Mu2e Transport Solenoid Cold-Mass Alignment Issues

Lopes, M.; Ambrosio, G.; Badgley, K.; Bradascio, F.; Brandt, J.; Evbota, D.; Hocker, A.; Lamm, M.; Lombardo, V.; Miller, J.; Nicol, T.; Kutschke, R.; Vellidis, C.; Wands, R.; Wenk, E.

doi:10.1109/TASC.2016.2642641

Title: Mu2e Transport Solenoid Cold-Mass Alignment Issues

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Abstract

The Muon-to-electron conversion experiment (Mu2e) at Fermilab is designed to explore charged lepton flavor violation. It is composed of three large superconducting solenoids: the Production Solenoid (PS), the Transport Solenoid (TS) and the Detector Solenoid (DS). The TS is formed by two magnets: TS upstream (TSu) and downstream (TSd). Each has its own cryostat and power supply. Tolerance sensitivity studies of the position and angular alignment of each coil in this magnet system were performed in the past with the objective to demonstrate that the magnet design meets all the field requirements. Furthermore, the alignment of the cold-masses is critical to maximize the transmission of muons and to avoid possible backgrounds that would reduce the sensitivity of the experiment. Each TS magnet cold-mass can be individually aligned. Here, we discuss implications of the alignment of the TS cold-masses in terms of the displacement of the magnetic center. Consideration of the practical mechanical limits are also presented.

Authors:

Lopes, M. ^[1]; Ambrosio, G. ^[1]; Badgley, K. ^[1]; Bradascio, F. ^[1]; Brandt, J. ^[1]; Evbota, D. ^[1]; Hocker, A. ^[1]; Lamm, M. ^[1]; Lombardo, V. ^[1]; Miller, J. ^[2]; Nicol, T. ^[1]; Kutschke, R. ^[1]; Vellidis, C. ^[1]; Wands, R. ^[1]; Wenk, E. ^[1]

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

Publication Date:: Thu Jan 05 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)

Contributing Org.:: Mu2e Collaboration

OSTI Identifier:: 1339110

Report Number(s):: FERMILAB-PUB-16-327-E-TD
Journal ID: ISSN 1051-8223; 1508567; TRN: US1701031

Grant/Contract Number:: AC02-07CH11359

Resource Type:: Accepted Manuscript

Journal Name:: IEEE Transactions on Applied Superconductivity

Additional Journal Information:: Journal Volume: PP; Journal Issue: 99; Journal ID: ISSN 1051-8223

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

Country of Publication:: United States

Language:: English

Subject:: 43 PARTICLE ACCELERATORS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; electromagnets; electromagnetic analysis; solenoids; superconducting magnets

Citation Formats


                    Lopes, M., Ambrosio, G., Badgley, K., Bradascio, F., Brandt, J., Evbota, D., Hocker, A., Lamm, M., Lombardo, V., Miller, J., Nicol, T., Kutschke, R., Vellidis, C., Wands, R., and Wenk, E. Mu2e Transport Solenoid Cold-Mass Alignment Issues.  United States: N. p., 2017. 
Web.  doi:10.1109/TASC.2016.2642641.

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                    Lopes, M., Ambrosio, G., Badgley, K., Bradascio, F., Brandt, J., Evbota, D., Hocker, A., Lamm, M., Lombardo, V., Miller, J., Nicol, T., Kutschke, R., Vellidis, C., Wands, R., & Wenk, E. Mu2e Transport Solenoid Cold-Mass Alignment Issues.  United States.  https://doi.org/10.1109/TASC.2016.2642641

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                    Lopes, M., Ambrosio, G., Badgley, K., Bradascio, F., Brandt, J., Evbota, D., Hocker, A., Lamm, M., Lombardo, V., Miller, J., Nicol, T., Kutschke, R., Vellidis, C., Wands, R., and Wenk, E. Thu .  
"Mu2e Transport Solenoid Cold-Mass Alignment Issues".  United States.  https://doi.org/10.1109/TASC.2016.2642641.  https://www.osti.gov/servlets/purl/1339110.

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@article{osti_1339110,

  title        = {Mu2e Transport Solenoid Cold-Mass Alignment Issues},

  author       = {Lopes, M. and Ambrosio, G. and Badgley, K. and Bradascio, F. and Brandt, J. and Evbota, D. and Hocker, A. and Lamm, M. and Lombardo, V. and Miller, J. and Nicol, T. and Kutschke, R. and Vellidis, C. and Wands, R. and Wenk, E.},

  abstractNote = {The Muon-to-electron conversion experiment (Mu2e) at Fermilab is designed to explore charged lepton flavor violation. It is composed of three large superconducting solenoids: the Production Solenoid (PS), the Transport Solenoid (TS) and the Detector Solenoid (DS). The TS is formed by two magnets: TS upstream (TSu) and downstream (TSd). Each has its own cryostat and power supply. Tolerance sensitivity studies of the position and angular alignment of each coil in this magnet system were performed in the past with the objective to demonstrate that the magnet design meets all the field requirements. Furthermore, the alignment of the cold-masses is critical to maximize the transmission of muons and to avoid possible backgrounds that would reduce the sensitivity of the experiment. Each TS magnet cold-mass can be individually aligned. Here, we discuss implications of the alignment of the TS cold-masses in terms of the displacement of the magnetic center. Consideration of the practical mechanical limits are also presented.},

  doi          = {10.1109/TASC.2016.2642641},

  journal      = {IEEE Transactions on Applied Superconductivity},

  number       = 99,

  volume       = PP,

  place        = {United States},

  year         = {Thu Jan 05 00:00:00 EST 2017},

  month        = {Thu Jan 05 00:00:00 EST 2017}

}

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