Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Uttar Pudasaini"'
Autor:
Pashupati Dhakal, Gianluigi Ciovati, Uttar Pudasaini, Santosh Chetri, Shreyas Balachandran, Peter J. Lee
Publikováno v:
Physical Review Accelerators and Beams, Vol 22, Iss 12, p 122002 (2019)
We report the results from the measurements of high purity Nb samples and superconducting radio-frequency (SRF) cavities doped with nitrogen and followed by either electropolishing (EP) or buffered chemical polishing (BCP), in order to understand the
Externí odkaz:
https://doaj.org/article/5203e18f0a1e494eb5d0270b52322540
Publikováno v:
Vacuum. 212:112019
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca2c2365c049b24896359e919e022e02
https://doi.org/10.1016/j.vacuum.2023.112019
https://doi.org/10.1016/j.vacuum.2023.112019
Publikováno v:
Journal of Alloys and Compounds. 800:272-278
Nb3Sn thin films are fabricated by sequential sputtering followed by annealing at 850–1200 °C in vacuum. The effects of the annealing temperature and time on the formation of Nb3Sn were examined. The film crystal structure, morphology, surface top
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27ed030bfd64d3603cd2a663d6493556
https://doi.org/10.1016/j.jallcom.2019.06.017
https://doi.org/10.1016/j.jallcom.2019.06.017
Nb3Sn films were fabricated by multilayer sequential sputtering on Nb at substrate temperatures ranging from room temperature to 250 {\deg}C. The multilayers were then annealed inside a separate vacuum furnace at 950 {\deg}C for 3h. The films materia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94834c0011c662573d42d041d8674499
Superconducting radio-frequency cavities are commonly used in modern particle accelerators for applied and fundamental research. Such cavities are typically made of high-purity, bulk Nb and with cooling by a liquid helium bath at a temperature of ~2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff218ef748f0fd68b28b66412f2234fe
http://arxiv.org/abs/2001.10924
http://arxiv.org/abs/2001.10924
Superconducting Nb3Sn films were fabricated on sapphire and fine grain Nb substrates by magnetron sputtering from a single stoichiometric Nb3Sn target. The structural, morphological and superconducting properties of the films annealed for 24 h at tem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c1cface6dda83e4ac39a8ee4d9469e17
Autor:
Peter J. Lee, Gianluigi Ciovati, Santosh Chetri, Uttar Pudasaini, Pashupati Dhakal, Shreyas Balachandran
Publikováno v:
Physical Review Accelerators and Beams, Vol 22, Iss 12, p 122002 (2019)
We report the results from the measurements of high purity Nb samples and superconducting radio-frequency (SRF) cavities doped with nitrogen and followed by either electropolishing (EP) or buffered chemical polishing (BCP), in order to understand the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::23f988fff3129a8fa89bf64be903fac5
https://doi.org/10.1103/physrevaccelbeams.22.122002
https://doi.org/10.1103/physrevaccelbeams.22.122002
Nb3Sn has the potential to achieve superior performance in terms of quality factor, accelerating gradient and operating temperature (4.2 K vs 2 K) resulting in significant reduction in both capital and operating costs compared to traditional niobium
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::844173e15ad4cc4b4aa4043c67e43bda
https://hdl.handle.net/10919/93050
https://hdl.handle.net/10919/93050
Autor:
C. E. Reece, William Clemens, Anne-Marie Valente-Feliciano, S. Williams, Michael J. Kelley, Uttar Pudasaini, Kurt Macha, Grigory Eremeev
Publikováno v:
Review of Scientific Instruments. 91:073911
Superconducting radio frequency niobium cavities are the building blocks of modern accelerators for scientific applications. Lower surface resistance, higher fields, and high operating temperatures advance the reach of the future accelerators for sci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d52f613b1cddb5a31908d80c085c347
https://doi.org/10.1063/1.5144490
https://doi.org/10.1063/1.5144490
Publikováno v:
Superconductor Science and Technology. 33:045012
Nb3Sn (Tc ~ 18 K and Hsh ~ 400 mT) is a prospective material to replace Nb (Tc ~ 9 K and Hsh ~ 200 mT) in SRF accelerator cavities for significant cost reduction and performance enhancement. Because of its material properties, Nb3Sn is best employed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df7f6340dd7f38eedac9e31617921dd4
https://doi.org/10.1088/1361-6668/ab75a8
https://doi.org/10.1088/1361-6668/ab75a8