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  1. AU="Anerella, M."
  2. AU="Bayliss, Richard"
  3. AU="González-Enseñat, Maria Antònia"
  4. AU=Camara Amadou K S
  5. AU="Luginbuehl, Helena"
  6. AU="Irani, Zubin A"
  7. AU="Santos, H"
  8. AU="Villota-Rivas, Marcela"
  9. AU="Sepe, Thomas"
  10. AU="Prasad, Aman"
  11. AU="Bortz, Cole"
  12. AU="Clarke, Julia R"
  13. AU=Jordan William D Jr
  14. AU="Frangaj, Brulinda"
  15. AU="Oostindjer, Andrew"
  16. AU="Diarra, Zoumana"
  17. AU="Saragoni, V G"

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  1. Buch ; Online: Conceptual design of 20 T hybrid accelerator dipole magnets

    Ferracin, P. / Ambrosio, G. / Anerella, M. / Arbelaez, D. / Brouwer, L. / Barzi, E. / Cooley, L. / Cozzolino, J. / Fajardo, L. Garcia / Gupta, R. / Juchno, M. / Kashikhin, V. V. / Kurian, F. / Marinozzi, V. / Novitski, I. / Rochepault, E. / Stern, J. / Vallone, G. / Yahia, B. /
    Zlobin, A. V.

    2023  

    Abstract: Hybrid magnets are currently under consideration as an economically viable option towards 20 T dipole magnets for next generation of particle accelerators. In these magnets, High Temperature Superconducting (HTS) materials are used in the high field part ...

    Abstract Hybrid magnets are currently under consideration as an economically viable option towards 20 T dipole magnets for next generation of particle accelerators. In these magnets, High Temperature Superconducting (HTS) materials are used in the high field part of the coil with so-called insert coils, and Low Temperature Superconductors (LTS) like Nb3Sn and Nb-Ti superconductors are used in the lower field region with so-called outsert coils. The attractiveness of the hybrid option lays on the fact that, on the one hand, the 20 T field level is beyond the Nb3Sn practical limits of 15-16 T for accelerator magnets and can be achieved only via HTS materials; on the other hand, the high cost of HTS superconductors compared to LTS superconductors makes it advantageous exploring a hybrid approach, where the HTS portion of the coil is minimized. We present in this paper an overview of different design options aimed at generating 20 T field in a 50 mm clear aperture. The coil layouts investigated include the Cos-theta design (CT), with its variations to reduce the conductor peak stress, namely the Canted Cos-theta design (CCT) and the Stress Management Cos-theta design (SMCT), and, in addition, the Block-type design (BL) including a form of stress management and the Common-Coil design (CC). Results from a magnetic and mechanical analysis are discussed, with particular focus on the comparison between the different options regarding quantity of superconducting material, field quality, conductor peak stress, and quench protection.
    Schlagwörter Physics - Accelerator Physics
    Thema/Rubrik (Code) 621
    Erscheinungsdatum 2023-02-09
    Erscheinungsland us
    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  2. Buch ; Online: Challenges and Lessons Learned from fabrication, testing and analysis of eight MQXFA Low Beta Quadrupole magnets for HL-LHC

    Ambrosio, G. / Amm, K. / Anerella, M. / Apollinari, G. / Izquierdo, G. Arnau / Baldini, M. / Ballarino, A. / Barth, C. / Yahia, A. Ben / Blowers, J. / De Sousa, P. Borges / Bossert, R. / Bulat, B. / Carcagno, R. / Cheng, D. W. / Chlachidze, G. / Cooley, L. / Crouvizier, M. / Devred, A. /
    DiMarco, J. / Feher, S. / Ferracin, P. / Troitino, J. Ferradas / Fajardo, L. Garcia / Gourlay, S. / Hocker, H. M. / Bermudez, S. Izquierdo / Joshi, P. / Krave, S. / Lee, E. M. / Levitan, J. / Lombardo, V. / Lu, J. / Marchevsky, M. / Marinozzi, V. / Moros, A. / Muratore, J. / Naus, M. / Nobrega, F. / Page, T. / Pong, I. / Perez, J. C. / Prestemon, S. / Ravaioli, E. / Ray, K. L. / Sabbi, G. / Schmalzle, J. / Seyl, J. / Sgobba, S. / Stoynev, S. / Strauss, T. / Todesco, E. / Turrioni, D. / Vallone, G. / Van Weelderen, R. / Wanderer, P. / Wang, X. / Yu, M.

