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Title: Field Emission in Superconducting Accelerators: Instrumented Measurements for Its Understanding and Mitigation

Abstract

Several new accelerator projects are adopting superconducting accelerator technology. When accelerating cavities maintain high RF gradients, field emission, the emission of electrons from cavity walls, can occur and may impact operational cavity gradient, radiological environment via activated components, and reliability. In this talk, we will discuss instrumented measurements of field emission from the two 1.1 GeV superconducting continuous wave (CW) linacs in CEBAF. The goal is to improve the understanding of field emission sources originating from cryomodule production, installation and operation. Such basic knowledge is needed in guiding field emission control, mitigation, and reduction toward high gradient and reliable operation of superconducting accelerators.

Authors:
 [1];  [1];  [1];  [1];  [2]
  1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1440583
Report Number(s):
JLAB-ACC-17-2621; DOE/OR/23177-4311
DOE Contract Number:
AC05-06OR23177
Resource Type:
Conference
Resource Relation:
Journal Name: Proceedings, 6th International Beam Instrumentation Conference, IBIC2017; Conference: 6th International Beam Instrumentation Conference (IBIC 2017) , 20-24 Aug 2017. Grand Rapids, MI, USA
Country of Publication:
United States
Language:
English

Citation Formats

Geng, Rongli, Freyberger, Arne P., Legg, Robert A., Suleiman, Riad S., and Fisher, Alan S. Field Emission in Superconducting Accelerators: Instrumented Measurements for Its Understanding and Mitigation. United States: N. p., 2018. Web. doi:10.18429/JACoW-IBIC2017-TH1AB1.
Geng, Rongli, Freyberger, Arne P., Legg, Robert A., Suleiman, Riad S., & Fisher, Alan S. Field Emission in Superconducting Accelerators: Instrumented Measurements for Its Understanding and Mitigation. United States. doi:10.18429/JACoW-IBIC2017-TH1AB1.
Geng, Rongli, Freyberger, Arne P., Legg, Robert A., Suleiman, Riad S., and Fisher, Alan S. Thu . "Field Emission in Superconducting Accelerators: Instrumented Measurements for Its Understanding and Mitigation". United States. doi:10.18429/JACoW-IBIC2017-TH1AB1. https://www.osti.gov/servlets/purl/1440583.
@article{osti_1440583,
title = {Field Emission in Superconducting Accelerators: Instrumented Measurements for Its Understanding and Mitigation},
author = {Geng, Rongli and Freyberger, Arne P. and Legg, Robert A. and Suleiman, Riad S. and Fisher, Alan S.},
abstractNote = {Several new accelerator projects are adopting superconducting accelerator technology. When accelerating cavities maintain high RF gradients, field emission, the emission of electrons from cavity walls, can occur and may impact operational cavity gradient, radiological environment via activated components, and reliability. In this talk, we will discuss instrumented measurements of field emission from the two 1.1 GeV superconducting continuous wave (CW) linacs in CEBAF. The goal is to improve the understanding of field emission sources originating from cryomodule production, installation and operation. Such basic knowledge is needed in guiding field emission control, mitigation, and reduction toward high gradient and reliable operation of superconducting accelerators.},
doi = {10.18429/JACoW-IBIC2017-TH1AB1},
journal = {Proceedings, 6th International Beam Instrumentation Conference, IBIC2017},
number = ,
volume = ,
place = {United States},
year = {Thu Mar 01 00:00:00 EST 2018},
month = {Thu Mar 01 00:00:00 EST 2018}
}

Conference:
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