIC electron cooler. United States: N. p., 2019. Web. doi:10.1103/PhysRevAccelBeams.22.030101.
Xiao, Binping, Belomestnykh, S., Brennan, J. M., Brutus, J. C., McIntyre, G., Mernick, K., Pai, C., Smith, K., Xin, T., Zaltsman, A., & Veshcherevich, V. Design and test of 704 MHz and 2.1 GHz normal conducting cavities for low energy RHIC electron cooler. United States. doi:10.1103/PhysRevAccelBeams.22.030101.
Xiao, Binping, Belomestnykh, S., Brennan, J. M., Brutus, J. C., McIntyre, G., Mernick, K., Pai, C., Smith, K., Xin, T., Zaltsman, A., and Veshcherevich, V. Tue . "Design and test of 704 MHz and 2.1 GHz normal conducting cavities for low energy RHIC electron cooler". United States. doi:10.1103/PhysRevAccelBeams.22.030101.
@article{osti_1497933,
title = {Design and test of 704 MHz and 2.1 GHz normal conducting cavities for low energy RHIC electron cooler},
author = {Xiao, Binping and Belomestnykh, S. and Brennan, J. M. and Brutus, J. C. and McIntyre, G. and Mernick, K. and Pai, C. and Smith, K. and Xin, T. and Zaltsman, A. and Veshcherevich, V.},
abstractNote = {Here, the low energy RHIC electron cooler (LEReC) is currently under commissioning at BNL to improve RHIC luminosity for heavy ion beam energies below 10 GeV/nucleon. The linac of LEReC consists of a dc photoemission gun, one 704 MHz superconducting radio frequency booster cavity, and three normal conducting cavities. It is designed to deliver a 1.6–2.6 MeV electron beam, with peak-to-peak momentum spread dp/p of less than ±7 × 10–4. Two of the three normal conducting cavities will be used in LEReC for energy spread correction: a single-cell 704 MHz cavity for energy dechirping and a three-cell 2.1 GHz third harmonic cavity for rf curvature correction. In this paper, we present the designs and rf test results of these two cavities.},
doi = {10.1103/PhysRevAccelBeams.22.030101},
journal = {Physical Review Accelerators and Beams},
number = 3,
volume = 22,
place = {United States},
year = {2019},
month = {3}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevAccelBeams.22.030101

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