Fabrication and test of model superconducting inflector for g-2 at FNAL

Krave, Steven; Kashikhin, Vladimir S.; Strauss, Thomas

doi:10.1109/TASC.2017.2672755

Title: Fabrication and test of model superconducting inflector for g-2 at FNAL

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Abstract

The new FNAL g-2 experiment is based on the muon storage ring previously used at BNL. The 1.45 T dipole magnetic field in the storage ring is required to have very high (1 ppm) homogeneity. The muon beam injected into the ring must be transported through the magnet yoke and the main superconducting coil cryostat with minimal distortions. The old inflector magnet shielded the main dipole fringe field inside the muon transport beam pipe, with an outer NbTi superconducting screen, and did not disturb the field in the area of circulating beam. Nevertheless, this magnet had coils with closed ends in which a large fraction of muon beam particles were lost. A new magnet is envisioned utilizing the same cross section as the original with open ends for improved beam transport. A model magnet has been wound utilizing 3d printed parts to verify the magnetic behavior of the magnet at room temperature and validate winding of the complicated geometry required for the magnet ends. Finally, room temperature magnetic measurements have been performed and confirm the magnetic design

Authors:

Krave, Steven ^[1]; Kashikhin, Vladimir S. ^[1]; Strauss, Thomas ^[1]

Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Publication Date:: Wed Mar 01 00:00:00 EST 2017

Research Org.:: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

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

OSTI Identifier:: 1346821

Report Number(s):: FERMILAB-CONF-16-335-TD
Journal ID: ISSN 1051-8223; 1517368; TRN: US1700659

Grant/Contract Number:: AC02-07CH11359

Resource Type:: Accepted Manuscript

Journal Name:: IEEE Transactions on Applied Superconductivity

Additional Journal Information:: Journal Volume: 27; Journal Issue: 4; Journal ID: ISSN 1051-8223

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

Country of Publication:: United States

Language:: English

Subject:: 43 PARTICLE ACCELERATORS; superconducting magnet; accelerator; dipole magnet; septum

Citation Formats


                    Krave, Steven, Kashikhin, Vladimir S., and Strauss, Thomas. Fabrication and test of model superconducting inflector for g-2 at FNAL.  United States: N. p., 2017. 
Web.  doi:10.1109/TASC.2017.2672755.

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                    Krave, Steven, Kashikhin, Vladimir S., & Strauss, Thomas. Fabrication and test of model superconducting inflector for g-2 at FNAL.  United States.  https://doi.org/10.1109/TASC.2017.2672755

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                    Krave, Steven, Kashikhin, Vladimir S., and Strauss, Thomas. Wed .  
"Fabrication and test of model superconducting inflector for g-2 at FNAL".  United States.  https://doi.org/10.1109/TASC.2017.2672755.  https://www.osti.gov/servlets/purl/1346821.

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@article{osti_1346821,

  title        = {Fabrication and test of model superconducting inflector for g-2 at FNAL},

  author       = {Krave, Steven and Kashikhin, Vladimir S. and Strauss, Thomas},

  abstractNote = {The new FNAL g-2 experiment is based on the muon storage ring previously used at BNL. The 1.45 T dipole magnetic field in the storage ring is required to have very high (1 ppm) homogeneity. The muon beam injected into the ring must be transported through the magnet yoke and the main superconducting coil cryostat with minimal distortions. The old inflector magnet shielded the main dipole fringe field inside the muon transport beam pipe, with an outer NbTi superconducting screen, and did not disturb the field in the area of circulating beam. Nevertheless, this magnet had coils with closed ends in which a large fraction of muon beam particles were lost. A new magnet is envisioned utilizing the same cross section as the original with open ends for improved beam transport. A model magnet has been wound utilizing 3d printed parts to verify the magnetic behavior of the magnet at room temperature and validate winding of the complicated geometry required for the magnet ends. Finally, room temperature magnetic measurements have been performed and confirm the magnetic design},

  doi          = {10.1109/TASC.2017.2672755},

  journal      = {IEEE Transactions on Applied Superconductivity},

  number       = 4,

  volume       = 27,

  place        = {United States},

  year         = {Wed Mar 01 00:00:00 EST 2017},

  month        = {Wed Mar 01 00:00:00 EST 2017}

}

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