Landau damping effects and evolutions of energy spread in small isochronous ring

Journal Article · Sat Nov 01 00:00:00 EDT 2014 · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

DOI:https://doi.org/10.1016/j.nima.2014.06.070· OSTI ID:1150701

Li, Yingjie ^[1]; Wang, Langfa ^[2]; Lin, Fanglei ^[3]

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1. Michigan State University
2. SLAC
3. JLAB

This paper presents the Landau damping effects on the microwave instability of a coasting long bunch in an isochronous ring due to finite energy spread and emittance. Our two-dimensional (2D) dispersion relation gives more accurate predictions of the microwave instability growth rates of short-wavelength perturbations than the conventional 1D formula. The long-term evolution of energy spread is also studied by measurements and simulations.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1150701
• Report Number(s): JLAB-ACP-14-1900; DOE/OR/23177-3167; NSF Grant PHY 0606007
• Journal Information: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 763; ISSN 0168-9002
• Publisher: Elsevier
• Country of Publication: United States
• Language: English