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Title: Observations of Long-Range and Short-Range Wakefield Effects on Electron-Beam Dynamics in TESLA-Type Superconducting RF

Abstract

The assessments of long-range and short-range wakefield effects in TESLA-type superconducting rf cavities at the Fermilab Accelerator Science and Technology (FAST) Facility are described. A dipolar higher-order mode (HOM) of one cavity is shown to be in near resonance with the 3-MHz micropulse repetition frequency harmonic resulting in a clear sub-macropulse centroid oscillation of 100 kHz. In the short-range wakefield measurements, a head-tail transverse kick of ~100 µm is seen in the streak camera images with 500 pC/b and offsets of ~2 mm. A numerical model for the TESLA-type cavity is consistent with these latter results.

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. Fermilab
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1573823
Report Number(s):
FERMILAB-CONF-19-466-AD
oai:inspirehep.net:1763518
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Conference
Resource Relation:
Conference: 8th International Beam Instrumentation Conference, Malmo, Sweden, 09/08-09/12/2019
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Lumpkin, A. H., Thurman-Keup, R., Eddy, N., Edstrom, D., and Ruan, J. Observations of Long-Range and Short-Range Wakefield Effects on Electron-Beam Dynamics in TESLA-Type Superconducting RF. United States: N. p., 2019. Web.
Lumpkin, A. H., Thurman-Keup, R., Eddy, N., Edstrom, D., & Ruan, J. Observations of Long-Range and Short-Range Wakefield Effects on Electron-Beam Dynamics in TESLA-Type Superconducting RF. United States.
Lumpkin, A. H., Thurman-Keup, R., Eddy, N., Edstrom, D., and Ruan, J. Tue . "Observations of Long-Range and Short-Range Wakefield Effects on Electron-Beam Dynamics in TESLA-Type Superconducting RF". United States. https://www.osti.gov/servlets/purl/1573823.
@article{osti_1573823,
title = {Observations of Long-Range and Short-Range Wakefield Effects on Electron-Beam Dynamics in TESLA-Type Superconducting RF},
author = {Lumpkin, A. H. and Thurman-Keup, R. and Eddy, N. and Edstrom, D. and Ruan, J.},
abstractNote = {The assessments of long-range and short-range wakefield effects in TESLA-type superconducting rf cavities at the Fermilab Accelerator Science and Technology (FAST) Facility are described. A dipolar higher-order mode (HOM) of one cavity is shown to be in near resonance with the 3-MHz micropulse repetition frequency harmonic resulting in a clear sub-macropulse centroid oscillation of 100 kHz. In the short-range wakefield measurements, a head-tail transverse kick of ~100 µm is seen in the streak camera images with 500 pC/b and offsets of ~2 mm. A numerical model for the TESLA-type cavity is consistent with these latter results.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {1}
}

Conference:
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