Design Considerations of a Power Supply System for Fast Cycling Superconducting Accelerator Magnets of 2 Tesla B-Field Generated by a Conductor of 100 kA Current

Hays, S.; Piekarz, H.; Pfeffer, H.; Claypool, Brad

doi:10.1109/tasc.2008.920812

Cited by 5 publications

(6 citation statements)

References 4 publications

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“…One may observe that smaller machines, such as the Booster at Fermilab or the PS at CERN (both need to be replaced due to old age), would greatly benefit from the new fast-cycling superconducting magnet technology. In this paper we describe magnetic and conductor designs while the matching power supply and current leads designs are presented in [3] and [4].…”

Section: Motivationmentioning

confidence: 99%

Design Considerations for Fast-Cycling Superconducting Accelerator Magnets of 2 T B-Field Generated by a Transmission Line Conductor of up to 100 kA Current

Piekarz

Hays

Huang

et al. 2008

IEEE Trans. Appl. Supercond.

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Abstract-Recently proposed synchrotrons, SF-SPS at CERN and DSF-MR at Fermilab, would operate with a 0.5 Hz cycle (or 2 second time period) while accelerating protons to 480 GeV. We examine possibilities of superconducting magnet technology that would allow for an accelerator quality magnetic field sweep of 2 T/s. For superconducting magnets the cryogenic cooling power demand due to AC losses in the superconductor leads to a high operational cost. We outline a novel magnet technology based on HTS superconductors that may allow to reduce AC losses in the magnet coil possibly up to an order of magnitude as compared to similar applications based on LTS type superconductors.

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Section: Motivationmentioning

confidence: 99%

Design Considerations for Fast-Cycling Superconducting Accelerator Magnets of 2 T B-Field Generated by a Transmission Line Conductor of up to 100 kA Current

Piekarz

Hays

Huang

et al. 2008

IEEE Trans. Appl. Supercond.

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“…The DSFMR ring will accelerate both batches up to 480 GeV, and then extract them into one or two neutrino beam production lines, as desired. Some technical details of the main arc magnet, current leads and power supply designs were presented in [11,12,13]. Using the Main Ring tunnel for the DSFMR allows re-use the existing Tevatron infrastructure (power distribution, cryogenic support, etc.)…”

Section: A Overview Of the Dsf-mr Accelerator Conceptmentioning

confidence: 99%

“…Following the successful development of the VLHC low-field magnet a design effort was initiated for a superconducting transmission line that would be suitable for the fast ramping/fast-cycling magnets. Some preliminary studies of 2 Tesla magnets operating with a 2 T/s ramp rate [11], including the associated power supply [12] and the current leads [13] were recently presented at the MT-20 Conference. It was estimated in [11] that the cryogenic power losses associated with 2 T/s B-field ramping speed would not exceed some 4 kW for an accelerator of 7 km circumference (e.g.…”

Section: Magnet and Power Supply Randd Cost Estimate Timelinementioning

confidence: 99%

Fast-cycling superconducting synchrotrons and possible path to the future of US experimental high-energy particle physics

Piekarz¹

2008

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We outline primary physics motivation, present proposed new arrangement for Fermilab accelerator complex, and then discuss possible long-range application of fast-cycling superconducting synchrotrons at Fermilab. MotivationDuring the past decade developments in the neutrino physics combined with progress in the cosmological models of dark matter and dark energy suggest that neutrinos play a very fundamental role in our universe. It has been determined through solar, atmospheric, reactor and accelerator experiments that neutrinos change flavor (oscillate) while passing through matter. This implies that at least two neutrino species have a non-zero mass [1], thus being in a striking contradiction to the Standard Model (SM), and therefore suggesting existence of the physics Beyond the Standard Model (BSM). In addition, the possibility of neutrinos having a small mass may provide a bridge (via e.g. a see-saw mechanism) to the GUT theories including the origin of mass in the universe. As a consequence of this new situation a need for the resolution to the neutrino physics has risen to a level that is not just complimentary to other high-energy particle physics programs but turns out to be absolutely necessary to further the understanding of the microscopic structure and workings of the universe.In neutrino physics phenomenology neutrinos with physical flavors, ν α (α = e, μ, τ), are assumed to be linear super-positions, through a unitarity matrix, of neutrino fields with definitive masses ν i (i = 1, 2, 3). A common parameterization for this matrix uses mixing angles, θ ij = (0, 2π) typically represented by sin 2 θ ij , and a CP-violating phase δ CP = (0, 2π). The current neutrino phenomenology also implies that two of the neutrino species have relatively close masses while the mass of the third one is either much heavier (normal hierarchy) or much lighter (inverted hierarchy) of the "doublet". The lightest (heaviest) neutrino in the doublet is called ν 1 (ν 2 ) and their squared mass difference is defined as δm 2 = m -m > 0. The mass difference between m 3 and m 1,2 doublet is defined as ∆m 2 = |m

