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Title: Fabrication of First 4-m Coils for the LARP MQXFA Quadrupole and Assembly in Mirror Structure

Abstract

The US LHC Accelerator Research Program is constructing prototype interaction region quadrupoles as part of the US in-kind contribution to the Hi-Lumi LHC project. The low-beta MQXFA Q1/Q3 coils have a 4-m length and a 150 mm bore. The design is first validated on short, one meter models (MQXFS) developed as part of the longstanding Nb3Sn quadrupole R&D by LARP in collaboration with CERN. In parallel, facilities and tooling are being developed and refined at BNL, LBNL, and FNAL to enable long coil production, assembly, and cold testing. Long length scale-up is based on the experience from the LARP 90 mm aperture (TQ-LQ) and 120 mm aperture (HQ and Long HQ) programs. A 4-m long MQXF practice coil was fabricated, water jet cut and analyzed to verify procedures, parts, and tooling. In parallel, the first complete prototype coil (QXFP01a) was fabricated and assembled in a long magnetic mirror, MQXFPM1, to provide early feedback on coil design and fabrication following the successful experience of previous LARP mirror tests.

Authors:
 [1];  [2];  [3];  [2];  [4];  [5];  [5];  [4];  [3];  [4];  [2];  [2];  [4];  [5];  [5];  [2];  [3];  [3];  [5];  [2]
  1. Angelo State Univ., San Angelo, TX (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  2. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States)
  4. European Organization for Nuclear Research (CERN), Geneva (Switzerland)
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1343958
Report Number(s):
FERMILAB-PUB-16-346-TD
Journal ID: ISSN 1051-8223; 1512843
Grant/Contract Number:
AC02-07CH11359
Resource Type:
Journal Article: 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

Citation Formats

Holik, Eddie Frank, Ambrosio, Giorgio, Anerella, Michael, Bossert, Rodger, Cavanna, Eugenio, Cheng, Daniel, Dietderich, Daniel R., Ferracin, Paolo, Ghosh, Arup K., Izquierdo Bermudez, Susana, Krave, Steven, Nobrega, Alfred, Perez, Juan Carlos, Pong, Ian, Sabbi, GianLuca, Santini, Carlo, Schmalzle, Jesse, Wanderer, Peter, Wang, Xiaorong, and Yu, Miao. Fabrication of First 4-m Coils for the LARP MQXFA Quadrupole and Assembly in Mirror Structure. United States: N. p., 2017. Web. doi:10.1109/TASC.2017.2656155.
Holik, Eddie Frank, Ambrosio, Giorgio, Anerella, Michael, Bossert, Rodger, Cavanna, Eugenio, Cheng, Daniel, Dietderich, Daniel R., Ferracin, Paolo, Ghosh, Arup K., Izquierdo Bermudez, Susana, Krave, Steven, Nobrega, Alfred, Perez, Juan Carlos, Pong, Ian, Sabbi, GianLuca, Santini, Carlo, Schmalzle, Jesse, Wanderer, Peter, Wang, Xiaorong, & Yu, Miao. Fabrication of First 4-m Coils for the LARP MQXFA Quadrupole and Assembly in Mirror Structure. United States. doi:10.1109/TASC.2017.2656155.
Holik, Eddie Frank, Ambrosio, Giorgio, Anerella, Michael, Bossert, Rodger, Cavanna, Eugenio, Cheng, Daniel, Dietderich, Daniel R., Ferracin, Paolo, Ghosh, Arup K., Izquierdo Bermudez, Susana, Krave, Steven, Nobrega, Alfred, Perez, Juan Carlos, Pong, Ian, Sabbi, GianLuca, Santini, Carlo, Schmalzle, Jesse, Wanderer, Peter, Wang, Xiaorong, and Yu, Miao. Mon . "Fabrication of First 4-m Coils for the LARP MQXFA Quadrupole and Assembly in Mirror Structure". United States. doi:10.1109/TASC.2017.2656155. https://www.osti.gov/servlets/purl/1343958.
@article{osti_1343958,
title = {Fabrication of First 4-m Coils for the LARP MQXFA Quadrupole and Assembly in Mirror Structure},
author = {Holik, Eddie Frank and Ambrosio, Giorgio and Anerella, Michael and Bossert, Rodger and Cavanna, Eugenio and Cheng, Daniel and Dietderich, Daniel R. and Ferracin, Paolo and Ghosh, Arup K. and Izquierdo Bermudez, Susana and Krave, Steven and Nobrega, Alfred and Perez, Juan Carlos and Pong, Ian and Sabbi, GianLuca and Santini, Carlo and Schmalzle, Jesse and Wanderer, Peter and Wang, Xiaorong and Yu, Miao},
abstractNote = {The US LHC Accelerator Research Program is constructing prototype interaction region quadrupoles as part of the US in-kind contribution to the Hi-Lumi LHC project. The low-beta MQXFA Q1/Q3 coils have a 4-m length and a 150 mm bore. The design is first validated on short, one meter models (MQXFS) developed as part of the longstanding Nb3Sn quadrupole R&D by LARP in collaboration with CERN. In parallel, facilities and tooling are being developed and refined at BNL, LBNL, and FNAL to enable long coil production, assembly, and cold testing. Long length scale-up is based on the experience from the LARP 90 mm aperture (TQ-LQ) and 120 mm aperture (HQ and Long HQ) programs. A 4-m long MQXF practice coil was fabricated, water jet cut and analyzed to verify procedures, parts, and tooling. In parallel, the first complete prototype coil (QXFP01a) was fabricated and assembled in a long magnetic mirror, MQXFPM1, to provide early feedback on coil design and fabrication following the successful experience of previous LARP mirror tests.},
doi = {10.1109/TASC.2017.2656155},
journal = {IEEE Transactions on Applied Superconductivity},
number = 4,
volume = 27,
place = {United States},
year = {Mon Jan 23 00:00:00 EST 2017},
month = {Mon Jan 23 00:00:00 EST 2017}
}

