Advanced Surface Polishing For Accelerator Technology Using Ion Beams
Creators
- 1. Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439 (United States)
- 2. Purdue University, 400 Central Drive, West Lafayette, IN 47907 (United States)
- 3. Thomas Jefferson National Accelerator Facility, 12000 Jefferson Avenue, Newport News, VA 23606 (United States)
Description
A gas cluster ion beam (GCIB) technology was successfully applied to surface treatment of Cu, stainless steel, Ti, and Nb samples and to Nb rf-cavities by using accelerated cluster ion beams of Ar, O2 and combinations of them, with accelerating voltages up to 35 kV. DC field emission (dark current) measurements and electron microscopy were used to investigate metal surfaces treated by GCIB. The experimental results showed that GCIB technique can significantly reduce the number of field emitters and can change the structure of the Nb oxide layer on the surface. The RF tests of the GCIB-treated Nb rf-cavities showed improvement of the quality factor Q at 4.5 K. The superconducting gap was also enhanced by using the oxygen GCIB irradiation exposure.
Additional details
Identifiers
- DOI
- 10.1063/1.3120076;
Publishing Information
- Journal Title
- AIP Conference Proceedings
- Journal Volume
- 1099
- Journal Issue
- 1
- Journal Page Range
- p. 46-50
- ISSN
- 0094-243X
- CODEN
- APCPCS
Conference
- Title
- 12. international conference on application of accelerators in research and industry
- Acronym
- CAARI 2008
- Dates
- 10-15 Aug 2008
- Place
- Fort Worth, TX (United States)
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 41036943
- Subject category
- S36: MATERIALS SCIENCE; S43: PARTICLE ACCELERATORS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ARGON IONS; CAVITY RESONATORS; CLUSTER BEAMS; COPPER; ELECTRON MICROSCOPY; ENERGY GAP; FIELD EMISSION; ION BEAMS; IRRADIATION; LAYERS; NIOBIUM; RF SYSTEMS; STAINLESS STEELS; SUPERCONDUCTIVITY; SURFACE TREATMENTS; SURFACES; TITANIUM
- Descriptors DEC
- ALLOYS; BEAMS; CARBON ADDITIONS; CHARGED PARTICLES; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELECTRONIC EQUIPMENT; ELEMENTS; EMISSION; EQUIPMENT; HIGH ALLOY STEELS; IONS; IRON ALLOYS; IRON BASE ALLOYS; METALS; MICROSCOPY; PHYSICAL PROPERTIES; REFRACTORY METALS; RESONATORS; STEELS; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENTS
Optional Information
- Notes
- (c) 2009 American Institute of Physics