Field Quality Measurement of a 4.2-m-Long Prototype Low- $\beta$ Nb $_3$ Sn Quadrupole Magnet During the Assembly Stage for the High-Luminosity LHC Accelerator Upgrade Project

Wang, Xiaorong; Ambrosio, Giorgio F.; Cheng, Daniel W.; Chlachidze, Guram; DiMarco, Joseph; Ghiorso, William; Hernikl, Christopher; Lipton, Thomas M.; Myers, Scott; Pan, Heng; Prestemon, Soren O.; Sabbi, GianLuca

doi:10.1109/TASC.2019.2892119

Title: Field Quality Measurement of a 4.2-m-Long Prototype Low- $$\beta$$ Nb $$_3$$ Sn Quadrupole Magnet During the Assembly Stage for the High-Luminosity LHC Accelerator Upgrade Project

Full Record
Other Related Research

Abstract

The U.S. High-Luminosity LHC Accelerator Upgrade Project, in collaboration with CERN, is developing Nb$$_3$$Sn quadrupole magnets (MQXFA) to be installed at the interaction region of the LHC. The project will deliver 20 MQXFA magnets in 10 cold masses. These magnets need to meet the stringent requirements on field quality at the nominal operating current. Compared to the mature NbTi accelerator magnet technology, achieving excellent field quality can be challenging for Nb$$_3$$Sn magnets. To help track, understand, and allow effective correction of geometric field errors, field quality measurements at room temperature during the MQXFA assembly stage was planned for the project. The measurements also intend to evaluate the magnetic axis and twist angle along the magnet aperture. We report the first measurement on a prototype MQXFA magnet using a recently developed measurement system. The magnetic axis and twist angle met the acceptance criteria. Further development needs for the room-temperature measurements were discussed. We expect that statistics obtained from such measurements throughout the project will provide insight into future applications of high-performance Nb$$_3$$Sn accelerator magnets.

Authors:

^[1]; Ambrosio, Giorgio F. ^[2];

^[1];

^[2];

^[2]; Ghiorso, William ^[1]; Hernikl, Christopher ^[1]; Lipton, Thomas M. ^[1]; Myers, Scott ^[1];

^[1];

^[1]

Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Publication Date:: Fri Jan 18 00:00:00 EST 2019

Research Org.:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP)

OSTI Identifier:: 1497669

Alternate Identifier(s):: OSTI ID: 1498556

Report Number(s):: FERMILAB-PUB-19-058-TD
Journal ID: ISSN 1051-8223; ark:/13030/qt6fb9v14s

Grant/Contract Number:: AC02-05CH11231; AC02-07CH11359

Resource Type:: Accepted Manuscript

Journal Name:: IEEE Transactions on Applied Superconductivity

Additional Journal Information:: Journal Volume: 29; Journal Issue: 5; Journal ID: ISSN 1051-8223

Publisher:: Institute of Electrical and Electronics Engineers (IEEE)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Nb $_3$ Sn accelerator magnets; field quality; High-Luminosity LHC Upgrade Project; 43 PARTICLE ACCELERATORS

Citation Formats


                    Wang, Xiaorong, Ambrosio, Giorgio F., Cheng, Daniel W., Chlachidze, Guram, DiMarco, Joseph, Ghiorso, William, Hernikl, Christopher, Lipton, Thomas M., Myers, Scott, Pan, Heng, Prestemon, Soren O., and Sabbi, GianLuca. Field Quality Measurement of a 4.2-m-Long Prototype Low- $\beta$ Nb $_3$ Sn Quadrupole Magnet During the Assembly Stage for the High-Luminosity LHC Accelerator Upgrade Project.  United States: N. p., 2019. 
Web.  doi:10.1109/TASC.2019.2892119.

Copy to clipboard


                    Wang, Xiaorong, Ambrosio, Giorgio F., Cheng, Daniel W., Chlachidze, Guram, DiMarco, Joseph, Ghiorso, William, Hernikl, Christopher, Lipton, Thomas M., Myers, Scott, Pan, Heng, Prestemon, Soren O., & Sabbi, GianLuca. Field Quality Measurement of a 4.2-m-Long Prototype Low- $\beta$ Nb $_3$ Sn Quadrupole Magnet During the Assembly Stage for the High-Luminosity LHC Accelerator Upgrade Project.  United States.  https://doi.org/10.1109/TASC.2019.2892119

Copy to clipboard


                    Wang, Xiaorong, Ambrosio, Giorgio F., Cheng, Daniel W., Chlachidze, Guram, DiMarco, Joseph, Ghiorso, William, Hernikl, Christopher, Lipton, Thomas M., Myers, Scott, Pan, Heng, Prestemon, Soren O., and Sabbi, GianLuca. Fri .  
"Field Quality Measurement of a 4.2-m-Long Prototype Low- $\beta$ Nb $_3$ Sn Quadrupole Magnet During the Assembly Stage for the High-Luminosity LHC Accelerator Upgrade Project".  United States.  https://doi.org/10.1109/TASC.2019.2892119.  https://www.osti.gov/servlets/purl/1497669.

