Higher order mode damper for low energy RHIC electron cooler superconducting radio frequency booster cavity
To improve RHIC luminosity for heavy ion beam energies below 10GeV/nucleon, the Low Energy RHIC electron Cooler (LEReC) is currently under commissioning at BNL. The Linac of LEReC is designed to deliver a 1.6MeV to 2.6MeV electron beam, with rms dp/p less than 5e-4.A 704 MHz superconducting radio frequency (SRF) booster cavity in this Linac provides up to 2.2 MeV accelerating voltage.With such a low energy and very demanding energy spread requirement,control of Higher Order Modes (HOMs) in the cavities becomes critical and needs to be carefully evaluated to ensure minimum impact on the beam. In this study, we report the multiphysics design of the HOM damper for this cavity to meet the energy spread requirement, as well as experimental results of the cavity with and without the HOM damper.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Contributing Organization:
- National Energy Research Scientific Computing Center (NERSC)
- Grant/Contract Number:
- AC02-98CH10886; AC02-05CH11231; SC0012704
- OSTI ID:
- 1512350
- Alternate ID(s):
- OSTI ID: 1508746; OSTI ID: 1542622
- Report Number(s):
- BNL-211577-2019-JAAM; PRABCJ; 050101
- Journal Information:
- Physical Review Accelerators and Beams, Journal Name: Physical Review Accelerators and Beams Vol. 22 Journal Issue: 5; ISSN 2469-9888
- Publisher:
- American Physical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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