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Developing particle detection test bench for vacuum components

  • Yashdeep Khopkar
  • , Henry Herbol
  • , Mihir Upadhyaya
  • , Gregory Denbeaux
  • , Vibhu Jindal
  • , Patrick Kearney

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Extreme ultraviolet (EUV) lithography is the leading contender for adoption as the next generation lithography technique. One of the critical challenges in this technology is producing defect-free masks. Particles generated in the fabrication process often deposit on the mask blank and result in phase and amplitude defects. Hence, it is important to study the transport, behavior and generation of particles in the ion deposition tool used for mask blank deposition. We show results on detecting particles from ultrahigh vacuum (UHV) valves by using optical counters and condensation particle counters. The particles were also trapped using impactor plates and analyzed with Energy-dispersive x-ray spectroscopy (EDX) for elemental composition.

Original languageEnglish
Title of host publicationExtreme Ultraviolet (EUV) Lithography III
DOIs
StatePublished - 2012
EventExtreme Ultraviolet (EUV) Lithography III - San Jose, CA, United States
Duration: Feb 13 2012Feb 16 2012

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8322

Conference

ConferenceExtreme Ultraviolet (EUV) Lithography III
Country/TerritoryUnited States
CitySan Jose, CA
Period02/13/1202/16/12

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