Conceptual design of a high real-estate gradient cavity for a SRF ERL
Abstract
The term “real-estate gradient” is used to describe the energy gain provided by an accelerating structure per actual length it takes in the accelerator. given that the length of the tunnel available for the accelerator is constrained, the real-estate gradient is an important measure of the efficiency of a given accelerator structure. When designing an accelerating cavity to be efficient in this sense, the unwanted Higher Order Mode (HOM) fields should be reduced by suitable HOM dampers. This is a particularly important consideration for high current operation. The additional RF components might take longitude space and reduce the total accelerating efficiency. We describe a new high efficiency 5-cell cavity with the dampers included. The total length of the cavity is reduced by 13% as compared to a more conventional design without compromising the cavity fundamental-mode performance. In addition, the HOM impedance is reduced for a higher Beam-Break-Up (BBU) threshold of operating current. In this article, we consider an example, a possible application at the eRHIC Energy Recovery Linac (ERL).
- Authors:
-
- Brookhaven National Lab. (BNL), Upton, NY (United States). Collider-Accelerator Dept.; Stony Brook Univ., NY (United States). Dept. of Physics and Astronomy
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1376165
- Alternate Identifier(s):
- OSTI ID: 1549648
- Report Number(s):
- BNL-114137-2017-JA
Journal ID: ISSN 0168-9002; TRN: US1702566
- Grant/Contract Number:
- SC0012704; AC02-98CH10886
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
- Additional Journal Information:
- Journal Volume: 869; Journal Issue: C; Journal ID: ISSN 0168-9002
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 43 PARTICLE ACCELERATORS; High current; Gradient; Superconducting; Energy recovery; Cavity higher order modes; Beam beak up
Citation Formats
Xu, Chen, Ben-Zvi, Ilan, Hao, Yue, Xin, Tianmu, and Wang, Haipeng. Conceptual design of a high real-estate gradient cavity for a SRF ERL. United States: N. p., 2017.
Web. doi:10.1016/j.nima.2017.07.011.
Xu, Chen, Ben-Zvi, Ilan, Hao, Yue, Xin, Tianmu, & Wang, Haipeng. Conceptual design of a high real-estate gradient cavity for a SRF ERL. United States. https://doi.org/10.1016/j.nima.2017.07.011
Xu, Chen, Ben-Zvi, Ilan, Hao, Yue, Xin, Tianmu, and Wang, Haipeng. Wed .
"Conceptual design of a high real-estate gradient cavity for a SRF ERL". United States. https://doi.org/10.1016/j.nima.2017.07.011. https://www.osti.gov/servlets/purl/1376165.
@article{osti_1376165,
title = {Conceptual design of a high real-estate gradient cavity for a SRF ERL},
author = {Xu, Chen and Ben-Zvi, Ilan and Hao, Yue and Xin, Tianmu and Wang, Haipeng},
abstractNote = {The term “real-estate gradient” is used to describe the energy gain provided by an accelerating structure per actual length it takes in the accelerator. given that the length of the tunnel available for the accelerator is constrained, the real-estate gradient is an important measure of the efficiency of a given accelerator structure. When designing an accelerating cavity to be efficient in this sense, the unwanted Higher Order Mode (HOM) fields should be reduced by suitable HOM dampers. This is a particularly important consideration for high current operation. The additional RF components might take longitude space and reduce the total accelerating efficiency. We describe a new high efficiency 5-cell cavity with the dampers included. The total length of the cavity is reduced by 13% as compared to a more conventional design without compromising the cavity fundamental-mode performance. In addition, the HOM impedance is reduced for a higher Beam-Break-Up (BBU) threshold of operating current. In this article, we consider an example, a possible application at the eRHIC Energy Recovery Linac (ERL).},
doi = {10.1016/j.nima.2017.07.011},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = C,
volume = 869,
place = {United States},
year = {Wed Jul 19 00:00:00 EDT 2017},
month = {Wed Jul 19 00:00:00 EDT 2017}
}
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