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  • The 3.7 m long quadrupole magnet LQS01 represents a major step of the US LHC Accelerator Research Program (LARP) towards the development of long Nb{sub 3}Sn accelerator quadrupole magnets for a LHC Luminosity upgrade. The magnet support structure is a scale up of the 1 m long Technology Quadrupole TQS design with some modifications suggested by TQS model test results. It includes an aluminum shell pre-tensioned over iron yokes using pressurized bladders and locking keys (bladder and key technology). The axial support is provided by two stainless steel end plates compressed against the coil ends by four stainless steel rods.more » The structure, instrumented with strain gauges, has been fabricated and assembled around four aluminum 'dummy coils' to determine pre-load homogeneity and mechanical characteristics during cool-down. After presenting the main magnetic and mechanical parameters of LQS01, we report in this paper on the design, assembly, and test of the support structure, with a comparison between strain gauges data and 3D finite element model results.« less
  • The U.S. LHC Accelerator Research Program (LARP) has started the fabrication of 3.7-m long Nb{sub 3}Sn quadrupole models. The Long Quadrupoles (LQ) are 'Proof-of-Principle' magnets which are to demonstrate that Nb{sub 3}Sn technology is mature for use in high energy particle accelerators. Their design is based on the LARP Technological Quadrupole (TQ) models, developed at FNAL and LBNL, which have design gradients higher than 200 T/m and an aperture of 90 mm. The plans for the LQ R&D and a design update are presented and discussed in this paper. The challenges of fabricating long accelerator-quality Nb{sub 3}Sn coils are presentedmore » together with the solutions adopted for the LQ coils (based on the TQ experience). During the fabrication and inspection of practice coils some problems were found and corrected. The fabrication at BNL and FNAL of the set of coils for the first Long Quadrupole is in progress.« less