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Development of the Directly-Sliced Niobium Material for High Performance SRF Cavities
/ Kumar, Ashish (KEK, Tsukuba) ; Araki, Hayato (KEK, Tsukuba) ; Dohmae, Takeshi (KEK, Tsukuba) ; Ito, Hayato (KEK, Tsukuba) ; Saeki, Takayuki (KEK, Tsukuba) ; Umemori, Kensei (KEK, Tsukuba) ; Yamamoto, Akira (KEK, Tsukuba ; CERN ; JAI, UK ; Oxford U.) ; Yamanaka, Masashi (KEK, Tsukuba)
For the purpose of cost reduction for the ILC, KEK has been conducting R&D; on direct sliced Nb materials such as large grain and medium grain Nb. Single-cell, 3-cell, and 9-cell cavities have been manufactured, and each has demonstrated a high-performance accelerating gradient exceeding 35 MV/m. [...]
2023 - 7 p.
- Published in : JACoW SRF 2023 (2023) 634-640
Fulltext: PDF;
In : 21st International Conference on Radio-Frequency Superconductivity (SRF 2023), Grand Rapids, MI, United States, 22 - 30 Jun 2023, pp.634-640
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Next-Generation Superconducting RF Technology based on Advanced Thin Film Technologies and Innovative Materials for Accelerator Enhanced Performance and Energy Reach
/ Valente-Feliciano, A.-.M. (Jefferson Lab) ; Antoine, C. (Jefferson Lab ; IRFU, Saclay, DACM) ; Anlage, S. (Maryland U.) ; Ciovati, G. (Jefferson Lab) ; Delayen, J. (Jefferson Lab ; Old Dominion U.) ; Gerigk, F. (CERN) ; Gurevich, A. (Old Dominion U.) ; Junginger, T. (TRIUMF ; Victoria U.) ; Keckert, S. (Helmholtz-Zentrum, Berlin) ; Keppe, G. (INFN, Legnaro) et al.
Superconducting RF is a key technology for future particle accelerators, now relying on advanced surfaces beyond bulk Nb for a leap in performance and efficiency. [...]
arXiv:2204.02536.
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29.
eConf - Fulltext
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Medium-Grain Niobium SRF Cavity Production Technology for Science Frontiers and Accelerator ApplicationsMedium grain niobium SRF cavity production technology for science frontiers and accelerator applications
/ Myneni, G. (Old Dominion U. ; Unlisted, US ; Old Dominion U. (main) ; Jefferson Lab) ; Hani E. Elsayed-Ali (Old Dominion U. ; Old Dominion U. (main)) ; Islam, Md Obidul (Old Dominion U. ; Old Dominion U. (main)) ; Sayeed, Md Nizam (Old Dominion U. ; Old Dominion U. (main)) ; Ciovati, G. (Jefferson Lab ; Old Dominion U.) ; Dhakal, P. (Jefferson Lab) ; Rimmer, R.A. (Jefferson Lab) ; Carl, M. (Unlisted, US) ; Fajardo, A. (Unlisted, US) ; Lannoy, N. (Unlisted, US) et al.
We propose cost-effective production of medium grain (MG) niobium (Nb) discs directly sliced from forged and annealed billet. This production method provides clean surface conditions and reliable mechanical characteristics with sub-millimeter average grain size resulting in stable SRF cavity production. [...]
arXiv:2203.07371.-
2023-04-21 - 14 p.
- Published in : JINST 18 (2023) T04005
Fulltext: PDF; External link: eConf
In : 2021 Snowmass Summer Study, Seattle, WA, United States, 11 - 20 July 2021, pp.T04005
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Electroweak Measurements in Electron-Positron Collisions at W-Boson-Pair Energies at LEP
/ ALEPH Collaboration
Electroweak measurements performed with data taken at the electron-positron collider LEP at CERN from 1995 to 2000 are reported. The combined data set considered in this report corresponds to a total luminosity of about 3~fb$^{-1}$ collected by the four LEP experiments ALEPH, DELPHI, L3 and OPAL, at centre-of-mass energies ranging from $130~GeV$ to $209~GeV$ [...]
arXiv:1302.3415; CERN-PH-EP-2013-022; CERN-PH-EP-2013-022.-
Geneva : CERN, 2013 - 126 p.
- Published in : Phys. Rep. 532 (2013) 119-244
Draft (restricted): PDF; Fulltext: CERN-PH-EP-2013-022 - PDF; arXiv:1302.3415 - PDF; External link: Preprint
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Search for Charged Higgs bosons: Combined Results Using LEP data
/ ALEPH, DELPHI, L3 and OPAL Collaborations
The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have searched for pair-produced charged Higgs bosons in the framework of Two Higgs Doublet Models (2HDMs). The data of the four experiments are statistically combined. [...]
arXiv:1301.6065; CERN-PH-EP-2012-369; CERN-PH-EP-2012-369; LHWG-Note-2012-01; ALEPH-2012-001-PHYSICS-2012-001; DELPHI-2012-001-PHYS-953; L3-Note-2835; OPAL-PR433.-
Geneva : CERN, 2013 - 18 p.
- Published in : Eur. Phys. J. C 73 (2013) 2463
Draft (restricted): PDF; Fulltext: CERN-PH-EP-2012-369 - PDF; arXiv:1301.6065 - PDF; External link: Preprint
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Tests on the 1.3 GHz Low Loss Single-Cell RF Superconducting Large Grain Cavities of IHEP
/ Zong, Z G (Beijing, Inst. High Energy Phys.) ; Furuta, F (KEK, Tsukuba) ; Gao, J (Beijing, Inst. High Energy Phys.) ; Ge, M Q (Beijing, Inst. High Energy Phys.) ; Gu, J (Beijing, Inst. High Energy Phys.) ; Liu, L Q (Beijing, Tech. Inst. Phys. Chem.) ; Saeki, T (KEK, Tsukuba) ; Saitô, K (KEK, Tsukuba) ; Sun, H (Beijing, Inst. High Energy Phys.) ; Wang, D (Beijing, Inst. High Energy Phys.) et al.
2008 - 3 p.
External link: Published version from JACoW
In : 11th European Particle Accelerator Conference, Genoa, Italy, 23 - 27 Jun 2008, pp.MOPP168
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