    2023  

    Abstract: By the end of October 2022, the US HL-LHC Accelerator Upgrade Project (AUP) had completed fabrication of ten MQXFA magnets and tested eight of them. The MQXFA magnets are the low beta quadrupole magnets to be used in the Q1 and Q3 Inner Triplet elements ... ...

    Abstract By the end of October 2022, the US HL-LHC Accelerator Upgrade Project (AUP) had completed fabrication of ten MQXFA magnets and tested eight of them. The MQXFA magnets are the low beta quadrupole magnets to be used in the Q1 and Q3 Inner Triplet elements of the High Luminosity LHC. This AUP effort is shared by BNL, Fermilab, and LBNL, with strand verification tests at NHMFL. An important step of the AUP QA plan is the testing of MQXFA magnets in a vertical cryostat at BNL. The acceptance criteria that could be tested at BNL were all met by the first four production magnets (MQXFA03-MQXFA06). Subsequently, two magnets (MQXFA07 and MQXFA08) did not meet some criteria and were disassembled. Lessons learned during the disassembly of MQXFA07 caused a revision to the assembly specifications that were used for MQXFA10 and subsequent magnets. In this paper, we present a summary of: 1) the fabrication and test data of all the MQXFA magnets; 2) the analysis of MQXFA07/A08 test results with characterization of the limiting mechanism; 3) the outcome of the investigation, including the lessons learned during MQXFA07 disassembly; and 4) the finite element analysis correlating observations with test performance.
    Schlagwörter Physics - Accelerator Physics
    Thema/Rubrik (Code) 621
    Erscheinungsdatum 2023-01-23
    Erscheinungsland us
    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  3. Buch ; Online: MQXFA Final Design Report

    Ambrosio, Giorgio / Amm, Kathleen / Anerella, Mike / Apollinari, Giorgio / Baldini, Maria / Yahia, Anis Ben / Blowers, James / Carcagno, Ruben / Cheng, Daniel / Chlachidze, Guram / Cooley, Lance / Feher, Sandor / Ferracin, Paolo / Hocker, Henry / Bermudez, Susana Izquierdo / Joshi, Piyush / Lombardo, Vito / Marinozzi, Vittorio / Muratore, Joseph /
    Naus, Michael / Nobrega, Fred / Pan, Heng / Parker, Marcellus / Pong, Ian / Prestemon, Soren / Ravaioli, Emmanuele / Ray, Katherine L. / Sabbi, GianLuca / Schmalzle, Jesse / Todesco, Ezio / Turenne, Melanie / Yu, Miao

    2022  

    Abstract: The MQXFA Quadrupole magnets will be installed in High Luminosity LHC to form the Q1 and Q3 inner triplet optical elements in front of the interaction points 1 (ATLAS) and 5 (CMS). A pair of MQXFA units is assembled in a stainless steel helium vessel, ... ...

    Abstract The MQXFA Quadrupole magnets will be installed in High Luminosity LHC to form the Q1 and Q3 inner triplet optical elements in front of the interaction points 1 (ATLAS) and 5 (CMS). A pair of MQXFA units is assembled in a stainless steel helium vessel, including the end domes, to make the Q1 Cold Mass or the Q3 Cold Mass. The US HL LHC Accelerator Upgrade Project* is responsible for the design, manufacturing and test of the Q1/Q3 Cold Masses and the complete MQXFA magnets. CERN provides the cryostat components and is responsible for integration and installation in HL LHC. The MQXFA quadrupoles have 150 mm aperture, 4.2 m magnetic length, nominal gradient of 132.2 T/m, and coil peak field of 11.3 T. They use Nb_3Sn conductor and a support structure made of segmented aluminum shells pre-loaded by using bladders and keys. This report presents the final design of the MQXFA quadrupole magnets. *Supported by the U.S. Department of Energy, Office of Science, Office of High Energy Physics

    Comment: 120 pages
    Schlagwörter Physics - Accelerator Physics
    Thema/Rubrik (Code) 621
    Erscheinungsdatum 2022-03-13
    Erscheinungsland us
    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

    Volltext online

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    Fernleihe an ZB MED

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