Zobrazeno 1 - 10 of 176 pro vyhledávání: '"A. F. Welton"'
1
NIBS 2020 reference sheets
Autor: D. Rauner, R. Friedl, D. Bollinger, K. Tsumori, K. Shinto, O. Hidetomo, I. Draganic, Ursel Fantz, W. Chen, L. Shenjin, D. Wünderlich, T. Sarmento, R. F. Welton
Publikováno v: AIP Conference Proceedings
In preparation for NIBS 2020 various labs prepared reference sheets containing key information about their ion sources and the machines that they serve. The contents of the reference sheets have been formatted and edited into this paper for posterity
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f923ad17c074ef297897d41274fd20d7
https://doi.org/10.1063/5.0057732
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2
H− ion source research and development at the Oak Ridge National Laboratory
Autor: C. Stinson, Y. Kang, O. Tarvainen, A. Aleksandrov, S. N. Murray, C. Piller, M. P. Stockli, Terry R Pennisi, Baoxi Han, Robert F Welton
Publikováno v: SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020).
The U.S. Spallation Neutron Source (SNS) is a state-of-the-art neutron scattering facility delivering the world's most intense pulsed neutron beams to a wide array of instruments which are used to conduct investigations in many fields of science and
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4b686089717324923459c9c0b1298eb5
https://doi.org/10.1063/5.0057549
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3
Recent performance of the SNS H− ion source with a record long run
Autor: S. M. Cousineau, S. N. MurrayJr., Terry R Pennisi, Robert F Welton, C. Stinson, M. P. Stockli, Baoxi Han
Publikováno v: SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020).
The Spallation Neutron Source (SNS) accelerator system includes a 65 keV H- injector, a 2.5 MeV radio frequency quadrupole (RFQ), a 1 GeV linac chain (DTL-CCL-SCL) and an accumulator ring. The H− injector consists of an RF-driven, Cs-enhanced, mult
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0e9a2f5a3187055c194eb51efd0d04c4
https://doi.org/10.1063/5.0057408
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4
Record productions establish RF-driven sources as the standard for generating high-duty-factor, high-current H
Autor: Martin P, Stockli, Robert F, Welton, Baoxi, Han
Publikováno v: The Review of scientific instruments. 89(5)
The Spallation Neutron Source operates reliably at 1.2 MW and will gradually ramp to 1.4 MW. This paper briefly recalls some of the struggles when the unprecedented project was started and ramped to 1 MW over a 3½ year period. This was challenging,
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::7f825605c3946d8ddb9b8b0bcd647ef6
https://pubmed.ncbi.nlm.nih.gov/29864858
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6
Status of the new SNS injector and external antenna ion source
Autor: Robert F Welton, Terry R Pennisi, Y. Kang, C. Stinson, S. N. Murray, M. P. Stockli, A. Aleksandrov, M. Piller, Baoxi Han
Publikováno v: AIP Conference Proceedings.
The U.S. Spallation Neutron Source (SNS) now operates with 1.2 MW of beam power on target with the near-term goal of delivering 1.4 MW and a longer-term goal of delivering >2 MW required by the planned Proton Power Upgrade (PPU) and Second Target Sta
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5466b6ec2eef8ecf17563a127cd6ba00
https://doi.org/10.1063/1.5053301
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7
Carbon film in RF surface plasma source with cesiation
Autor: Terry R Pennisi, Baoxi Han, S. N. Murray, Martin P Stockli, Robert F Welton, V. Dudnikov, Andrei Dudnikov, C. Stinson
Publikováno v: AIP Conference Proceedings.
Deposition of carbon film in RF SPS is observed. It is assumed that persistent cesiation without continuous cesium injection in the Spallation Neutron Source RF Surface Plasma Source (SPS) is related to deposition of carbon film on the collar convert
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9394c5bbb727b5f478221cc93d52ce31
https://doi.org/10.1063/1.5053303
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8
Upgrading the LANSCE accelerator with a SNS RF-driven H− ion source
Autor: Mike Clemmer, Robert W. Garnett, Chip Piller, Vadim Dudnikov, David Kleinjan, Ilija Draganic, C. Stinson, Jacob L. Medina, Robert F Welton, Yoon W. Kang, Martin P. Stockli, Sarah Cousineau, Yuri Batygin, Syd Murray, Baoxi Han, G. Rouleau, Terry R Pennisi, Joel P. Montross, Alan Justice
Publikováno v: Review of Scientific Instruments. 91:013321
The LANSCE accelerator is currently powered by a filament-driven, biased converter-type H- ion source that operates at 10%, the highest plasma duty factor for this type of source, using only ∼2.2 SCCM of H2. The ion source needs to be replaced ever
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::14b0caf0ad3197d21b4ca4b1a20a0cfe
https://doi.org/10.1063/1.5129673
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9
A new 2.5 MeV injector and beam test facility for the spallation neutron source
Autor: V. Peplov, M. Piller, Baoxi Han, Robert F Welton, R. Saethre, M. M. Middendorf, C. Stinson, Y. W. Kang, A. Aleksandrov, Terry R Pennisi, S. N. Murray, M. P. Stockli, Manuel Santana
Publikováno v: AIP Conference Proceedings.
The U.S. Spallation Neutron Source (SNS) now operates with 1.2 MW of beam power on target with the near-term goal of delivering 1.4 MW and a longer-term goal of delivering >2 MW to support a planned second target station. Presently, H− beam pulses
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::228ecfb7a98244f418cb58f6ed2d83a6
https://doi.org/10.1063/1.4995789
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10
Record performance of and extraction studies with the Spallation Neutron Source H− injector
Autor: S. N. Murray, Terry R Pennisi, Martin P. Stockli, Robert F Welton, Manuel Santana, Baoxi Han, C. Stinson
Publikováno v: AIP Conference Proceedings.
During the past year the Spallation Neutron Source has operated with proton beam powers up to 1.4 MW with good availability. However, after a recent premature target failure the power was reduced to 1 MW for the ∼20-week service cycle of the new ta
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::467462e9383124acc2487989efd0e68b
https://doi.org/10.1063/1.4995730
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