Nano-patterned superconducting surface for high quantum efficiency cathode
Abstract
A method for providing a superconducting surface on a laser-driven niobium cathode in order to increase the effective quantum efficiency. The enhanced surface increases the effective quantum efficiency by improving the laser absorption of the surface and enhancing the local electric field. The surface preparation method makes feasible the construction of superconducting radio frequency injectors with niobium as the photocathode. An array of nano-structures are provided on a flat surface of niobium. The nano-structures are dimensionally tailored to interact with a laser of specific wavelength to thereby increase the electron yield of the surface.
- Inventors:
- Issue Date:
- Research Org.:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1346020
- Patent Number(s):
- 9589757
- Application Number:
- 14/862,640
- Assignee:
- JEFFERSON SCIENCE ASSOCIATES, LLC
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B24 - GRINDING B24B - MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- DOE Contract Number:
- AC05-06OR23177
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2015 Sep 23
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Hannon, Fay, and Musumeci, Pietro. Nano-patterned superconducting surface for high quantum efficiency cathode. United States: N. p., 2017.
Web.
Hannon, Fay, & Musumeci, Pietro. Nano-patterned superconducting surface for high quantum efficiency cathode. United States.
Hannon, Fay, and Musumeci, Pietro. Tue .
"Nano-patterned superconducting surface for high quantum efficiency cathode". United States. https://www.osti.gov/servlets/purl/1346020.
@article{osti_1346020,
title = {Nano-patterned superconducting surface for high quantum efficiency cathode},
author = {Hannon, Fay and Musumeci, Pietro},
abstractNote = {A method for providing a superconducting surface on a laser-driven niobium cathode in order to increase the effective quantum efficiency. The enhanced surface increases the effective quantum efficiency by improving the laser absorption of the surface and enhancing the local electric field. The surface preparation method makes feasible the construction of superconducting radio frequency injectors with niobium as the photocathode. An array of nano-structures are provided on a flat surface of niobium. The nano-structures are dimensionally tailored to interact with a laser of specific wavelength to thereby increase the electron yield of the surface.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 07 00:00:00 EST 2017},
month = {Tue Mar 07 00:00:00 EST 2017}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
Works referenced in this record:
Apparatus for the electrolytic polishing of niobium structures
patent, February 1976
- Diepers, Heinrich; Schmidt, Otto
- US Patent Document 3,939,053
Method for the electrolytic polishing of the inside surface hollow niobium bodies
patent, March 1977
- Roth, Arthur J.; Schmidt, Otto
- US Patent Document 4,014,765
Semiconductor photocathode and semiconductor photocathode apparatus using the same
patent, July 1999
- Nihashi, Tokuaki; Niigaki, Minoru
- US Patent Document 5,923,045
Method of surface preparation of niobium
patent, February 2003
- Srinivasan-Rao, Triveni; Schill, John F.
- US Patent Document 6,524,170
Sintered wire cesium dispenser photocathode
patent, March 2014
- Montgomery, Eric John; Ives, R. Lawrence; Falce, Louis R.
- US Patent Document 8,664,853
Secondary emission electron gun using external primaries
patent-application, February 2006
- Srinivasan-Rao, Triveni; Ben-Zvi, Ilan; Kewisch, Jorg
- US Patent Application 10/917309; 20060033417