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Title: Status of High Power Tests of Normal Conducting Single-Cell Standing Wave Structures

Abstract

Our experiments are directed toward the understanding of the physics of rf breakdown in systems that can be used to accelerate electron beams at {approx}11.4 GHz. The structure geometries have apertures, stored energy per cell, and rf pulse duration close to that of the NLC or CLIC. The breakdown rate is the main parameter that we use to compare rf breakdown behavior for different structures at a given set of rf pulse parameters (pulse shape and peak power) at 60 Hz repetition rate. In our experiments, the typical range of the breakdown rate is from one per few hours to {approx}100 per hour. To date we have tested 29 structures. We consistently found that after the initial conditioning, the behavior of the breakdown rate is reproducible for structures of the same geometry and material, and the breakdown rate dependence on peak magnetic fields is stronger than on peak surface electric fields for structures of different geometries. Below we report the main results from tests of seven structures made from hard copper, soft copper alloys and hard-copper alloys. Additional details on these and other structures will be discussed in future publications.

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1044622
Report Number(s):
SLAC-PUB-15117
TRN: US1203385
DOE Contract Number:  
AC02-76SF00515
Resource Type:
Conference
Journal Name:
Conf.Proc.C100523:THPEA060,2010
Additional Journal Information:
Conference: 1st International Particle Accelerator Conference: IPAC'10, 23-28 May 2010, Kyoto, Japan
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 43 PARTICLE ACCELERATORS; ACCELERATORS; ALLOYS; APERTURES; BREAKDOWN; COPPER; COPPER ALLOYS; ELECTRIC FIELDS; ELECTRON BEAMS; GEOMETRY; MAGNETIC FIELDS; PEAK LOAD; PHYSICS; SHAPE; STANDING WAVES; STORED ENERGY; Accelerators,ACCPHY

Citation Formats

Dolgashev, Valery, /SLAC, Tantawi, Sami, /SLAC, Yeremian, Anahid, /SLAC, Higashi, Yasuo, /KEK, Tsukuba, Spataro, Bruno, and /INFN, Rome. Status of High Power Tests of Normal Conducting Single-Cell Standing Wave Structures. United States: N. p., 2012. Web.
Dolgashev, Valery, /SLAC, Tantawi, Sami, /SLAC, Yeremian, Anahid, /SLAC, Higashi, Yasuo, /KEK, Tsukuba, Spataro, Bruno, & /INFN, Rome. Status of High Power Tests of Normal Conducting Single-Cell Standing Wave Structures. United States.
Dolgashev, Valery, /SLAC, Tantawi, Sami, /SLAC, Yeremian, Anahid, /SLAC, Higashi, Yasuo, /KEK, Tsukuba, Spataro, Bruno, and /INFN, Rome. Mon . "Status of High Power Tests of Normal Conducting Single-Cell Standing Wave Structures". United States. https://www.osti.gov/servlets/purl/1044622.
@article{osti_1044622,
title = {Status of High Power Tests of Normal Conducting Single-Cell Standing Wave Structures},
author = {Dolgashev, Valery and /SLAC and Tantawi, Sami and /SLAC and Yeremian, Anahid and /SLAC and Higashi, Yasuo and /KEK, Tsukuba and Spataro, Bruno and /INFN, Rome},
abstractNote = {Our experiments are directed toward the understanding of the physics of rf breakdown in systems that can be used to accelerate electron beams at {approx}11.4 GHz. The structure geometries have apertures, stored energy per cell, and rf pulse duration close to that of the NLC or CLIC. The breakdown rate is the main parameter that we use to compare rf breakdown behavior for different structures at a given set of rf pulse parameters (pulse shape and peak power) at 60 Hz repetition rate. In our experiments, the typical range of the breakdown rate is from one per few hours to {approx}100 per hour. To date we have tested 29 structures. We consistently found that after the initial conditioning, the behavior of the breakdown rate is reproducible for structures of the same geometry and material, and the breakdown rate dependence on peak magnetic fields is stronger than on peak surface electric fields for structures of different geometries. Below we report the main results from tests of seven structures made from hard copper, soft copper alloys and hard-copper alloys. Additional details on these and other structures will be discussed in future publications.},
doi = {},
journal = {Conf.Proc.C100523:THPEA060,2010},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {6}
}

Conference:
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