IPAC2015 - List of Authors (Gupta, R.C.)

Paper	Title	Page
WEPTY064	Thermal-mechanical Analysis of the FRIB Nuclear Fragment Separator Dipole Magnet	3425
	S.A. Kahn, A. Dudas, G. Flanagan Muons, Inc, Illinois, USA R.C. Gupta BNL, Upton, Long Island, New York, USA
	Funding: This work was supported by the U.S. Department of Energy under Grant DE-SC-0006273 Dipole magnets in the fragment separator region of the Facility for Rare Isotope Beams (FRIB) are critical elements used to select the desired isotopes. These magnets are subjected to high radiation and heat loads. High temperature superconductors (HTS), which have been shown to be radiation resistant and can operate at 40 K where heat removal is substantially more efficient than 4.5 K where conventional superconductors such as NbTi and Nb3Sn operate, are proposed for the coils. The magnet coils carry large current and will be subjected to large Lorentz forces that must be constrained to avoid distortions of the coils. It is desirable to minimize the use of organic materials in the fabrication of this magnet because of the radiation environment. This paper will describe an approach to support the coils to minimize coil deformation and cryogenic heat loss.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-WEPTY064
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WEPWI053	HTS/lTS Hybrid High Field Superconducting Magnet Designs for the Proposed 100 TeV Proton Colliders	3609
	R.C. Gupta, M. Anerella, A.K. Ghosh, W. Sampson, J. Schmalzle BNL, Upton, Long Island, New York, USA J. Kolonko, D. Larson, R.M. Scanlan, R.J. Weggel, E. Willen Particle Beam Lasers, Inc., Northridge, California, USA C.M. Rey e2P, Knoxville, USA
	Funding: Work supported by Brookhaven Science Associates, LLC under contract Number DE-SC0012704, with the U.S. Department of Energy and STTR contract DOE Grant Number DE-SC0011348. Proposed proton-proton colliders with a center-of-mass energy up to 100 TeV in a tunnel of desired size require the dipole magnets to be of very high field–20 teslas in some proposals. This field is beyond the limit of present conventional Low Temperature Superconductors (LTS) and requires using High Temperature Superconductors (HTS). The preliminary magnetic design presented in this paper is an HTS/LTS hybrid design with high strength HTS tape used in higher field regions and less expensive LTS in lower field regions, with a goal of optimizing the performance while reducing the cost. A major concern in the magnets built with the HTS tape is the large field errors associated with the conductor magnetization. The strategy presented here aims to reduce those errors considerably. This paper also presents a proof-of-principle design and program to experimentally evaluate that concept.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-WEPWI053
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Thermal-mechanical Analysis of the FRIB Nuclear Fragment Separator Dipole Magnet

3425

S.A. Kahn, A. Dudas, G. Flanagan
Muons, Inc, Illinois, USA
R.C. Gupta
BNL, Upton, Long Island, New York, USA

Funding: This work was supported by the U.S. Department of Energy under Grant DE-SC-0006273
Dipole magnets in the fragment separator region of the Facility for Rare Isotope Beams (FRIB) are critical elements used to select the desired isotopes. These magnets are subjected to high radiation and heat loads. High temperature superconductors (HTS), which have been shown to be radiation resistant and can operate at 40 K where heat removal is substantially more efficient than 4.5 K where conventional superconductors such as NbTi and Nb3Sn operate, are proposed for the coils. The magnet coils carry large current and will be subjected to large Lorentz forces that must be constrained to avoid distortions of the coils. It is desirable to minimize the use of organic materials in the fabrication of this magnet because of the radiation environment. This paper will describe an approach to support the coils to minimize coil deformation and cryogenic heat loss.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-WEPTY064

Export •

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

WEPWI053

HTS/lTS Hybrid High Field Superconducting Magnet Designs for the Proposed 100 TeV Proton Colliders

3609

R.C. Gupta, M. Anerella, A.K. Ghosh, W. Sampson, J. Schmalzle
BNL, Upton, Long Island, New York, USA
J. Kolonko, D. Larson, R.M. Scanlan, R.J. Weggel, E. Willen
Particle Beam Lasers, Inc., Northridge, California, USA
C.M. Rey
e2P, Knoxville, USA

Funding: Work supported by Brookhaven Science Associates, LLC under contract Number DE-SC0012704, with the U.S. Department of Energy and STTR contract DOE Grant Number DE-SC0011348.
Proposed proton-proton colliders with a center-of-mass energy up to 100 TeV in a tunnel of desired size require the dipole magnets to be of very high field–20 teslas in some proposals. This field is beyond the limit of present conventional Low Temperature Superconductors (LTS) and requires using High Temperature Superconductors (HTS). The preliminary magnetic design presented in this paper is an HTS/LTS hybrid design with high strength HTS tape used in higher field regions and less expensive LTS in lower field regions, with a goal of optimizing the performance while reducing the cost. A major concern in the magnets built with the HTS tape is the large field errors associated with the conductor magnetization. The strategy presented here aims to reduce those errors considerably. This paper also presents a proof-of-principle design and program to experimentally evaluate that concept.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-WEPWI053

Export •

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