SRF2017 - List of Authors (Kelly, M.P.)

Paper	Title	Page
TUXAA03	Progress of FRIB SRF Production	345
	T. Xu, H. Ao, B. Bird, N.K. Bultman, F. Casagrande, C. Compton, K.D. Davidson, K. Elliott, A. Facco, V. Ganni, A. Ganshyn, W. Hartung, M. Ikegami, P. Knudsen, S.M. Lidia, E.S. Metzgar, S.J. Miller, D.G. Morris, P.N. Ostroumov, J.T. Popielarski, L. Popielarski, M.A. Reaume, K. Saito, S. Shanab, M. Shuptar, S. Stark, D.R. Victory, J. Wei, J.D. Wenstrom, M. Xu, Y. Xu, Y. Yamazaki FRIB, East Lansing, Michigan, USA A. Facco INFN/LNL, Legnaro (PD), Italy K. Hosoyama KEK, Ibaraki, Japan M.P. Kelly ANL, Argonne, Illinois, USA R.E. Laxdal TRIUMF, Vancouver, Canada M. Wiseman JLab, Newport News, Virginia, USA
	Funding: Work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661 The Facility for Rare Isotope Beams (FRIB), under construction at Michigan State University, will utilize a driver linac to accelerate stable ion beams from protons to uranium up to energies of >200 MeV per nucleon with a beam power of up to 400 kW. The FRIB linac consists of 46 cryomodules containing a total of 324 superconducting radio-frequency (SRF) resonators and 69 superconducting solenoids. The design of all six type cryomodules has been completed. The critical SRF components are tested as subsystem and validated in the pre-production cryomodules. The mass production of SRF cryomodules is underway. Here we report on the progress of the technical construction of FRIB superconducting linac.
	Slides TUXAA03 [4.006 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-SRF2017-TUXAA03
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TUPB071	Test Result of 650 MHz, Beta 0.61 Single-cell Niobium Cavity	553
	S. Seth, P. Bhattacharyya, A. Dutta Gupta, S. Ghosh, S. Ghosh, A. Mandal, S. Som VECC, Kolkata, India A. Grassellino, T.N. Khabiboulline, O.S. Melnychuk, C.S. Mishra, T.H. Nicol, A.M. Rowe, D.A. Sergatskov Fermilab, Batavia, Illinois, USA M.P. Kelly, T. Reid ANL, Argonne, Illinois, USA K.K. Mistri, P.N. Prakash IUAC, New Delhi, India
	VECC has been involved in the design, analysis and development of 650 MHz, beta 0.61 (LB650), elliptical Superconducting RF linac cavity, as part of research and development activities on SRF cavities and associated technologies under Indian Institutions Fermilab Collaboration (IIFC). A single-cell niobium cavity has been indigenously designed and developed at VECC, with the help of Electron Beam Welding (EBW) facility at IUAC, New Delhi. Various measurements, processing and testing at 2K in Vertical Test Stand (VTS) of the single-cell cavity was carried out at ANL and Fermilab, USA, with active participation of VECC engineers. It achieved a maximum accelerating gradient(Eacc) of 34.5 MV/m with Quality Factor of 2·10⁹ and 30 MV/m with Quality Factor of 1.5·10¹⁰. This is probably the highest accelerating gradient achieved so far in the world for LB650 cavities. This paper describes the design, fabrication and measurement of the single cell niobium cavity. Cavity processing and test results of Vertical Test of the single-cell niobium cavity are also presented.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-SRF2017-TUPB071
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WEYA01	A Superconducting Harmonic Cavity System for the ANL Advanced Photon Source
	M.P. Kelly ANL, Argonne, Illinois, USA
	Superconducting cavities are attractive for light source storage rings both as main rf cavities and as harmonic cavities due to their compact size and relatively straightforward handling of higher order modes which are a serious technical issue in nearly all new ampere-class machines. A 1.4 GHz superconducting bunch lengthening cavity for the Advanced Photon Source Upgrade project and ancillary systems including a high-power cw variable coupler and beamline higher order mode damper have all been prototyped and tested. Speaker - Sang-hoon Kim
	Slides WEYA01 [5.316 MB]
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WEYA05	Progress Toward 2 K High Performance Half-wave Resonators and Cryomodule	692
	Z.A. Conway, B.M. Guilfoyle, M. Kedzie, M.P. Kelly, T. Reid ANL, Argonne, Illinois, USA H. Guo IMP/CAS, Lanzhou, People's Republic of China
	Funding: This material is based upon work supported by the U.S. DOE, Office of Science's Office of Nuclear Physics and Office of High Energy Physics, contract numbers DE-AC02-06CH11357 and DE-AC02-76CH03000. Argonne National Laboratory is implementing a novel 2.0 K superconducting cavity cryomodule operating at 162.5 MHz. This cryomodule is designed for the acceleration of 2 mA H-/proton beams from 2.1 to 10.3 MeV as part of the Fermilab Proton Improvement Project-II (PIP-II). The 2.0 K cryomodule is comprised of 8 half-wave cavities operated in the continuous wave mode with 8 superconducting magnets, one in front of each cavity. In this paper we will review recent cavity results which demonstrate continuous-wave operated cavities with low-field residual resistances of 2.5 nΩ which achieve peak surface fields up to 134 MV/m and 144 mT, electric and magnetic respectively, with field emission onset fields greater than 70 MV/m in the production cavities following the prototyping effort.
	Slides WEYA05 [1.967 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-SRF2017-WEYA05
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FRXBA03	Coaxial Power Coupler Development at Argonne National Laboratory
	M.P. Kelly, S.H. Kim ANL, Argonne, Illinois, USA
	A series of coaxial rf power couplers with increasingly stringent demands on power handling, reliability and flexibilty of operations has been developed over the past decade at ANL. Intended for use in new and upcoming high-power SRF-based cavity linacs, these couplers span a range of physical sizes from 40-80 mm, frequencies from 72 MHz to 1.4 GHz, and cw power handling requirements from a few kiloWatts up to 20 kW thus far. Most of these also incorporate the capability to adjust the coupler axially in order to optimize the Qext due to effects of, for example, beam loading and multipacting. Several particular issues of mechanical, thermal and electromagnetic design, many uncovered through extensive experimental testing, are discussed.
	Slides FRXBA03 [11.881 MB]
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Paper

Title

Page

Progress of FRIB SRF Production

345

T. Xu, H. Ao, B. Bird, N.K. Bultman, F. Casagrande, C. Compton, K.D. Davidson, K. Elliott, A. Facco, V. Ganni, A. Ganshyn, W. Hartung, M. Ikegami, P. Knudsen, S.M. Lidia, E.S. Metzgar, S.J. Miller, D.G. Morris, P.N. Ostroumov, J.T. Popielarski, L. Popielarski, M.A. Reaume, K. Saito, S. Shanab, M. Shuptar, S. Stark, D.R. Victory, J. Wei, J.D. Wenstrom, M. Xu, Y. Xu, Y. Yamazaki
FRIB, East Lansing, Michigan, USA
A. Facco
INFN/LNL, Legnaro (PD), Italy
K. Hosoyama
KEK, Ibaraki, Japan
M.P. Kelly
ANL, Argonne, Illinois, USA
R.E. Laxdal
TRIUMF, Vancouver, Canada
M. Wiseman
JLab, Newport News, Virginia, USA

Funding: Work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661
The Facility for Rare Isotope Beams (FRIB), under construction at Michigan State University, will utilize a driver linac to accelerate stable ion beams from protons to uranium up to energies of >200 MeV per nucleon with a beam power of up to 400 kW. The FRIB linac consists of 46 cryomodules containing a total of 324 superconducting radio-frequency (SRF) resonators and 69 superconducting solenoids. The design of all six type cryomodules has been completed. The critical SRF components are tested as subsystem and validated in the pre-production cryomodules. The mass production of SRF cryomodules is underway. Here we report on the progress of the technical construction of FRIB superconducting linac.

Slides TUXAA03 [4.006 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-SRF2017-TUXAA03

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPB071

Test Result of 650 MHz, Beta 0.61 Single-cell Niobium Cavity

553

S. Seth, P. Bhattacharyya, A. Dutta Gupta, S. Ghosh, S. Ghosh, A. Mandal, S. Som
VECC, Kolkata, India
A. Grassellino, T.N. Khabiboulline, O.S. Melnychuk, C.S. Mishra, T.H. Nicol, A.M. Rowe, D.A. Sergatskov
Fermilab, Batavia, Illinois, USA
M.P. Kelly, T. Reid
ANL, Argonne, Illinois, USA
K.K. Mistri, P.N. Prakash
IUAC, New Delhi, India

VECC has been involved in the design, analysis and development of 650 MHz, beta 0.61 (LB650), elliptical Superconducting RF linac cavity, as part of research and development activities on SRF cavities and associated technologies under Indian Institutions Fermilab Collaboration (IIFC). A single-cell niobium cavity has been indigenously designed and developed at VECC, with the help of Electron Beam Welding (EBW) facility at IUAC, New Delhi. Various measurements, processing and testing at 2K in Vertical Test Stand (VTS) of the single-cell cavity was carried out at ANL and Fermilab, USA, with active participation of VECC engineers. It achieved a maximum accelerating gradient(Eacc) of 34.5 MV/m with Quality Factor of 2·10⁹ and 30 MV/m with Quality Factor of 1.5·10¹⁰. This is probably the highest accelerating gradient achieved so far in the world for LB650 cavities. This paper describes the design, fabrication and measurement of the single cell niobium cavity. Cavity processing and test results of Vertical Test of the single-cell niobium cavity are also presented.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-SRF2017-TUPB071

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEYA01

A Superconducting Harmonic Cavity System for the ANL Advanced Photon Source

M.P. Kelly
ANL, Argonne, Illinois, USA

Superconducting cavities are attractive for light source storage rings both as main rf cavities and as harmonic cavities due to their compact size and relatively straightforward handling of higher order modes which are a serious technical issue in nearly all new ampere-class machines. A 1.4 GHz superconducting bunch lengthening cavity for the Advanced Photon Source Upgrade project and ancillary systems including a high-power cw variable coupler and beamline higher order mode damper have all been prototyped and tested. Speaker - Sang-hoon Kim

Slides WEYA01 [5.316 MB]

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEYA05

Progress Toward 2 K High Performance Half-wave Resonators and Cryomodule

692

Z.A. Conway, B.M. Guilfoyle, M. Kedzie, M.P. Kelly, T. Reid
ANL, Argonne, Illinois, USA
H. Guo
IMP/CAS, Lanzhou, People's Republic of China

Funding: This material is based upon work supported by the U.S. DOE, Office of Science's Office of Nuclear Physics and Office of High Energy Physics, contract numbers DE-AC02-06CH11357 and DE-AC02-76CH03000.
Argonne National Laboratory is implementing a novel 2.0 K superconducting cavity cryomodule operating at 162.5 MHz. This cryomodule is designed for the acceleration of 2 mA H-/proton beams from 2.1 to 10.3 MeV as part of the Fermilab Proton Improvement Project-II (PIP-II). The 2.0 K cryomodule is comprised of 8 half-wave cavities operated in the continuous wave mode with 8 superconducting magnets, one in front of each cavity. In this paper we will review recent cavity results which demonstrate continuous-wave operated cavities with low-field residual resistances of 2.5 nΩ which achieve peak surface fields up to 134 MV/m and 144 mT, electric and magnetic respectively, with field emission onset fields greater than 70 MV/m in the production cavities following the prototyping effort.

Slides WEYA05 [1.967 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-SRF2017-WEYA05

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

FRXBA03

Coaxial Power Coupler Development at Argonne National Laboratory

M.P. Kelly, S.H. Kim
ANL, Argonne, Illinois, USA

A series of coaxial rf power couplers with increasingly stringent demands on power handling, reliability and flexibilty of operations has been developed over the past decade at ANL. Intended for use in new and upcoming high-power SRF-based cavity linacs, these couplers span a range of physical sizes from 40-80 mm, frequencies from 72 MHz to 1.4 GHz, and cw power handling requirements from a few kiloWatts up to 20 kW thus far. Most of these also incorporate the capability to adjust the coupler axially in order to optimize the Qext due to effects of, for example, beam loading and multipacting. Several particular issues of mechanical, thermal and electromagnetic design, many uncovered through extensive experimental testing, are discussed.

Slides FRXBA03 [11.881 MB]

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)