skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Ultra-High Gradient Dielectric Wakefield Accelerator Experiments

Abstract

Ultra-high gradient dielectric wakefield accelerators are a potential option for a linear collider afterburner since they are immune to the ion collapse and electron/positron asymmetry problems implicit in a plasma based afterburner. The first phase of an experiment to study the performance of dielectric Cerenkov wakefield accelerating structures at extremely high gradients in the GV/m range has been completed. The experiment took advantage of the unique SLAC FFTB electron beam and its ultra-short pulse lengths and high currents (e.g., {sigma}{sub z} = 20 {micro}m at Q = 3 nC). The FFTB electron beam was successfully focused down and sent through short lengths of fused silica capillary tubing (ID = 200 {micro}m/OD = 325 {micro}m). The pulse length of the electron beam was varied to produce a range of electric fields between 2 and 20 GV/m at the inner surface of the dielectric tubes. We observed a sharp increase in optical emissions from the capillaries in the middle part of this surface field range which we believe indicates the transition between sustainable field levels and breakdown. If this initial interpretation is correct, the surfaced fields that were sustained equate to on axis accelerating field of several GV/m. In future experiments beingmore » developed for the SLAC SABER and BNL ATF we plan to use the coherent Cerenkov radiation emitted from the capillary tube as a field strength diagnostic and demonstrate GV/m range particle energy gain.« less

Authors:
; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Stanford Linear Accelerator Center (SLAC)
Sponsoring Org.:
USDOE
OSTI Identifier:
901585
Report Number(s):
SLAC-PUB-12420
TRN: US0702599
DOE Contract Number:  
AC02-76SF00515
Resource Type:
Conference
Resource Relation:
Journal Name: AIP Conf.Proc.877:903-909,2006; Conference: Prepared for 12th Advanced Accelerator Concepts Workshop (AAC 2006), Lake Geneva, Wisconsin, 10-15 Jul 2006
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 36 MATERIALS SCIENCE; ACCELERATORS; AFTERBURNERS; ASYMMETRY; BREAKDOWN; CAPILLARIES; DIELECTRIC MATERIALS; ELECTRIC FIELDS; ELECTRON BEAMS; LINEAR COLLIDERS; PERFORMANCE; RADIATIONS; SILICA; STANFORD LINEAR ACCELERATOR CENTER; WAKEFIELD ACCELERATORS; Accelerators,ACCPHY

Citation Formats

Thompson, M.C., Badakov, H., Rosenzweig, J.B., Travish, G., Hogan, M., Ischebeck, R., Kirby, N., Siemann, R., Walz, D., Muggli, P., Scott, A., Yoder, R., and /LLNL, Livermore /UCLA /SLAC /Southern California U. /UC, Santa Barbara /Manhattan Coll., Riverdale. Ultra-High Gradient Dielectric Wakefield Accelerator Experiments. United States: N. p., 2007. Web.
Thompson, M.C., Badakov, H., Rosenzweig, J.B., Travish, G., Hogan, M., Ischebeck, R., Kirby, N., Siemann, R., Walz, D., Muggli, P., Scott, A., Yoder, R., & /LLNL, Livermore /UCLA /SLAC /Southern California U. /UC, Santa Barbara /Manhattan Coll., Riverdale. Ultra-High Gradient Dielectric Wakefield Accelerator Experiments. United States.
Thompson, M.C., Badakov, H., Rosenzweig, J.B., Travish, G., Hogan, M., Ischebeck, R., Kirby, N., Siemann, R., Walz, D., Muggli, P., Scott, A., Yoder, R., and /LLNL, Livermore /UCLA /SLAC /Southern California U. /UC, Santa Barbara /Manhattan Coll., Riverdale. Tue . "Ultra-High Gradient Dielectric Wakefield Accelerator Experiments". United States. doi:. https://www.osti.gov/servlets/purl/901585.
@article{osti_901585,
title = {Ultra-High Gradient Dielectric Wakefield Accelerator Experiments},
author = {Thompson, M.C. and Badakov, H. and Rosenzweig, J.B. and Travish, G. and Hogan, M. and Ischebeck, R. and Kirby, N. and Siemann, R. and Walz, D. and Muggli, P. and Scott, A. and Yoder, R. and /LLNL, Livermore /UCLA /SLAC /Southern California U. /UC, Santa Barbara /Manhattan Coll., Riverdale},
abstractNote = {Ultra-high gradient dielectric wakefield accelerators are a potential option for a linear collider afterburner since they are immune to the ion collapse and electron/positron asymmetry problems implicit in a plasma based afterburner. The first phase of an experiment to study the performance of dielectric Cerenkov wakefield accelerating structures at extremely high gradients in the GV/m range has been completed. The experiment took advantage of the unique SLAC FFTB electron beam and its ultra-short pulse lengths and high currents (e.g., {sigma}{sub z} = 20 {micro}m at Q = 3 nC). The FFTB electron beam was successfully focused down and sent through short lengths of fused silica capillary tubing (ID = 200 {micro}m/OD = 325 {micro}m). The pulse length of the electron beam was varied to produce a range of electric fields between 2 and 20 GV/m at the inner surface of the dielectric tubes. We observed a sharp increase in optical emissions from the capillaries in the middle part of this surface field range which we believe indicates the transition between sustainable field levels and breakdown. If this initial interpretation is correct, the surfaced fields that were sustained equate to on axis accelerating field of several GV/m. In future experiments being developed for the SLAC SABER and BNL ATF we plan to use the coherent Cerenkov radiation emitted from the capillary tube as a field strength diagnostic and demonstrate GV/m range particle energy gain.},
doi = {},
journal = {AIP Conf.Proc.877:903-909,2006},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 27 00:00:00 EDT 2007},
month = {Tue Mar 27 00:00:00 EDT 2007}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: