Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Dark currents studies with the Uppsala X-band Spectrometer at XBox test stand at CERN
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, FREIA. (Accelerator Physics)
2019 (English)Report (Other academic)
Abstract [en]

Vacuum arcs is the phenomenon which limits the performance of normal conducting acceleratorcavities. It closely depends on electron field emission, which is consider a precursor for the creationof a vacuum discharge. These processes are still not fully understood, but we know that theydepend on the physical properties of the surfaces and bulk materials used in the acceleratorstructures. We need to come at these problems with a multidisciplinary approach, comprisingaccelerator, material and surface physics, for both experimental and theoretical analysis.The field emission current emitted during operation of the RF cavity is typically refer to as thedark current. Behavior of the dark current can give useful information about changes inside thestructure during conditioning and thus into the physics of the vacuum arcs. The Uppsala groupuses a magnetic spectrometer to look at the changes, both spatially on the screen and by measuringthe energy spectrum of the escaping electrons during conditioning of CLIC X-band structuresin dedicated high-power RF test stand at CERN. The spectrometer was originally designedto measure the electrons from the breakdown events with much higher intensities than the darkcurrent signals. In this paper we present the attempt to measure the dark current with the samesetup.

Place, publisher, year, edition, pages
2019. , p. 7
Series
FREIA Report ; 2019/04
National Category
Accelerator Physics and Instrumentation
Identifiers
URN: urn:nbn:se:uu:diva-392193OAI: oai:DiVA.org:uu-392193DiVA, id: diva2:1347278
Available from: 2019-08-30 Created: 2019-08-30 Last updated: 2019-09-03Bibliographically approved

Open Access in DiVA

fulltext(1266 kB)15 downloads
File information
File name FULLTEXT01.pdfFile size 1266 kBChecksum SHA-512
73039363e64a34ce2ca3aaf1b2a4085f0489f96fa4f6c52c69e138f9af817fe068d0e00d3621ee33bfc06965bf683c4ef5187fa534183af5e5fbe12bc7753fbb
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Jacewicz, Marek
By organisation
FREIA
Accelerator Physics and Instrumentation

Search outside of DiVA

GoogleGoogle Scholar
Total: 15 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 52 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf