LINAC2016 - List of Authors (Zhang, Y.)

Paper	Title	Page
MOPRC004	Beam Orbit Analysis and Correction of the FRIB Superconducting Linac	71
	Y. Zhang, Z.Q. He FRIB, East Lansing, USA
	Funding: Work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661 Beam based alignment (BBA) techniques are important tools for precise beam orbit correction of a high power linac, and supplement to the model based or orbit response matrix (ORM) based correction methods. BBA will be applied to beam orbit analysis and correction of the FRIB linac arcs where a beam orbit offset within 0.1 mm is required to the second order achromatic beam tuning. In this paper, we first introduce the study of model based beam orbit correction of the arc, and then a more precise orbit correction with BBA. Realistic misalignment of beam elements and beam position monitors (BPMs) are included in the simulation studies.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOPRC004
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MOPRC005	Beam Tuning of Achromatic Bending Areas of the FRIB Superconducting Linac	74
	Y. Zhang, C.P. Chu FRIB, East Lansing, Michigan, USA
	Funding: Work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661 To achieve the design beam power for heaviest ion species, acceleration and transport of multi charge state beams simultaneously in the FRIB superconducting linac becomes necessary, which poses a technical challenge especially to the FRIB folded lattice design. Achromatic and isochronous beam optics up to the second order must be established precisely in the linac bending areas, and as none-perfection beam elements and system errors exist in the real machine, beam tuning and beam optics corrections of the bending area are important to high power operation. In this paper, we introduce the beam tuning algorithms of the FRIB linac achromatic arcs and also discuss the simulation studies.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOPRC005
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MOPRC006	Beam Tuning and Error Analysis of a Superconducting Linac	77
	Y. Zhang FRIB, East Lansing, USA
	Funding: Work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661 Beam tuning and error analysis of a superconducting linac for heavy ion beams are introduced in this paper. In simulation studies with accelerator codes, system errors to the beam tuning are analyzed numerically, which include random cavity and magnet errors and measurement errors of absolute beam phase, beam bunch length, and beam transverse profiles. Simple statistical equations are developed from the tedious and time-consuming numerical simulations, and they may provide advantage tools not only to analyze a linac beam tuning, such as phase and amplitude tuning of superconducting cavity, longitudinal and transverse beam matching, but also will be very helpful to linac design with practical beam diagnostics system and authentic accelerator lattice.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOPRC006
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MOPRC015	Development Status of FRIB On-line Model Based Beam Commissioning Application	100
	Z.Q. He, M.A. Davidsaver, K. Fukushima, D.G. Maxwell, G. Shen, Y. Zhang, Q. Zhao FRIB, East Lansing, Michigan, USA
	Funding: The work is supported by the U.S. National Science Foundation under Grant No. PHY-11-02511, and the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661. The new software FLAME has been developed to serve as physics model used for on-line beam commissioning applications. FLAME is specially designed to cover FRIB modeling challenges to balance between speed and precision. Several on-line beam commissioning applications have been prototyped based on FLAME and tested on the physics application prototyping environment. In this paper, components of the physics application prototyping environment are firstly described. Then, the design strategy and result of the four major applications: baseline generator, cavity tuning, orbit correction, transverse matching, are discussed.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOPRC015
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Paper

Title

Page

Beam Orbit Analysis and Correction of the FRIB Superconducting Linac

71

Y. Zhang, Z.Q. He
FRIB, East Lansing, USA

Funding: Work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661
Beam based alignment (BBA) techniques are important tools for precise beam orbit correction of a high power linac, and supplement to the model based or orbit response matrix (ORM) based correction methods. BBA will be applied to beam orbit analysis and correction of the FRIB linac arcs where a beam orbit offset within 0.1 mm is required to the second order achromatic beam tuning. In this paper, we first introduce the study of model based beam orbit correction of the arc, and then a more precise orbit correction with BBA. Realistic misalignment of beam elements and beam position monitors (BPMs) are included in the simulation studies.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOPRC004

Export •

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

MOPRC005

Beam Tuning of Achromatic Bending Areas of the FRIB Superconducting Linac

74

Y. Zhang, C.P. Chu
FRIB, East Lansing, Michigan, USA

Funding: Work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661
To achieve the design beam power for heaviest ion species, acceleration and transport of multi charge state beams simultaneously in the FRIB superconducting linac becomes necessary, which poses a technical challenge especially to the FRIB folded lattice design. Achromatic and isochronous beam optics up to the second order must be established precisely in the linac bending areas, and as none-perfection beam elements and system errors exist in the real machine, beam tuning and beam optics corrections of the bending area are important to high power operation. In this paper, we introduce the beam tuning algorithms of the FRIB linac achromatic arcs and also discuss the simulation studies.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOPRC005

Export •

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

MOPRC006

Beam Tuning and Error Analysis of a Superconducting Linac

77

Y. Zhang
FRIB, East Lansing, USA

Funding: Work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661
Beam tuning and error analysis of a superconducting linac for heavy ion beams are introduced in this paper. In simulation studies with accelerator codes, system errors to the beam tuning are analyzed numerically, which include random cavity and magnet errors and measurement errors of absolute beam phase, beam bunch length, and beam transverse profiles. Simple statistical equations are developed from the tedious and time-consuming numerical simulations, and they may provide advantage tools not only to analyze a linac beam tuning, such as phase and amplitude tuning of superconducting cavity, longitudinal and transverse beam matching, but also will be very helpful to linac design with practical beam diagnostics system and authentic accelerator lattice.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOPRC006

Export •

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

MOPRC015

Development Status of FRIB On-line Model Based Beam Commissioning Application

100

Z.Q. He, M.A. Davidsaver, K. Fukushima, D.G. Maxwell, G. Shen, Y. Zhang, Q. Zhao
FRIB, East Lansing, Michigan, USA

Funding: The work is supported by the U.S. National Science Foundation under Grant No. PHY-11-02511, and the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661.
The new software FLAME has been developed to serve as physics model used for on-line beam commissioning applications. FLAME is specially designed to cover FRIB modeling challenges to balance between speed and precision. Several on-line beam commissioning applications have been prototyped based on FLAME and tested on the physics application prototyping environment. In this paper, components of the physics application prototyping environment are firstly described. Then, the design strategy and result of the four major applications: baseline generator, cavity tuning, orbit correction, transverse matching, are discussed.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-MOPRC015

Export •

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