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Title: Experimental measurements of rf breakdowns and deflecting gradients in mm-wave metallic accelerating structures

Abstract

We present an experimental study of a high-gradient metallic accelerating structure at sub-THz frequencies, where we investigated the physics of rf breakdowns. Wakefields in the structure were excited by an ultrarelativistic electron beam. We present the first quantitative measurements of gradients and metal vacuum rf breakdowns in sub-THz accelerating cavities. When the beam travels off axis, a deflecting field is induced in addition to the longitudinal field. We measured the deflecting forces by observing the displacement and changes in the shape of the electron bunch. This behavior can be exploited for subfemtosecond beam diagnostics.

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1250615
Alternate Identifier(s):
OSTI ID: 1255513
Report Number(s):
SLAC-PUB-16539
Journal ID: ISSN 2469-9888; PRABFM; 051302
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Journal Article: Published Article
Journal Name:
Physical Review Accelerators and Beams
Additional Journal Information:
Journal Volume: 19; Journal Issue: 5; Journal ID: ISSN 2469-9888
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; accelerators; ACCPHY

Citation Formats

Dal Forno, Massimo, Dolgashev, Valery, Bowden, Gordon, Clarke, Christine, Hogan, Mark, McCormick, Doug, Novokhatski, Alexander, Spataro, Bruno, Weathersby, Stephen, and Tantawi, Sami G. Experimental measurements of rf breakdowns and deflecting gradients in mm-wave metallic accelerating structures. United States: N. p., 2016. Web. doi:10.1103/PhysRevAccelBeams.19.051302.
Dal Forno, Massimo, Dolgashev, Valery, Bowden, Gordon, Clarke, Christine, Hogan, Mark, McCormick, Doug, Novokhatski, Alexander, Spataro, Bruno, Weathersby, Stephen, & Tantawi, Sami G. Experimental measurements of rf breakdowns and deflecting gradients in mm-wave metallic accelerating structures. United States. https://doi.org/10.1103/PhysRevAccelBeams.19.051302
Dal Forno, Massimo, Dolgashev, Valery, Bowden, Gordon, Clarke, Christine, Hogan, Mark, McCormick, Doug, Novokhatski, Alexander, Spataro, Bruno, Weathersby, Stephen, and Tantawi, Sami G. 2016. "Experimental measurements of rf breakdowns and deflecting gradients in mm-wave metallic accelerating structures". United States. https://doi.org/10.1103/PhysRevAccelBeams.19.051302.
@article{osti_1250615,
title = {Experimental measurements of rf breakdowns and deflecting gradients in mm-wave metallic accelerating structures},
author = {Dal Forno, Massimo and Dolgashev, Valery and Bowden, Gordon and Clarke, Christine and Hogan, Mark and McCormick, Doug and Novokhatski, Alexander and Spataro, Bruno and Weathersby, Stephen and Tantawi, Sami G.},
abstractNote = {We present an experimental study of a high-gradient metallic accelerating structure at sub-THz frequencies, where we investigated the physics of rf breakdowns. Wakefields in the structure were excited by an ultrarelativistic electron beam. We present the first quantitative measurements of gradients and metal vacuum rf breakdowns in sub-THz accelerating cavities. When the beam travels off axis, a deflecting field is induced in addition to the longitudinal field. We measured the deflecting forces by observing the displacement and changes in the shape of the electron bunch. This behavior can be exploited for subfemtosecond beam diagnostics.},
doi = {10.1103/PhysRevAccelBeams.19.051302},
url = {https://www.osti.gov/biblio/1250615}, journal = {Physical Review Accelerators and Beams},
issn = {2469-9888},
number = 5,
volume = 19,
place = {United States},
year = {Tue May 03 00:00:00 EDT 2016},
month = {Tue May 03 00:00:00 EDT 2016}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at https://doi.org/10.1103/PhysRevAccelBeams.19.051302

Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

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Works referenced in this record:

Progress on high-gradient structures
conference, January 2013


Geometric dependence of radio-frequency breakdown in normal conducting accelerating structures
journal, October 2010


Performance limiting effects in X -band accelerators
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Frequency and Temperature Dependence of Electrical Breakdown at 21, 30, and 39 GHz
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High-Gradient Millimeter-Wave Accelerator on a Planar Dielectric Substrate
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  • Rosenzweig, J. B.; Andonian, G.; Muggli, P.
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  • https://doi.org/10.1063/1.3520344

Temporal profile measurements of relativistic electron bunch based on wakefield generation
journal, February 2016


rf breakdown tests of mm-wave metallic accelerating structures
journal, January 2016


Field dynamics of coherent synchrotron radiation using a direct numerical solution of Maxwell’s equations
journal, June 2011


Works referencing / citing this record:

Femtosecond phase control in high-field terahertz-driven ultrafast electron sources
journal, January 2019


Femtosecond phase control in high-field terahertz-driven ultrafast electron sources
text, January 2019


Femtosecond phase control in high-field terahertz-driven ultrafast electron sources
journal, January 2019


Design of Planar Millimeter-Wave Metallic Structures for Wakefield Acceleration
journal, October 2018


Design of the Compact Linear Collider main linac accelerating structure made from two halves
journal, April 2017


Measurements of electron beam deflection and rf breakdown rate from a surface wave guided in metallic mm-wave accelerating structures
journal, September 2018


Segmented terahertz electron accelerator and manipulator (STEAM)
text, January 2018