ERL2015 - List of Authors (Wang, S.)

Paper	Title	Page
WEICLH2063	Ultra-Fast Harmonic Resonant Kicker Design for the MEIC Electron Circular Cooler Ring	75
	Y.L. Huang IMP/CAS, Lanzhou, People's Republic of China J. Guo, R.A. Rimmer, H. Wang, S. Wang JLab, Newport News, Virginia, USA
	Electron cooling is essential for the proposed Medium energy Electron Ion Collider (MEIC) to attain low emittance and high luminosity. To achieve a very high electron beam current for bunched beam cooling in the future high luminosity upgrade, we adopt a circulator ring to reuse the electron bunches. The electron bunches will recirculate for 25 turns, thus the current in the ERL can be reduced by a factor of 25. An ultra-fast kicker is required for this circulator ring, with pulse width less than 2.1 ns and high repetition frequency. JLab started an LDRD proposal to develop such a kicker. Our approach is to generate a series harmonic mode with RF resonant cavities, thus every 25th bunch will be kicked while all the other bunches un-kicked. Here we present a design of a simplified prototype with every 10th bunch kicked, using 4 cavities to generate 10 harmonic modes. Cavity structure is optimized to get the highest shunt impedance, thus the total power dissipated on 4 cavities for copper material is only 87.72 W, two to three orders of magnitude lower than a strip-line kicker.
	Slides WEICLH2063 [2.600 MB]
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Paper

Title

Page

WEICLH2063

Ultra-Fast Harmonic Resonant Kicker Design for the MEIC Electron Circular Cooler Ring

75

Y.L. Huang
IMP/CAS, Lanzhou, People's Republic of China
J. Guo, R.A. Rimmer, H. Wang, S. Wang
JLab, Newport News, Virginia, USA

Electron cooling is essential for the proposed Medium energy Electron Ion Collider (MEIC) to attain low emittance and high luminosity. To achieve a very high electron beam current for bunched beam cooling in the future high luminosity upgrade, we adopt a circulator ring to reuse the electron bunches. The electron bunches will recirculate for 25 turns, thus the current in the ERL can be reduced by a factor of 25. An ultra-fast kicker is required for this circulator ring, with pulse width less than 2.1 ns and high repetition frequency. JLab started an LDRD proposal to develop such a kicker. Our approach is to generate a series harmonic mode with RF resonant cavities, thus every 25th bunch will be kicked while all the other bunches un-kicked. Here we present a design of a simplified prototype with every 10th bunch kicked, using 4 cavities to generate 10 harmonic modes. Cavity structure is optimized to get the highest shunt impedance, thus the total power dissipated on 4 cavities for copper material is only 87.72 W, two to three orders of magnitude lower than a strip-line kicker.

Slides WEICLH2063 [2.600 MB]

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)