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“…This new magnet concept is briefly described in [12], and a more detailed design of this magnet system will be presented at MT-20 Conference [13,14,15]. The magnet uses laminated, Fe3%Si, core to form the magnetic field.…”

Section: Main Arc Magnet For the Dsf-mr Acceleratormentioning

confidence: 99%

Preliminary consideration of a double, 480 GeV, fast cycling proton accelerator for production of neutrino beams at Fermilab

Piekarz¹,

Hays²

2007

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We propose to build the DSF-MR (Double Super-Ferric Main Ring), 480 GeV, fast-cycling (2 second repetition rate) two-beam proton accelerator in the Main Ring tunnel of Fermilab. This accelerator design is based on the super-ferric magnet technology developed for the VLHC, and extended recently to the proposed LER injector for the LHC and fast cycling SF-SPS at CERN. The DSF-MR accelerator system will constitute the final stage of the proton source enabling production of two neutrino beams separated by 2 second time period. These beams will be sent alternately to two detectors located at ~ 3000 km and ~ 7500 km away from Fermilab. It is expected that combination of the results from these experiments will offer more than 3 order of magnitudes increased sensitivity for detection and measurement of neutrino oscillations with respect to expectations in any current experiment, and thus may truly enable opening the window into the physics beyond the Standard Model. We examine potential sites for the long baseline neutrino detectors accepting beams from Fermilab. The current injection system consisting of 400 MeV Linac, 8 GeV Booster and the Main Injector can be used to accelerate protons to 45 GeV before transferring them to the DSF-MR. The implementation of the DSF-MR will allow for an 8-fold increase in beam power on the neutrino production target. In this note we outline the proposed new arrangement of the Fermilab accelerator complex. We also briefly describe the DSF-MR magnet design and its power supply, and discuss necessary upgrade of the Tevatron RF system for the use with the DSF-MR accelerator. Finally, we outline the required R&D, cost estimate and possible timeline for the implementation of the DSF-MR accelerator. MotivationThe expected startup of the LHC in the late 2007 brings the Tevatron collider physics program to a close by 2009. The ILC with its primary motivation to investigate the Higgs bosons of the Standard Model must wait for the LHC to discover the Higgs, or the very least to determine its most probable mass range, so the required energy reach can become a firm parameter in the ILC accelerator design and cost estimate. The current Higgs mass limit from CDF and D0 experiments [1] at Fermilab is already at the fringes of the Standard Model expectations for a connection all the way up to the Max Planck scale. The highest allowed mass scale for the Higgs boson (or some other electroweak symmetry breaking mechanism), however, is around 0.8 TeV. At this mass range the Standard Model becomes inconsistent, and as expected by most theorists, the new physics will likely emerge at the order of TeV mass scale.

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Design Considerations of a Power Supply System for Fast Cycling Superconducting Accelerator Magnets of 2 Tesla B-Field Generated by a Conductor of 100 kA Current

Cited by 5 publications

References 4 publications

Design Considerations for Fast-Cycling Superconducting Accelerator Magnets of 2 T B-Field Generated by a Transmission Line Conductor of up to 100 kA Current

Design Considerations for Fast-Cycling Superconducting Accelerator Magnets of 2 T B-Field Generated by a Transmission Line Conductor of up to 100 kA Current

Fast-cycling superconducting synchrotrons and possible path to the future of US experimental high-energy particle physics

Preliminary consideration of a double, 480 GeV, fast cycling proton accelerator for production of neutrino beams at Fermilab

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