IPAC2014 - List of Authors (Mayes, C.E.)

Paper	Title	Page
MOPRO113	Beam-based HOM Measurements in Cornell's ERL Main Linac Cavity	359
	D.L. Hall, A.C. Bartnik, M.G. Billing, D. Gonnella, G.H. Hoffstaetter, M. Liepe, C.E. Mayes Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
	A search for HOMs in Cornell’s ERL main linac cavity installed in a Horizontal Test Cryomodule (HTC) has been carried out using a bunch charge modulation method, as part of the effort towards building an Energy Recovery Linac (ERL). The beam-based HOM measurements offer the significant advantage of being able to detect trapped modes invisible to both the RF pickup probes and HOM damping loads, and allow for measuring the R/Q of the modes. For each HOM detected during the search, measurements were taken to determine its nature (monopole, dipole, etc.), frequency, loaded quality factor and shunt impedance. A selection of the most notable modes found is presented, compared to 3D HOM simulations, and their potential impact on the BBU current of the future Cornell ERL is discussed.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRO113
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FRXBB01	Recent Advances in Energy Recovery Linacs
	C.E. Mayes Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
	Recently there have been important advances in Energy Recovery Linac technology. Photoemission guns can now produce high currents, low emittance and long lifetimes, and injectors have accelerated large CW currents with little emittance degradation. One challenge of high current energy recovery linacs has been the superconducting RF linacs, which require very high quality factors in order to limit power consumption. Recently, cavities in cryomodules with the needed performance have been demonstrated. Together, these advances open the door to new applications for energy recovery linacs, from colliders to light sources. This talk reviews progress in ERLs around the world.
	Slides FRXBB01 [22.823 MB]
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Paper

Title

Page

Beam-based HOM Measurements in Cornell's ERL Main Linac Cavity

359

D.L. Hall, A.C. Bartnik, M.G. Billing, D. Gonnella, G.H. Hoffstaetter, M. Liepe, C.E. Mayes
Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA

A search for HOMs in Cornell’s ERL main linac cavity installed in a Horizontal Test Cryomodule (HTC) has been carried out using a bunch charge modulation method, as part of the effort towards building an Energy Recovery Linac (ERL). The beam-based HOM measurements offer the significant advantage of being able to detect trapped modes invisible to both the RF pickup probes and HOM damping loads, and allow for measuring the R/Q of the modes. For each HOM detected during the search, measurements were taken to determine its nature (monopole, dipole, etc.), frequency, loaded quality factor and shunt impedance. A selection of the most notable modes found is presented, compared to 3D HOM simulations, and their potential impact on the BBU current of the future Cornell ERL is discussed.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRO113

Export •

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

FRXBB01

Recent Advances in Energy Recovery Linacs

C.E. Mayes
Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA

Recently there have been important advances in Energy Recovery Linac technology. Photoemission guns can now produce high currents, low emittance and long lifetimes, and injectors have accelerated large CW currents with little emittance degradation. One challenge of high current energy recovery linacs has been the superconducting RF linacs, which require very high quality factors in order to limit power consumption. Recently, cavities in cryomodules with the needed performance have been demonstrated. Together, these advances open the door to new applications for energy recovery linacs, from colliders to light sources. This talk reviews progress in ERLs around the world.

Slides FRXBB01 [22.823 MB]

Export •

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