High Average Current Effects in Energy Recovery Linacs

Conference · Fri Jun 01 04:00:00 EDT 2001

DOI:https://doi.org/10.1109/PAC.2001.987462· OSTI ID:783624

Merminga, L; Campisi, I E; Douglas, D; Krafft, G; Preble, J; Yunn, B

Energy Recovery Linacs (ERLs) can be used as high efficiency driver accelerators for Free Electron Lasers, synchrotron radiation light sources and colliders. Energy recovery has been successfully demonstrated up to 5 mA of average current in the Jefferson Lab 1.7 kW IRFEL. Future designs call for much higher average currents of order 100 mA. A number of phenomena can potentially limit the performance of ERLs at these high currents. These effects include single and multibunch Beam Breakup, Higher Order Mode power deposition, RF control issues, possible instabilities that can arise from beam loss or non-zero momentum compaction in the recirculation arc, and beam loss itself. We review these effects, present experimental data obtained at the Jefferson Lab FEL, compare with analytical calculations and simulations and extrapolate the performance of ERLs to average currents up to approximately 100 mA.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (US)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 783624
• Report Number(s): JLAB-ACP-01-02; DOE/ER/40150-1876
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM BUNCHING
BEAM CURRENTS
ENERGY LOSSES
ENERGY RECOVERY
FREE ELECTRON LASERS
INSTABILITY
LIGHT SOURCES
LINEAR ACCELERATORS
LINEAR COLLIDERS
PERFORMANCE
SYNCHROTRON RADIATION