Copy to clipboard


                    
@article{osti_1497669,

  title        = {Field Quality Measurement of a 4.2-m-Long Prototype Low- $\beta$ Nb $_3$ Sn Quadrupole Magnet During the Assembly Stage for the High-Luminosity LHC Accelerator Upgrade Project},

  author       = {Wang, Xiaorong and Ambrosio, Giorgio F. and Cheng, Daniel W. and Chlachidze, Guram and DiMarco, Joseph and Ghiorso, William and Hernikl, Christopher and Lipton, Thomas M. and Myers, Scott and Pan, Heng and Prestemon, Soren O. and Sabbi, GianLuca},

  abstractNote = {The U.S. High-Luminosity LHC Accelerator Upgrade Project, in collaboration with CERN, is developing Nb$_3$Sn quadrupole magnets (MQXFA) to be installed at the interaction region of the LHC. The project will deliver 20 MQXFA magnets in 10 cold masses. These magnets need to meet the stringent requirements on field quality at the nominal operating current. Compared to the mature NbTi accelerator magnet technology, achieving excellent field quality can be challenging for Nb$_3$Sn magnets. To help track, understand, and allow effective correction of geometric field errors, field quality measurements at room temperature during the MQXFA assembly stage was planned for the project. The measurements also intend to evaluate the magnetic axis and twist angle along the magnet aperture. We report the first measurement on a prototype MQXFA magnet using a recently developed measurement system. The magnetic axis and twist angle met the acceptance criteria. Further development needs for the room-temperature measurements were discussed. We expect that statistics obtained from such measurements throughout the project will provide insight into future applications of high-performance Nb$_3$Sn accelerator magnets.},

  doi          = {10.1109/TASC.2019.2892119},

  journal      = {IEEE Transactions on Applied Superconductivity},

  number       = 5,

  volume       = 29,

  place        = {United States},

  year         = {Fri Jan 18 00:00:00 EST 2019},

  month        = {Fri Jan 18 00:00:00 EST 2019}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (DOE)

Publisher's Version of Record

https://doi.org/10.1109/TASC.2019.2892119

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 3 works

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE PAGES and OSTI.GOV collections:

Quench Protection Studies for the High Luminosity LHC Nb$$_3$$Sn Quadrupole Magnets

Journal Article Ravaioli, Emmanuele ; Ambrosio, Giorgio ; Bajas, Hugues ; ... - IEEE Transactions on Applied Superconductivity

Achieving the targets of the High Luminosity LHC project requires the installation of new inner triplet magnet circuits for the final focusing of the particle beams on each side of the two main interaction points. Each of the four circuits will include six 150 mm aperture, 132.2 T/m gradient, Nbmore »« less
https://doi.org/10.1109/TASC.2021.3055160
The P(⁴S) + NH(³Σ^–) and N(⁴S) + PH(³Σ^–)reactions as sources of interstellar phosphorus nitride

Journal Article Gomes, Alexandre R. ; Souza, André C. ; Jasper, Ahren W. ; ... - Publications of the Astronomical Society of Australia

Phosphorus nitride (PN) is believed to be one of the major reservoirs of phosphorus in the interstellar medium (ISM). For this reason, understanding which reactions produce PN in space and predicting their rate coefficients is important for modelling the relative abundances of P-bearing species and clarifying the role of phosphorus in astrochemistry. Here, in this work, we explore the potential energy surfaces of themore »« less
https://doi.org/10.1017/pasa.2023.13

Full Text Available
Fast-ion transport in quasisymmetric equilibria in the presence of a resonant Alfvénic perturbation

Journal Article Paul, Elizabeth J. ; Mynick, Harry E. ; Bhattacharjee, Amitava - Journal of Plasma Physics

Significant progress has been made in designing magnetic fields that provide excellent confinement of the guiding-centre trajectories of alpha particles using quasisymmetry (QS). Given the reduction in this transport channel, we assess the impact of resonant Alfvén eigenmodes (AEs) on the guiding-centre motion. The AE amplitudes are chosen to be consistent with experimental measurements and large-scale simulations. We evaluate the drift resonance condition, phase-space island width and island overlap criterion for quasisymmetric configurations. Kinetic Poincaré plots elucidate features of the transport, including stiff transport above a critical perturbation amplitude. Our analysis highlights key departures from the AE-driven transport in tokamaks, such as the avoidance of phase-space island overlap in quasihelical configurations and the enhanced transport due to wide phase-space islands in low magnetic shear configurations. In configurations that are closer to QS, with QS deviationsmore »« less
https://doi.org/10.1017/S0022377823001095
Isotope physics of heat and particle transport with tritium in JET-ILW type-I ELMy H-mode plasmas

Journal Article Schneider, Philip A. ; Angioni, C. ; Auriemma, F. ; ... - Nuclear Fusion

As part the DTE2 campaign in the JET tokamak, we conducted a parameter scan in T and D-T complementing existing pulses in H and D. For the different main ion masses, type-I ELMy H-modes at fixed plasma current and magnetic field can have the pedestal pressure varying by a factor of 4 and the total pressure changing from β N = 1.0 to 3.0. We investigated the pedestal and core isotope mass dependencies using this extensive data set. The pedestal shows a strongmore »« less
https://doi.org/10.1088/1741-4326/acf560

Full Text Available
Proximity-enhanced valley Zeeman splitting at the WS₂/graphene interface

Journal Article Faria Junior, Paulo E. ; Naimer, Thomas ; McCreary, Kathleen M. ; ... - 2D Materials

The valley Zeeman physics of excitons in monolayer transition metal dichalcogenides provides valuable insight into the spin and orbital degrees of freedom inherent to these materials. Being atomically-thin materials, these degrees of freedom can be influenced by the presence of adjacent layers, due to proximity interactions that arise from wave function overlap across the 2D interface. Here, we report 60 T magnetoreflection spectroscopy of the A- and B- excitons in monolayer WS₂, systematically encapsulated in monolayer graphene. While the observed variations of the valley Zeeman effect for the A- exciton are qualitatively in accord with expectations from the bandgap reductionmore »« less
https://doi.org/10.1088/2053-1583/acd5df

Full Text Available

Similar Records